7Baggers

Eton Pharmaceuticals, Inc
(NASDAQ:ETON) 

ETON stock logo

Eton Pharmaceuticals, Inc., a specialty pharmaceutical company, focuses on developing and commercializing pharmaceutical products for rare diseases. The company offers Biorphen, a phenylephrine injection for the treatment of clinically important hypotension resulting primarily from vasodilation in t...

Full Time Employees: 17
Sector: Healthcare
Industry: Biotechnology

Share this website to your friends
• Market Cap:
• Exchange:
• Shs Outstanding:
• Employees:
• Beta:
• Return on Equity (ROE) ttm:
• Return on Assets (ROA) ttm:
• EPS ttm:
• Book value per Share:
• Cash per Share:
• Current ast per Share:
• P/E ttm:
• P/E forward:
• P/E ttm high:
• P/E ttm low:
• P/S ttm:
• P/B ttm:
• P/FCF ttm:
• PEG ratio:
• Cash Ratio ttm:
• Quick Ratio ttm:
• Current Ratio ttm:
• Gross Mgn ttm:
• EBITDA Mgn ttm:
• Operating Mgn ttm:
• Net Income Mgn ttm:
• Trailing Div yield:
• Forward Div yield:
• Payout Ratio ttm:
• Ex-Dividend date:
• Target Price High:
• Target Price Low:
• Target Price Mean:
• Number of Analysts:
• Debt Ratio ttm:
• Debt to Equity ttm:
• Total Net Debt:
At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 
                                   
      revenues:
                                   
      licensing revenue
        3,286,000  500,000     5,500,000  5,000,000  5,000,000  5,000,000  2,500,000 11,500,000           
      product sales and royalties
    24,266,000 21,281,000 22,459,000 18,928,000 13,996,000 11,647,000 9,824,000 9,074,000 7,966,000 7,313,000 7,028,000 6,497,000 5,304,000 3,498,000 3,219,000 2,358,000 2,176,000 1,093,000 775,000 567,000 397,000           
      total net revenues
    24,266,000 21,281,000 22,459,000 18,928,000 17,282,000 11,647,000 10,324,000 9,074,000 7,966,000 7,313,000 7,028,000 11,997,000 5,304,000 8,498,000 3,219,000 7,358,000 2,176,000 6,093,000 775,000 3,067,000 11,897,000           
      cost of sales:
                                   
      total cost of sales
    9,531,000 8,181,000 14,604,000 7,004,000 7,421,000 5,171,000 4,022,000 3,448,000 2,959,000 3,683,000 2,625,000 2,315,000 1,958,000 2,138,000 1,201,000 2,745,000 718,000 280,000 617,000 136,000 1,590,000           
      gross profit
    14,735,000 13,100,000 7,855,000 11,924,000 9,861,000 6,476,000 6,302,000 5,626,000 5,007,000 3,630,000 4,403,000 9,682,000 3,346,000 6,360,000 2,018,000 4,613,000 1,458,000 5,813,000 158,000 2,931,000 10,307,000 -219,000 -17,000 -8,000 -3,000       
      yoy
    49.43% 102.29% 24.64% 111.94% 96.94% 78.40% 43.13% -41.89% 49.64% -42.92% 118.19% 109.89% 129.49% 9.41% 1177.22% 57.39% -85.85% -2754.34% -1029.41% -36737.50% -343666.67%           
      qoq
    12.48% 66.77% -34.12% 20.92% 52.27% 2.76% 12.02% 12.36% 37.93% -17.56% -54.52% 189.36% -47.39% 215.16% -56.25% 216.39% -74.92% 3579.11% -94.61% -71.56% -4806.39% 1188.24% 112.50% 166.67%        
      gross margin %
    Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% 2085.71% 10.56% -40.00% -3.03% NaN% NaN% NaN% NaN% NaN% NaN% 
      operating expenses:
                                   
