7Baggers

scPharmaceuticals Inc
(NASDAQ:SCPH) 

SCPH stock logo

scPharmaceuticals Inc., a pharmaceutical company, engages in the development and commercialization of various pharmaceutical products. The company's lead product candidate is FUROSCIX that consists of proprietary buffered formulation of furosemide, which is delivered through the SmartDose drug deliv...

Full Time Employees: 26
Sector: Healthcare
Industry: Biotechnology

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At a glance:
Bull Thesis:
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Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2025-06-30 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 2018-06-30 2018-03-31 2017-12-31 
                                   
      product revenues
    16,041,000 11,752,000 12,150,000 10,026,000 8,054,000 6,102,000 6,096,000 3,796,000 1,638,000 2,063,000                      
      operating expenses:
                                   
      cost of product revenues
    5,011,000 3,471,000 3,965,000 3,311,000 2,300,000 1,785,000 1,773,000 1,079,000 354,000 605,000                      
      research and development
    4,098,000 4,631,000 3,154,000 3,541,000 2,677,000 2,726,000 3,338,000 3,421,000 2,934,000 2,116,000 2,326,000 3,718,000 5,142,000 4,347,000 4,530,000 3,694,000 3,807,000 4,009,000 3,745,000 5,119,000 5,139,000 4,146,000 8,318,000 4,293,000 5,496,000 6,524,000 3,149,000 3,896,000 4,855,000 4,048,000  
      selling, general and administrative
    21,226,000 21,407,000 21,374,000 21,320,000 17,508,000 17,447,000 16,242,000 14,135,000 12,096,000 10,896,000                      
      total operating expenses
    30,335,000 29,509,000 28,493,000 28,172,000 22,485,000 21,958,000 21,353,000 18,635,000 15,384,000 13,617,000 9,502,000 9,995,000 9,421,000 7,240,000 6,721,000 5,905,000 6,456,000 6,741,000 7,170,000 8,438,000 7,676,000 6,649,000 10,433,000 6,289,000 7,335,000 8,847,000 5,223,000 5,841,000 9,904,000 8,699,000  
      income from operations
    -14,294,000 -17,757,000 -16,343,000 -18,146,000 -14,431,000 -15,856,000 -15,257,000 -14,839,000 -13,746,000 -11,554,000 -9,502,000 -9,995,000 -9,421,000 -7,240,000 -6,721,000 -5,905,000 -6,456,000 -6,741,000 -7,170,000 -8,438,000 -7,676,000 -6,649,000 -10,433,000 -6,289,000 -7,335,000 -8,847,000 -5,223,000 -5,841,000 -9,904,000 -8,699,000  
      yoy
    -0.95% 11.99% 7.12% 22.29% 4.98% 37.23% 60.57% 48.46% 45.91% 59.59% 41.38% 69.26% 45.93% 7.40% -6.26% -30.02% -15.89% 1.38% -31.28% 34.17% 4.65% -24.84% 99.75% 7.67% -25.94% 1.70%      
      qoq
    -19.50% 8.65% -9.94% 25.74% -8.99% 3.93% 2.82% 7.95% 18.97% 21.60% -4.93% 6.09% 30.12% 7.72% 13.82% -8.53% -4.23% -5.98% -15.03% 9.93% 15.45% -36.27% 65.89% -14.26% -17.09% 69.39% -10.58% -41.02% 13.85%   
      change in fair value of term loan
    -150,000 300,000 -251,000 -2,954,000                            
      change in fair value of revenue purchase and sale liability
    -2,560,000 -1,752,000 -1,812,000 -1,830,000                            
      other income
    -128,000 136,000 46,000 1,804,000 -1,189,000 2,972,000 2,412,000 -36,000 239,000 990,000 1,363,000 -22,000 64,000 14,000 17,000 10,000 33,000 255,000 9,000 19,000   -45,000 83,000   2,000 -5,000 -11,000 -42,000  
      interest income
    509,000 716,000 1,000,000 903,000 664,000 877,000 1,125,000 1,301,000 1,363,000 1,315,000 850,000 232,000 107,000 13,000 7,000 10,000 12,000 20,000 34,000 36,000 21,000 224,000 310,000 397,000 463,000 490,000 491,000 445,000 424,000 351,000  
      interest expense
    -1,401,000 -1,385,000 -1,485,000 -1,850,000 -2,134,000 -2,101,000 -2,092,000 -2,060,000 -2,010,000 -1,961,000 -1,959,000 -377,000 -447,000 -518,000 -621,000 -667,000 -651,000 -636,000 -657,000 -655,000 -639,000 -636,000 -646,000 -398,000 -369,000 -354,000 -370,000 -360,000 -359,000 -342,000  
      net income
    -18,024,000 -19,742,000 -18,845,000 -35,105,000 -17,090,000 -14,108,000 -13,812,000 -15,634,000 -14,154,000 -11,210,000 -9,248,000 -10,162,000 -9,697,000 -7,731,000 -7,318,000 -6,552,000 -7,062,000 -7,102,000 -7,784,000 -9,038,000            
      yoy
    5.47% 39.93% 36.44% 124.54% 20.74% 25.85% 49.35% 53.85% 45.96% 45.00% 26.37% 55.10% 37.31% 8.86% -5.99% -27.51%                
      qoq
    -8.70% 4.76% -46.32% 105.41% 21.14% 2.14% -11.65% 10.46% 26.26% 21.22% -8.99% 4.80% 25.43% 5.64% 11.69% -7.22% -0.56% -8.76% -13.87%             
      net income per share
    -0.34 -0.37 -0.31 -0.75 -0.44 -0.36 -0.35 -0.41 -0.36 -0.3 -0.29 -0.37 -0.35 -0.28 -0.26 -0.24 -0.26 -0.26 -0.28 -0.33 -0.36 -0.35 -0.58 -0.33 -0.39 -0.47 -0.28 -0.31 -0.53 -0.47  
      weighted-average common shares outstanding — basic and diluted
    53,719,662 53,676,376  46,558,474 38,984,745 38,952,131  38,760,895 38,692,624 37,800,960  27,401,060 27,378,507 27,368,354  27,355,454 27,355,454 27,336,724  27,319,465 23,355,418 20,218,473  18,584,327 18,580,430 18,575,726  18,569,289 18,549,978 18,535,432  
      other comprehensive loss:
                                   
