Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity

v3.8.0.1
Condensed Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 2018 - USD ($)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated deficit [Member]
Balance at Dec. 31, 2017 $ 170,098,000 $ 469,000 $ 529,421,000 $ (359,792,000)
Balance (in shares) at Dec. 31, 2017   46,888,108    
Cumulative effect adjustment of ASC 606 on January 1, 2018 3,663,000 $ 0 0 3,663,000
Stock based compensation expense 1,900,000 0 1,900,000 0
Vesting of restricted common stock issued to employees 172,000 0 172,000 0
Common stock issued for cash exercise of options 1,685,000 $ 3,000 1,682,000 0
Common stock issued for cash exercise of options (in shares)   267,196    
Exercise of $5.00 warrants 144,000 $ 0 144,000 0
Exercise of $5.00 warrants (in shares)   28,874    
Cashless warrant exercises 0 $ 0 0 0
Cashless warrant exercises (in shares)   48,762    
Net loss (8,463,000) $ 0 0 (8,463,000)
Balance at Mar. 31, 2018 $ 169,199,000 $ 472,000 $ 533,319,000 $ (364,592,000)
Balance (in shares) at Mar. 31, 2018   47,232,940