      research and development
    1,875,000 1,780,000 1,112,000 3,712,000 1,161,000 -871,000 505,000 2,970,000 651,000 1,047,000 615,000 1,125,000 535,000 944,000 744,000 690,000 1,618,000 681,000 2,678,000 1,990,000 886,000 3,401,000 2,826,000 1,609,000 6,268,000 233,000 3,418,000 1,439,000 6,465,000 1,102,000 1,544,000 
      general and administrative
    10,446,000 8,856,000 8,106,000 9,687,000 9,170,000 6,718,000 5,288,000 5,591,000 5,156,000 4,576,000 4,336,000 4,674,000 5,345,000 4,354,000 4,169,000 5,263,000 4,927,000 3,818,000 3,327,000 3,266,000 4,058,000 3,800,000 3,429,000 2,921,000 2,610,000 2,429,000 1,624,000 1,910,000 1,589,000 1,184,000 830,000 
      total operating expenses
    12,321,000 10,636,000 9,218,000 13,399,000 10,331,000 5,847,000 5,793,000 8,561,000 5,807,000 5,623,000 4,951,000 5,799,000 5,880,000 5,298,000 4,913,000 5,953,000 6,545,000 4,499,000 6,005,000 5,256,000 4,944,000 7,201,000 6,255,000 4,530,000 8,878,000 2,662,000 5,042,000 3,349,000 8,054,000 2,286,000 2,374,000 
      income from operations
    2,414,000 2,464,000 -1,363,000 -1,475,000 -470,000 629,000 509,000 -2,935,000 -800,000 -1,993,000 -548,000 3,883,000 -2,534,000 1,062,000 -2,895,000 -1,340,000 -5,087,000 1,314,000 -5,847,000 -2,325,000 5,363,000 -7,420,000 -6,272,000 -4,538,000 -8,881,000 -2,656,000 -5,042,000 -3,349,000 -7,554,000 -2,286,000 -2,374,000 
      yoy
    -613.62% 291.73% -367.78% -49.74% -41.25% -131.56% -192.88% -175.59% -68.43% -287.66% -81.07% -389.78% -50.19% -19.18% -50.49% -42.37% -194.85% -117.71% -6.78% -48.77% -160.39% 179.37% 24.40% 35.50% 17.57% 16.19% 112.38%     
      qoq
    -2.03% -280.78% -7.59% 213.83% -174.72% 23.58% -117.34% 266.88% -59.86% 263.69% -114.11% -253.24% -338.61% -136.68% 116.04% -73.66% -487.14% -122.47% 151.48% -143.35% -172.28% 18.30% 38.21% -48.90% 234.38% -47.32% 50.55% -55.67% 230.45% -3.71%  
      operating margin %
    Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% Infinity% 70666.67% 3895.65% -22690.00% -8970.71% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% 
      other expense:
                                   