      unrealized gain on short-term investments
      0.25     32 -3                  
      comprehensive loss
    -18,024 -19,742 -18,845 -35,105 -17,090 -14,107 -13,811 -15,630 -14,168 -11,234 -9,216 -10,155 -9,700 -7,734 -7,320 -6,552 -7,061 -7,104 -7,791 -9,030            
      loss on extinguishment of debt
       -13,032,000                            
      unrealized loss on short-term investments
            -14 -24    -3    -2              
      other comprehensive gain:
                                   
      general and administrative
              7,176,000 6,277,000 4,279,000 2,893,000 2,191,000 2,211,000 2,649,000 2,732,000 3,425,000 3,319,000 2,537,000 2,503,000 2,115,000 1,996,000 1,839,000 2,323,000 2,074,000 1,945,000 5,049,000 4,651,000  
      unrealized gain on short term investments
                                 
      other expense
                        -1,000 -31,000   -14,000 -8,000      
      net loss and comprehensive loss
                        -8,295,000 -7,092,000 -10,814,000 -6,207,000 -7,255,000 -8,719,000 -5,100,000 -5,761,000 -9,850,000 -8,732,000  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-06-30 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 2018-06-30 2018-03-31 
                                    
        assets
                                    
        current assets
                                    
        cash and cash equivalents
      40,809,000 57,544,000 75,655,000 91,484,000 38,504,000 58,447,000 46,814,000 35,042,000 71,350,000 75,453,000 71,061,000 41,289,000 41,178,000 51,630,000 74,268,000 79,323,000 74,969,000 75,837,000 71,819,000 44,278,000 78,860,000 75,339,000 72,624,000 83,562,000 79,467,000 83,378,000 89,478,000 95,299,000   
        accounts receivable
      19,409,000 13,854,000 11,721,000 9,217,000 6,116,000 5,772,000 4,489,000 4,175,000 1,610,000 3,004,000                     
        inventory
      14,573,000 14,141,000 13,903,000 18,107,000 15,308,000 9,572,000 8,840,000 7,123,000 5,832,000 3,621,000 1,230,000                    
        prepaid expenses
      3,654,000 3,460,000 3,549,000 3,373,000 2,330,000 2,198,000 2,436,000 1,579,000 1,835,000 2,685,000 2,282,000 1,643,000 1,673,000 2,567,000 2,791,000 1,621,000 2,396,000 2,637,000 2,610,000 1,091,000 2,897,000 3,370,000 2,619,000 894,000 1,658,000 1,770,000 1,757,000 981,000 1,608,000 1,323,000 
        deposits and other current assets
      284,000 354,000 1,021,000 1,148,000 373,000 536,000 1,160,000 1,264,000 1,420,000 1,286,000 1,428,000                    
        total current assets
      78,729,000 89,353,000 105,849,000 123,329,000 62,631,000 76,525,000 92,938,000 104,339,000 113,574,000 126,667,000 123,308,000 47,169,000 57,855,000 68,226,000 78,275,000 86,470,000 92,492,000 99,066,000 107,826,000 115,688,000 122,536,000 79,073,000 75,647,000 84,887,000 81,773,000 85,811,000 91,893,000 96,831,000 102,965,000 111,568,000 
        property and equipment
      48,000 52,000 56,000 51,000 47,000 52,000 58,000 39,000 45,000 48,000 54,000 62,000 57,000 66,000 69,000 77,000 77,000 85,000 93,000 102,000 110,000 119,000 127,000 136,000 145,000 154,000 164,000 215,000 225,000 193,000 
        right-of-use lease assets - operating
      1,175,000 1,236,000 1,273,000 1,330,000 1,309,000 1,355,000 1,401,000 1,535,000 363,000 466,000 566,000 677,000 785,000 318,000 410,000 513,000 616,000 717,000 815,000 910,000 1,002,000 1,092,000 1,179,000 1,264,000 1,347,000 1,427,000     
        deposits and other assets
      303,000 322,000 341,000 359,000 1,471,000 522,000 82,000 188,000 189,000 190,000 267,000 310,000 283,000 283,000 283,000 289,000 248,000 243,000 132,000 78,000 89,000 22,000 148,000 197,000 12,000 13,000 10,000 9,000 8,000 7,000 
        total assets
      80,255,000 90,963,000 107,519,000 125,069,000 65,458,000 78,454,000 94,479,000 106,101,000 114,171,000 127,371,000 124,195,000 48,400,000 59,162,000 68,893,000 79,037,000 87,531,000 93,615,000 100,293,000 109,048,000 116,960,000 123,919,000 80,488,000 77,283,000 86,666,000 83,459,000 87,587,000 93,755,000 98,819,000 105,009,000 113,652,000 
        liabilities and stockholders’ equity
                                    
        current liabilities
                                    
        accounts payable
      4,026,000 4,988,000 3,883,000 5,003,000 5,294,000 2,706,000 4,001,000 3,370,000 1,182,000 1,626,000 1,518,000 996,000 982,000 445,000 544,000 447,000 531,000 753,000 1,666,000 839,000 770,000 652,000 1,142,000 542,000 1,419,000 221,000 587,000 1,667,000 2,358,000 1,519,000 
        accrued expenses
      16,082,000 10,858,000 10,702,000 9,868,000 7,399,000 9,206,000 8,901,000 7,109,000 5,120,000 5,561,000 5,289,000 5,178,000 4,126,000 3,477,000 3,995,000 3,484,000 3,579,000 3,585,000 4,787,000 5,910,000 4,724,000 3,590,000 3,688,000 7,169,000 7,110,000 5,474,000 2,922,000 2,212,000 2,565,000 2,736,000 
        lease obligation - operating, short-term
      264,000 254,000 239,000 231,000 190,000 184,000 176,000 248,000 267,000 419,000 567,000 594,000 553,000 356,000 476,000 497,000 485,000 472,000             
        other current liabilities
      58,000 212,000 52,000 162,000 47,000 222,000 56,000 224,000 66,000 129,000 42,000 528,000 28,000 71,000 26,000               4,000 
        total current liabilities
      20,430,000 16,312,000 14,876,000 15,264,000 12,930,000 12,318,000 13,134,000 10,951,000 6,635,000 7,735,000 7,416,000 17,176,000 15,540,000 14,175,000 14,846,000 14,205,000 11,888,000 9,648,000 9,321,000 7,197,000 5,929,000 4,663,000 5,237,000 8,104,000 13,532,000 10,096,000 6,673,000 7,430,000 7,463,000 5,800,000 
        term loan, long-term
      51,200,000 51,050,000 51,350,000 51,099,000 39,990,000 39,385,000 38,811,000 38,262,000 37,741,000 37,252,000 36,794,000  2,463,000 4,913,000 7,354,000 9,777,000 12,156,000 14,515,000 16,858,000            
        revenue purchase and sale liability
      28,957,000 27,675,000 26,869,000 26,830,000                           
        lease obligation - operating, long-term
      984,000 1,053,000 1,104,000 1,167,000 1,184,000 1,233,000 1,282,000 1,303,000 4,000 5,000 7,000 114,000 271,000 10,000  99,000 229,000 356,000             
        total liabilities
      101,571,000 96,090,000 94,199,000 94,360,000 56,208,000 53,888,000 57,261,000 56,955,000 50,744,000 51,564,000 51,762,000 17,290,000 18,705,000 19,500,000 22,567,000 24,421,000 24,572,000 24,778,000 26,878,000 27,145,000 25,860,000 25,384,000 25,918,000 28,780,000 19,990,000 17,189,000 15,011,000 15,429,000 16,417,000 15,708,000 
        commitments and contingencies
                                    