      interest and other expense
    -840,000 -666,000 -592,000 -1,044,000 -1,028,000     -70,250 -31,000 -124,000 -126,000 -152,750 -150,000 -218,000 -243,000    -247,000           
      income before income tax expense
    1,574,000 -1,493,000 -1,955,000   -824,250 501,000 -2,987,000  330,000 -579,000 4,559,000 -2,660,000 -2,483,250 -3,045,000 -1,558,000 -5,330,000   -2,016,000 5,116,000           
      income tax expense
    20,000 -69,000 -28,000 66,000 74,000 87,000 -126,000 54,000                        
      net income
    1,554,000 1,483,000 -1,927,000 -2,585,000 -1,572,000 -598,000 627,000 -3,041,000 -811,000 -2,256,000 -579,000 4,559,000 -2,660,000 912,000 -3,045,000 -1,558,000 -5,330,000 1,039,000 -6,094,000 -2,016,000 5,116,000 -7,687,000 -6,504,000 -4,730,000 -9,049,000 -2,696,000 -4,965,000 -3,249,000 -7,410,000 -3,730,000 -2,910,000 
      yoy
    -198.85% -347.99% -407.34% -15.00% 93.83% -73.49% -208.29% -166.70% -69.51% -347.37% -80.99% -392.62% -50.09% -12.22% -50.03% -22.72% -204.18% -113.52% -6.30% -57.38% -156.54% 185.13% 31.00% 45.58% 22.12% -27.72% 70.62%     
      qoq
    4.79% -176.96% -25.45% 64.44% 162.88% -195.37% -120.62% 274.97% -64.05% 289.64% -112.70% -271.39% -391.67% -129.95% 95.44% -70.77% -612.99% -117.05% 202.28% -139.41% -166.55% 18.19% 37.51% -47.73% 235.65% -45.70% 52.82% -56.15% 98.66% 28.18%  
      net income margin %
    Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% Infinity% 73209.52% 4039.75% -23650.00% -9140.40% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% 
      net income per share
    0.06 0.06 -0.07 -0.1 -0.06 -0.03 0.02 -0.12 -0.03 -0.09 -0.02 0.18 -0.1 0.04 -0.12 -0.06 -0.21 0.04 -0.24 -0.08 0.21 -0.32 -0.31 -0.23 -0.5 -0.15 -0.28 -0.18 -0.42 -3.4 -0.65 
      weighted-average number of common shares outstanding, basic
    27,285  26,893    25,900 25,778 25,763  25,719 25,593   25,365 25,126 25,301   25,211 24,453           
      weighted-average number of common shares outstanding, diluted
    31,547  26,893    26,550 25,778 25,763  25,719 25,983   25,365 25,126 25,301   25,211 26,547           
      loss before income tax expense
       -2,519,000 -1,498,000    -811,000         1,039,000 -6,094,000   -7,687,000 -6,504,000 -4,730,000 -9,049,000 -2,696,000 -4,965,000 -3,249,000 -7,410,000 -3,730,000 -2,910,000 
      weighted-average number of common shares outstanding, basic and diluted
     26,908  26,893 26,886 25,895    25,645   25,525 25,146     25,276   21,010 21,052 21,005 18,143 17,761 17,878 17,733  6,418 5,615 
      other income:
                                   
      other income
             200,000  800,000                    
      interest expense
         -17,750 -8,000 -52,000 -11,000                       
      total other income
         -17,750 -8,000 -52,000 -11,000 129,750 -31,000 676,000                    
      gain on ppp loan forgiveness
                                   
      gain on equipment sale
                       181,000            
      cost of sales
                                   
      interest and other income
                     -275,000 -247,000   -267,000 -232,000 -192,000 -168,000 -40,000 77,000 100,000 144,000 82,000 25,000 
      gain on ppp loan forgiven
                     91,250  365,000            
      interest and other (expense) income
                       -237,000            
      product sales
                         81,000 -161,000 20,000 99,000       
      total revenues
                         -10,500 -161,000 20,000 99,000       
      yoy
                                   
      qoq
                         -93.48% -905.00% -79.80%        
      cost of product sales
                         300,000 -144,000 28,000 102,000       
      revenues
                                500,000   
      revenue
                             125,000      
      change in fair value of warrant liability
                                 -1,526,000 -561,000 
      accrued dividends on redeemable convertible preferred stock
                                 -148,000 -300,000 
      deemed dividends for accretion of redeemable convertible preferred stock issuance costs
                                 -437,000 -429,000 
      net loss attributable to common stockholders
                             -2,696,000 -4,965,000 -3,249,000 -7,410,000 -26,062,000 -3,639,000 
      weighted average number of common shares outstanding, basic and diluted
                     25,207           17,502   
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2020-09-30 2020-06-30 2020-03-31 2019-09-30 2019-06-30 2019-03-31 
                                
        assets
                                
        current assets:
                                