        stockholders’ equity
                                    
        preferred stock, 0.0001 par value...
                                    
        common stock, 0.0001 par value...
      5,000 5,000  5,000 4,000 4,000  4,000 4,000 4,000  3,000 3,000 3,000  3,000 3,000 3,000  3,000 3,000 2,000  2,000 2,000 2,000  2,000 2,000 2,000 
        additional paid-in capital
      382,939,000 381,104,000 379,809,000 378,353,000 321,790,000 320,016,000 318,561,000 316,678,000 315,329,000 313,541,000 298,934,000 248,395,000 247,587,000 246,823,000 246,166,000 245,487,000 244,868,000 244,279,000 243,830,000 243,684,000 242,898,000 191,649,000 180,818,000 176,524,000 175,900,000 175,574,000 175,201,000 174,748,000 174,189,000 173,690,000 
        accumulated deficit
      -404,260,000 -386,236,000 -366,494,000 -347,649,000 -312,544,000 -295,454,000 -281,346,000 -267,534,000 -251,900,000 -237,746,000 -226,536,000 -217,288,000 -207,126,000 -197,429,000 -189,698,000 -182,380,000 -175,828,000 -168,766,000 -161,664,000 -153,880,000 -144,842,000 -136,547,000 -129,455,000 -118,640,000 -112,433,000 -105,178,000 -96,459,000 -91,360,000 -85,599,000 -75,748,000 
        total stockholders’ equity
      -21,316,000 -5,127,000 13,320,000 30,709,000 9,250,000 24,566,000 37,218,000 49,146,000 63,427,000 75,807,000 72,433,000 31,110,000 40,457,000 49,393,000 56,470,000 63,110,000 69,043,000 75,515,000 82,170,000 89,815,000 98,059,000 55,104,000 51,365,000 57,886,000 63,469,000 70,398,000 78,744,000 83,390,000 88,592,000 97,944,000 
        total liabilities and stockholders’ equity
      80,255,000 90,963,000 107,519,000 125,069,000 65,458,000 78,454,000 94,479,000 106,101,000 114,171,000 127,371,000 124,195,000 48,400,000 59,162,000 68,893,000 79,037,000 87,531,000 93,615,000 100,293,000 109,048,000 116,960,000 123,919,000 80,488,000 77,283,000 86,666,000 83,459,000 87,587,000 93,755,000 98,819,000 105,009,000 113,652,000 
        short-term investments
            29,199,000 55,156,000 31,527,000 40,618,000 47,125,000 3,897,000 14,673,000 13,788,000 1,010,000 5,515,000 15,052,000 20,490,000 33,276,000            
        derivative liability
          1,841,000 733,000 3,857,000 6,303,000 6,267,000 6,510,000 7,517,000           795,000 765,000 766,000       
        other liabilities
          263,000 219,000 177,000 136,000 97,000 62,000 28,000  431,000 402,000 367,000 340,000 299,000 259,000 219,000 178,000 138,000 98,000 58,000 16,000 216,000 189,000 159,000 130,000 109,000 87,000 
        common stock; 0.0001 par value...
        5,000    4,000    3,000    3,000    3,000    2,000    2,000    
        accumulated other comprehensive loss
                  -7,000 -4,000                 
        accumulated other comprehensive income
            -1,000 -2,000 -6,000 8,000 32,000                    
        restricted cash
                182,000   182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 182,000 
        term loan, short-term
                 9,880,000 9,851,000 9,826,000 9,805,000 9,777,000 7,293,000 4,838,000 2,408,000            
        other current assets
                 340,000 331,000 59,000 24,000 11,000 75,000 102,000 121,000 146,000 12,000 59,000 94,000 128,000 148,000 169,000 179,000 97,000 151,000 135,000 
        accumulated other comprehensive gain
                    -1,000   -1,000 1,000 8,000           
        vat receivable
                         112,000 298,000 305,000 310,000 303,000 500,000 494,000 479,000 454,000 438,000 830,000 
        current portion of lease obligation - operating
                        460,000   421,000 407,000   366,000 353,000 341,000 309,000 276,000 
        long-term lease obligation - operating
                        480,000            
        short term investments
                         70,061,000 40,469,000          
        lease obligation - operating, short term
                         448,000 435,000   393,000 379,000      
        term loan, long term
                         19,170,000 19,076,000 18,996,000 18,915,000 18,842,000 5,086,000 5,649,000 6,826,000 6,421,000 7,331,000 8,222,000 
        lease obligation - operating, long term
                         600,000 717,000   1,052,000 1,156,000      
        long term lease obligation - operating
                           832,000 943,000   1,255,000 1,353,000 1,448,000 1,514,000 1,599,000 
        term loan, short term
                              4,624,000 4,035,000 2,811,000 3,210,000 2,231,000 1,265,000 
        right-of-use lease assets - operating (type b)
                                1,506,000 1,582,000 1,629,000 1,702,000 
        cash
                                  100,768,000 109,280,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-06-30 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 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 
                                     
          cash flows from operating activities
                                     
          net loss
        -18,024,000 -19,742,000 -18,845,000 -35,105,000 -17,090,000 -14,108,000 -13,812,000 -15,634,000 -14,154,000 -11,210,000 -9,248,000 -10,162,000 -9,697,000 -7,731,000 -7,318,000 -6,552,000 -7,062,000 -7,102,000 -7,784,000 -9,038,000   -6,208,000   -5,100,000 -5,761,000   
          adjustments to reconcile net loss to cash from operating activities
                                     
          depreciation expense
        4,000 4,000 4,000 5,000 5,000 6,000 6,000 6,000 6,000 6,000 9,000 10,000 9,000 9,000 8,000 10,000 8,000 8,000 9,000 8,000 9,000 8,000 10,000 9,000 10,000 9,000 10,000 9,000 10,000 
          amortization expense - right-of-use leased assets - operating
        60,000 59,000   47,000 45,000   103,000 99,000 111,000 108,000 119,000 93,000 103,000 102,000 101,000 98,000 95,000 93,000 90,000 87,000 82,000 80,000 79,000 76,000 74,000 73,000 71,000 
          accretion on short-term investments
          -120,000 -542,000 -699,000 -354,000 -517,000                    
          allowance for excess, damaged and obsolete inventory
        118,000 17,000 25,000 25,000 25,000 25,000                        
          stock-based compensation
        1,519,000 1,295,000 1,285,000 1,226,000 1,491,000 1,440,000 1,416,000 1,281,000 1,179,000 980,000 737,000 785,000 680,000 636,000 637,000 619,000 589,000 521,000 127,000 744,000 621,000 508,000 333,000 326,000 355,000 453,000 563,000 497,000 622,000 
          non-cash interest expense
          297,000 649,000 616,000 590,000 559,000 524,000 493,000 575,000 91,000 104,000 114,000 144,000 147,000 136,000 127,000 137,000 134,000 125,000 121,000 87,000 93,000 80,000 96,000 90,000 98,000 90,000 
          fair value adjustment to term loan
        150,000 -300,000 251,000                           
          fair value adjustment to revenue purchase and sale liability
        2,560,000 1,752,000 1,812,000                           
          fair value adjustment to derivative liability
          -1,841,000 1,108,000 -3,124,000 -2,446,000 36,000 -243,000 -1,007,000         30,000        
          changes in operating assets and liabilities
                                     