        cash and cash equivalents
      19,661,000 25,942,000 37,121,000 25,379,000 17,420,000 14,936,000 20,261,000 17,694,000 16,655,000 21,388,000 22,070,000 21,566,000 14,708,000 16,305,000 13,378,000 17,046,000 15,229,000 14,406,000 22,709,000 25,802,000 7,332,000 10,270,000 12,335,000 11,777,000 14,947,000 19,584,000 
        accounts receivable
      13,408,000 11,757,000 13,082,000 14,453,000 16,400,000 5,361,000 5,591,000 4,873,000 4,240,000 3,411,000 3,495,000 3,084,000 2,874,000 1,852,000 1,498,000 834,000 796,000 5,471,000 385,000 303,000   205,000    
        inventories
      14,467,000 15,419,000 16,855,000 23,791,000 13,621,000 15,232,000 1,938,000 2,068,000 2,318,000 911,000 1,051,000 816,000 437,000 557,000 481,000 531,000 510,000 550,000 334,000 1,242,000       
        prepaid expenses and other current assets
      5,709,000 7,463,000 4,942,000 4,820,000 2,519,000 5,492,000 1,959,000 799,000 1,050,000 1,129,000 541,000 867,000 1,099,000 1,290,000 1,063,000 1,365,000 2,216,000 3,177,000 2,435,000 1,728,000 754,000 844,000 1,075,000 330,000  1,943,000 
        total current assets
      53,245,000 60,581,000 72,000,000 68,443,000 49,960,000 41,021,000 29,749,000 25,434,000 24,263,000 26,839,000 27,157,000 26,333,000 19,118,000 20,004,000 16,420,000 19,776,000 18,751,000 23,604,000 25,863,000 29,075,000 9,785,000 12,823,000 15,341,000 12,107,000 16,755,000 21,527,000 
        property and equipment
      372,000 326,000 294,000 18,000 22,000 34,000 33,000 45,000 57,000 58,000 38,000 46,000 56,000 72,000 73,000 87,000 109,000 115,000 134,000 156,000 854,000 938,000 1,025,000 1,169,000 1,223,000 1,190,000 
        intangible assets
      43,738,000 30,878,000 31,878,000 32,879,000 33,880,000 34,881,000 5,854,000 6,122,000 6,388,000 4,739,000 4,210,000 4,392,000 4,573,000 4,754,000 4,973,000 3,108,000 4,240,000 3,621,000 463,000 500,000 612,000 650,000 688,000    
        operating lease right-of-use assets
      301,000 310,000 319,000 324,000 158,000 175,000 193,000 210,000 74,000 92,000 109,000 149,000 169,000 188,000 42,000 63,000 84,000 104,000 123,000 143,000 63,000 96,000 129,000 191,000 222,000 252,000 
        other long-term assets
      54,000 19,000 19,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 21,000 23,000 32,000 81,000 52,000 58,000 40,000 44,000 48,000 
        total assets
      97,710,000 92,114,000 104,510,000 101,676,000 84,032,000 76,123,000 35,841,000 31,823,000 30,794,000 31,740,000 31,526,000 30,932,000 23,928,000 25,030,000 21,520,000 23,046,000 23,196,000 27,465,000 26,606,000 29,906,000 11,395,000 14,559,000 17,241,000 13,507,000 18,244,000 23,017,000 
        liabilities and stockholders’ equity
                                
        current liabilities:
                                
        accounts payable
      13,485,000 10,976,000 14,259,000 12,142,000 4,872,000 4,167,000 2,684,000 2,133,000 2,263,000 1,848,000 1,712,000 2,300,000 1,233,000 1,766,000 1,054,000 1,299,000 2,131,000 1,774,000 3,273,000 1,522,000 2,208,000 1,953,000 1,183,000 549,000 883,000 3,208,000 
        short-term debt, net of debt discount
      11,808,000                          
        accrued medicaid rebates
      11,140,000 9,317,000 18,031,000 16,226,000 12,937,000 6,866,000 8,047,000                    
        accrued liabilities
      7,746,000 9,408,000 9,117,000 7,459,000 7,541,000 8,914,000  11,425,000 8,017,000 9,013,000 7,141,000 5,748,000 4,922,000 3,662,000 2,899,000 2,149,000 1,351,000 1,366,000 995,000 835,000 792,000 627,000 868,000 558,000 576,000 448,000 
        total current liabilities
      44,179,000 38,490,000 44,183,000 38,596,000 25,350,000 19,947,000 19,734,000 18,216,000 15,300,000 16,241,000 10,393,000 9,588,000 7,494,000 6,461,000 4,661,000 3,812,000 3,482,000 4,558,000 5,360,000 3,106,000 3,219,000 2,739,000 2,051,000 1,107,000 1,459,000 3,656,000 
        long-term debt
      18,939,000 21,769,000 27,591,000 27,409,000 29,992,000 29,811,000     4,197,000 4,553,000 5,107,000 5,384,000 5,678,000 5,992,000 6,331,000 5,262,000 5,550,000 5,856,000 6,496,000 4,587,000 4,570,000    
        operating lease liabilities, net of current portion
      440,000 460,000 480,000 492,000 87,000 107,000 126,000 145,000  22,000 44,000 66,000 86,000 107,000    15,000 36,000 58,000    52,000 86,000 119,000 
        other long-term liabilities
      3,537,000 5,241,000 3,942,000 4,269,000 4,153,000 1,830,000                     
        total liabilities
      67,095,000 65,960,000 81,384,000 77,715,000 59,582,000 51,695,000 19,860,000 18,361,000 15,300,000 16,263,000 14,634,000 14,207,000 12,687,000 11,952,000 10,339,000 9,804,000 9,813,000 9,835,000 10,946,000 9,170,000 10,007,000 7,528,000 6,621,000 1,159,000 1,545,000 3,775,000 
        commitments and contingencies
                                
        stockholders’ equity
                                
        common stock, 0.001 par value...
      27,000 27,000 27,000 27,000 27,000 27,000 26,000 26,000 26,000 26,000 26,000 26,000 26,000 25,000 25,000 25,000 25,000 25,000 25,000 25,000 21,000 21,000 21,000 18,000 18,000 18,000 
        additional paid-in capital
      141,528,000 138,621,000 137,076,000 135,984,000 133,888,000 132,294,000 123,250,000 121,358,000 120,349,000 119,521,000 118,680,000 117,934,000 117,009,000 116,187,000 115,202,000 114,218,000 112,801,000 111,718,000 110,787,000 109,769,000 85,838,000 84,977,000 83,836,000 73,822,000 73,208,000 72,502,000 
        accumulated deficit
      -110,940,000 -112,494,000 -113,977,000 -112,050,000 -109,465,000 -107,893,000 -107,295,000 -107,922,000 -104,881,000 -104,070,000 -101,814,000 -101,235,000 -105,794,000 -103,134,000 -104,046,000 -101,001,000 -99,443,000 -94,113,000 -95,152,000 -89,058,000 -84,471,000 -77,967,000 -73,237,000 -61,492,000 -56,527,000 -53,278,000 
        total stockholders’ equity
      30,615,000 26,154,000 23,126,000 23,961,000 24,450,000 24,428,000 15,981,000 13,462,000 15,494,000 15,477,000 16,892,000 16,725,000 11,241,000 13,078,000 11,181,000 13,242,000 13,383,000 17,630,000 15,660,000 20,736,000 1,388,000 7,031,000 10,620,000 12,348,000 16,699,000 19,242,000 
        total liabilities and stockholders’ equity
      97,710,000 92,114,000 104,510,000 101,676,000 84,032,000 76,123,000 35,841,000 31,823,000 30,794,000 31,740,000 31,526,000 30,932,000 23,928,000 25,030,000 21,520,000 23,046,000 23,196,000 27,465,000 26,606,000 29,906,000 11,395,000 14,559,000 17,241,000 13,507,000 18,244,000 23,017,000 
        current portion of long-term debt, net of discount
       8,789,000        5,380,000                 
        short-term debt, net of discount
        2,776,000 2,769,000                       
        long-term inventory payable
        5,188,000 6,949,000                       
        debt, net of unamortized discount
            4,125,000 4,658,000 5,020,000                  
        other accrued liabilities
            4,878,000                    
        current portion of long-term debt
                1,540,000 1,540,000 1,339,000 1,033,000 708,000 364,000  1,418,000 1,092,000 749,000       
        ppp loan, current portion
                          219,000 159,000     
        long-term portion of ppp and eidl loans
                         150,000 292,000      
        inventory
                          1,699,000 1,709,000 1,726,000    
        1
                                