          accounts receivable
        -5,556,000 -2,132,000 -2,561,000 -3,101,000 -344,000 -1,283,000 -314,000 -2,565,000 1,394,000 -3,004,000                    
          inventory
        -550,000 -255,000 4,181,000 -2,824,000 -5,761,000 -758,000 -1,716,000 -1,291,000 -2,212,000 -2,390,000                    
          prepaid expenses and other assets
        -105,000 775,000 -30,000 -708,000 -917,000 422,000 -646,000 411,000 717,000 -261,000 -1,691,000 -5,000 622,000 187,000 -1,175,000 798,000 262,000 -119,000 -1,435,000 1,930,000 461,000 -720,000 981,000 126,000 -19,000 -884,000 664,000 90,000 -703,000 
          accounts payable, accrued expenses and other liabilities
        3,713,000 1,388,000 -1,426,000 2,320,000 560,000 -862,000 2,161,000 4,179,000 -1,101,000 317,000 439,000 993,000 1,016,000 -681,000 499,000 -296,000 -341,000 -2,227,000 -406,000 1,275,000 1,028,000 -685,000 -866,000 2,710,000 2,096,000 -451,000 -1,105,000 611,000 -432,000 
          net cash from operating activities
        -16,111,000 -17,139,000  -17,424,000 -20,227,000 -17,701,000  -13,451,000 -14,141,000 -16,494,000  -8,196,000 -7,175,000 -7,369,000  -5,167,000 -6,271,000 -8,615,000  -4,808,000 -5,962,000 -7,743,000 -5,578,000 -3,911,000 -6,118,000  -5,465,000 -8,472,000 -9,074,000 
          capital expenditures
           -15,000 -6,000    
          free cash flows
        -16,111,000 -17,139,000  -17,424,000 -20,227,000 -17,701,000  -13,451,000 -14,141,000 -16,494,000  -8,211,000 -7,175,000 -7,375,000  -5,167,000 -6,271,000 -8,615,000  -4,808,000 -5,962,000 -7,743,000 -5,578,000 -3,911,000 -6,118,000  -5,465,000 -8,472,000 -9,074,000 
          cash flows from investing activities
                                     
          maturities of short-term investments
          1,000 29,319,000 26,500,000 16,000,000 21,100,000 7,000,000 3,900,000 10,800,000   4,500,000 10,550,000 9,400,000 16,700,000            
          net cash from investing activities
           -9,000 1,000 29,319,000  -22,925,000 9,427,000 7,000,000  10,784,000 -861,000 -12,790,000  9,521,000 5,403,000 12,705,000  -29,692,000         
          cash flows from financing activities
                                     
          payment on revenue purchase and sale liability
        -940,000 -972,000                            
          proceeds from employee stock purchase plan
          171,000   282,000   89,000                  
          proceeds from the exercise of vested stock options
          47,000 181,000  68,000    23,000 21,000  9,000  2,000 561,000 154,000 35,000 18,000 2,000 56,000 
          settlement of restricted stock units for tax withholding obligations
          -166,000                        
          net cash from financing activities
        -624,000 -972,000  70,413,000 283,000 15,000  68,000 611,000 13,704,000  -2,477,000 -2,416,000 -2,479,000  -72,000  -82,000 49,952,000 10,458,000 9,673,000 18,000  -4,000 1,000 56,000 
          net decrease in cash and cash equivalents
                                     
          cash and cash equivalents at beginning of period
        75,655,000  46,814,000                        
          cash and cash equivalents at end of period
        -16,735,000 57,544,000  52,980,000 -19,943,000 58,447,000                        
          supplemental cash flow information
                                     
          interest paid
        1,400,000 1,385,000 1,487,000 1,586,000 1,501,000 1,469,000 1,485,000 1,485,000 1,485,000 1,485,000 1,456,000 305,000 369,000 425,000 493,000 436,000 517,000 597,000 515,000 35,000 918,000 518,000 317,000 334,000 274,000 321,000 225,000 261,000 252,000 
          taxes paid
        114,000 8,000 37,000 46,000 119,000 9,000 52,000 40,000 87,000 69,000 76,000 78,000 36,000 40,000 41,000 83,000 42,000 82,000   40,000 90,000 166,000 15,000 24,000 189,000 70,000 
          net increase in cash and cash equivalents
         -18,111,000  52,980,000 -19,943,000 11,633,000                        
          adjustments to reconcile net loss to net cash from operating activities
                                     
          loss on disposal of property and equipment
                                     
          reduction in carrying value of operating right-of-use lease assets
          57,000    134,000                       
          allowance for doubtful accounts
                                     
          debt issuance costs
                                    
          loss on extinguishment of debt
                                    
          net cash flows from operating activities
                                     
          purchases of property and equipment
          -12,000    -37,000   -15,000 -6,000 1,000              
          purchases of short-term investments
              -38,925,000   -46,892,000 -1,000 -7,861,000 -12,784,000 -1,019,000 -3,997,000 -3,995,000            
          net cash flows from investing activities
                                     