        long-term portion of ppp loan
                           202,000     
        prepaid expenses & other current assets
                              1,808,000  
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-03-31 2018-12-31 
                                     
          cash flows from operating activities
                                     
          net income
        1,554,000          -579,000     -1,558,000 -5,330,000   -2,016,000 5,116,000         
          adjustments to reconcile net income to net cash from operating activities:
                                     
          stock-based compensation
        1,518,000 1,124,000 1,092,000 2,096,000 1,200,000 782,000 722,000 840,000 821,000 750,000 730,000 785,000 872,000 886,000 949,000 1,300,000 1,083,000 863,000 1,009,000 836,000 673,000 773,000 724,000 714,000 365,000 501,000 537,000 345,000 219,000 
          depreciation and amortization
        1,131,000 1,017,000 1,009,000 1,005,000 1,013,000 355,000 278,000 261,000 252,000 275,000 202,000 211,000 213,000 252,000 170,000 1,171,000 181,000 137,000 85,000 85,000 155,000 161,000 164,000 164,000 162,000 148,000 121,000 55,000 23,000 
          inventory step-up
        350,000 1,421,000 1,324,000 1,207,000 1,142,000                         
          excess and obsolete inventory reserve
        227,000                             
          debt discount amortization and non-cash interest expenses
        118,000  179,000 48,000 294,000                         
          non-cash lease expense
        9,000 9,000 5,000 13,000 17,000 17,000 17,000                       
          other operating activity
        7,000                             
          changes in operating assets and liabilities:
                                     
          accounts receivable
        -1,651,000 1,325,000 1,371,000 1,947,000 -11,039,000 -939,000 -717,000 -633,000 -829,000 84,000 -411,000 -210,000 -1,022,000 -354,000 -664,000 -38,000 4,675,000 -5,086,000 -82,000 -3,000 -252,000 -48,000 205,000 268,000     
          inventories
        1,406,000 -581,000 5,614,000 -11,377,000 468,000 -283,000 130,000 250,000 -1,407,000 140,000 -235,000 -379,000 120,000 -76,000 50,000 -21,000 40,000 -216,000   -106,000         
          prepaid expenses and other assets
        1,754,000 -2,521,000 -122,000 -2,301,000 2,973,000 -3,520,000 -159,000 251,000 79,000 -588,000 326,000 232,000 191,000 -227,000 302,000 866,000 961,000 -743,000 -702,000 1,265,000 -846,000 -1,325,000 54,000 231,000 1,020,000 -1,787,000 1,478,000 -1,187,000 -170,000 
          accounts payable
        2,508,000 -3,284,000 2,122,000 7,265,000 705,000 1,482,000 552,000 -130,000 414,000 105,000 -589,000 1,067,000 -530,000 712,000 -245,000 -82,000 -393,000 -1,499,000 1,751,000 -239,000 -583,000 136,000 255,000 770,000 608,000 26,000 -334,000 1,736,000 159,000 
          accrued medicaid rebates
        1,824,000 -8,714,000 1,806,000 3,288,000 6,071,000 -1,181,000                        
          accrued liabilities
        -1,532,000 426,000 1,786,000 172,000 -1,373,000   3,398,000 -1,017,000 1,850,000 1,400,000 806,000 1,239,000 704,000 750,000 793,000 -30,000 350,000 138,000 106,000 -478,000 315,000 168,000 -247,000 -536,000 797,000 -52,000 -306,000 199,000 
          other non-current assets and liabilities
        -1,818,000 -4,025,000 -2,233,000 7,181,000 2,191,000                         
          net cash from operating activities
        7,405,000 -11,551,000 12,026,000 7,959,000 2,090,000 -765,000 2,952,000 1,255,000 -2,473,000 387,000 873,000 7,103,000 -1,548,000 2,840,000 -1,703,000 2,461,000 1,223,000 -5,117,000 -2,950,000 -369,000 3,715,000 -7,182,000 -5,094,000 -2,853,000 -7,217,000 -3,848,000 -3,215,000 -6,767,000 -1,774,000 
          capital expenditures
        -75,000 -49,000  -12,000 -14,000  -12,000 -11,000 -15,000 -4,000 -2,000  -44,000 -2,000  -34,000 -32,000 -337,000 -54,000 
          free cash flows
        7,330,000 -11,600,000 12,026,000 7,959,000  -777,000 2,952,000 1,255,000 -2,487,000 387,000 873,000 7,103,000  2,828,000 -1,703,000 2,450,000 1,208,000 -5,121,000 -2,952,000 -369,000  -7,226,000 -5,096,000 -2,853,000  -3,882,000 -3,247,000 -7,104,000 -1,828,000 
          cash flows from investing activities
                                     
          purchases of product license rights
        -15,000,000      -1,868,000                     
          purchases of property and equipment
        -75,000 -49,000    -12,000 -14,000     -12,000 -11,000 -15,000 -4,000 -2,000   -44,000 -2,000 -4,000 -34,000 -32,000 -388,000 -54,000 
          net cash from investing activities
        -15,075,000 -49,000    -38,132,000 -1,882,000     -12,000 -2,000,000 -761,000 -15,000             
          cash flows from financing activities
                                     
          proceeds from stock option exercises
        1,389,000    394,000    7,000                   4,000  
          net cash from financing activities
        1,389,000 421,000 394,000 33,572,000 -385,000 -216,000 -378,000 -294,000 -368,000 -246,000 -49,000 99,000 35,000 117,000 -385,000 -304,000 -2,000 594,000 103,000 21,189,000 2,158,000 788,000 7,490,000 4,921,000 77,000 4,000  
          change in cash and cash equivalents
        -6,281,000 -11,179,000 11,742,000 7,959,000 2,484,000 -5,325,000 2,567,000 1,039,000 -4,733,000 -682,000 504,000 6,858,000 -1,597,000 2,927,000 -3,668,000 1,817,000 823,000 -8,303,000 -3,093,000 689,000 3,818,000 13,963,000 -2,938,000 -2,065,000 269,000 289,000 -3,170,000 -7,151,000 20,132,000 
          cash and cash equivalents at beginning of period
        25,942,000  14,936,000  21,388,000  16,305,000  14,406,000  21,295,000  12,066,000 26,735,000 
          cash and cash equivalents at end of period
        19,661,000  11,742,000 7,959,000 17,420,000  2,567,000 1,039,000 16,655,000  504,000 6,858,000 14,708,000  -3,668,000 1,817,000 15,229,000  -3,093,000 689,000 25,113,000  -2,938,000 -2,065,000 12,335,000 289,000 -3,170,000 19,584,000 20,132,000 
          supplemental disclosures of cash flow information
                                     
          cash paid for interest
        881,000 930,000 1,543,000 210,000 642,000 140,000 163,000 172,000 190,000 204,000 212,000 210,000 216,000 185,000 167,000 163,000 215,000 212,000 179,000 210,000 214,000 252,000 187,000 169,000 189,000     
          cash paid for income taxes
        37,000 1,000 28,000 81,000 8,000 -99,000                        
          net loss
         1,483,000 -1,927,000 -2,585,000 -1,572,000   -3,041,000 -811,000    -2,660,000 912,000    1,039,000    -7,687,000 -6,504,000 -4,730,000 -9,049,000 -2,696,000 -4,965,000 -7,410,000 -3,730,000 
          adjustments to reconcile net loss to net cash from operating activities:
                                     