          proceeds from common stock offering, net of underwriter discounts and offering costs
                                    
          proceeds from term loan
                                    
          proceeds from revenue participation agreement
                                    
          proceeds from at-the-market offering
              334,000 13,704,000         10,388,000        
          principal payments on term loan
                 -10,000,000 -2,500,000 -2,500,000 -2,500,000                
          prepayment and legal fees
                                    
          payment of term loan final fee
                                    
          payments on revenue participation agreement
                                     
          net cash flows from financing activities
                                     
          net increase in cash
                                     
          cash and cash equivalents, beginning of year
                                     
          cash and cash equivalents, end of year
                                     
          supplemental disclosure of non-cash activities
                                     
          fair value of warrants issued
                                    
          operating right-of-use asset received in exchange for lease obligations
                                   
          transfer of issuance costs from other noncurrent assets to equity
              3,000 76,000            135,000        
          proceeds from the exercise of stock options
                                     
          net decrease in cash
                                     
          cash, cash equivalents and restricted cash, beginning of year
                                     
          cash, cash equivalents and restricted cash, end of year
                                     
          net decrease in cash, cash equivalents and restricted cash
                              4,095,000 -3,911,000 -6,100,000     
          cash, cash equivalents and restricted cash at beginning of period
               71,243,000  74,450,000  72,001,000  72,806,000 89,660,000     
          cash, cash equivalents and restricted cash at end of period
               -36,308,000 -4,103,000 75,453,000  111,000 -10,452,000 51,812,000  4,354,000 -868,000 76,019,000  -34,582,000 3,521,000 75,521,000 4,095,000 -3,911,000 83,560,000     
          net increase in cash, cash equivalents and restricted cash
                -4,103,000 4,210,000  111,000 -10,452,000 -22,638,000  4,354,000 -868,000 4,018,000   3,521,000 2,715,000        
          accretion of discount (premium) on investments
                                     
          settlements of restricted stock units for tax withholding obligations
                       -81,000  -80,000 -84,000        
          accretion of discount on investments
                       5,000    46,000          
          accretion expense
                     4,000    79,000            
          payment of term loan exit fee
                                   
          proceeds from common stock offering
                           -4,000          
          supplemental non-cash information
                                     
          proceeds from term loan, net of costs
                                     
          issuance of derivative in connection with modification of term loan
                                     
          purchases of short term investments
                           -29,692,000          
          net income
                             -7,092,000   -8,719,000    -8,732,000 
          adjustments to reconcile net income to cash from operating activities
                                     
          cash and cash equivalents
                             75,339,000   83,378,000     
          restricted cash
                             182,000   182,000     
          cash, cash equivalents and restricted cash
                             75,521,000   83,560,000     
          costs related to initial public offering
                                  -4,000   
          proceeds from at-the-market offering, net of commissions
                                     
          at-the-market offering costs
                                     
          acquisition of right-of-use leased assets - operating, net of disposal
                                     
          proceeds from issuance of series b convertible preferred stock
                                     
          costs related to issuance of series b convertible preferred stock
                                     
          proceeds from issuance of convertible notes
                                     
          costs related to issuance of convertible notes
                                     
          proceeds from the early exercise of stock options
                                     
          purchase of restricted stock
                                     
          conversion of convertible preferred stock into common stock
                                     
          conversion of convertible notes into convertible preferred stock, including accrued interest
                                     
          beneficial conversion feature of convertible notes
                                     
          vesting of restricted stock
                                     
          acquisition of right-of-use leased assets - operating (type b), net of disposal
                                    
          net decrease in cash and restricted cash
                                   -8,512,000 -9,018,000 
          cash and restricted cash at beginning of period
                                   118,480,000 
          cash and restricted cash at end of period
                                   -8,512,000 109,462,000 
          net income and comprehensive loss
                                    -8,732,000 
          weighted-average shares used for eps calculation
                                    18,535,432,000 
          net income per share
                                    -470 
          fair value adjustments to series a purchase rights
                                     
          proceeds from issuance of series a convertible preferred stock
                                     
          costs related to issuance of series a convertible preferred stock
                                     
          cash and restricted cash, beginning of year
                                     
          cash and restricted cash, end of year
                                     
          reclassification of series a purchase rights to series a convertible preferred stock