          debt discount amortization
             1,039,000 22,000 23,000 25,000 27,000 29,000 32,000 29,000 31,000 30,000 30,000 36,000 38,000 37,000 37,000 36,000 36,000 35,000 23,000 27,000     
          changes in operating assets and liabilities, net of impact of business acquisition:
                                     
          cash from investing activities
                                     
          acquisition of business
                                     
          purchase of product licensing rights
                                     
          net proceeds from the issuance of long-term debt
                                     
          repayment of long-term debt
             -385,000 -385,000 -385,000  -385,000    -385,000             
          common stock issued in private placement offering
                                     
          payment of tax withholding related to net share settlement of stock option exercises
                  -181,000                 
          employee stock purchase plan
                                     
          cash and cash equivalents at beginning of year
                                     
          cash and cash equivalents at end of year
                                     
          supplemental disclosures of non-cash investing and financing activities:
                                     
          debt issuance costs
                                     
          fair value of warrants issued in connection with debt agreement
                                     
          adjustment of operating lease right-of-use assets and liabilities due to tenant allowance
                                    
          right-of-use assets obtained in exchange for lease liabilities
                                     
          proceeds from employee stock purchase plan and stock option exercises
                17,000 139,000 132,000     68,000 9,000   163,000 43,000   171,000 77,000   
          stock warrant exercises
                                     
          other accrued liabilities
                                     
          right-of-use assets and liabilities obtained due to lease renewal
                                    
          supplemental disclosures of non-cash transactions in investing and financing activities
                                     
          relative fair value of warrants issued in connection with debt
                                     
          gain on forgiveness of ppp loan
                                     
          gain on sale of equipment
                                   
          proceeds from sale of equipment
                                   
          debt paydown
                                     
          net proceeds from employee stock purchase plan and stock option and stock warrant exercises
                                     
          supplemental disclosures of non-cash transactions
                                     
          supplemental disclosures of non-cash investing activities:
                                     
          payable for product license fee
                        750,000             
          common stock issued for product candidate licensing rights
                             1,264,000     
          proceeds from issuance of long-term debt, net of issuance costs
                                    
          proceeds from sales of common stock, net of offering costs
                             21,026,000 297,000 7,459,000     
          proceeds from ppp and eidl loans
                                    
          proceeds from employee stock purchase plan and stock option and stock warrant exercises
                                     
          relative fair value of common stock warrants issued in connection with debt
                                    
          adjustments to reconcile net loss to net cash provided by operating activities:
                                     
          gain on forgiveness of debt
                                    
          purchase of product license rights
                      -2,000,000               
          proceeds from employee stock option exercises and espp
                                     
          proceeds from employee stock option exercises
                            103,000    31,000     
          cash used in investing activities
                                     
          eidl loan payoff
                                    
          supplemental disclosure of non-cash financing activity
                                     
          relative fair value of warrants to purchase common stock issued in connection with debt
                                     
          proceeds from ppp loan
                                     
          change in fair value of warrant liability
                                    1,526,000 
          proceeds from initial public offering, net of underwriting discounts and commissions
                                     
          payments of initial public offering costs
                                     
          accrued dividends on redeemable convertible preferred stock
                                    148,000 
          deemed dividends for accretion of redeemable convertible preferred stock issuance costs
                                    437,000 
          purchase of equipment included in accounts payable
                                     
          beneficial conversion feature on redeemable convertible preferred stock
                                     
          reclassification of common stock warrants from liability to additional paid-in-capital
                                     
          inventory
                              10,000 17,000 -1,346,000     
          purchases of equipment included in accounts payable
                                   51,000  
          proceeds from issuance of redeemable convertible preferred stock, net of issuance costs
                                     
          proceeds from issuance of common stock
                                     
          common stock warrant liability issued with redeemable convertible preferred stock financing
                                     
          proceeds from sale of common stock