Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity

v3.19.1
Condensed Consolidated Statements of Stockholders' Equity - 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 6,275,000 $ 0 0 6,275,000
Stock-based compensation expense 1,900,000 0 1,900,000 0
Restricted stock-based compensation expense 172,000 0 172,000 0
Exercise of $5.00 warrants 144,000 $ 0 144,000 0
Exercise of $5.00 warrants (in shares)   28,874    
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    
cashless warrant exercises 0 $ 0 0 0
cashless warrant exercises (in shares)   48,762    
Net loss (10,530,000) $ 0 0 (10,530,000)
Balance at Mar. 31, 2018 169,744,000 $ 472,000 533,319,000 (364,047,000)
Balance (in shares) at Mar. 31, 2018   47,232,940    
Balance at Dec. 31, 2018 134,045,000 $ 479,000 543,754,000 (410,188,000)
Balance (in shares) at Dec. 31, 2018   47,944,486    
Stock-based compensation expense 2,103,000 $ 0 2,103,000 0
Restricted stock-based compensation expense 172,000 0 172,000 0
Common stock issued for cash exercise of options 28,000 $ 0 28,000 0
Common stock issued for cash exercise of options (in shares)   5,208    
Net loss (18,555,000) $ 0 0 (18,555,000)
Balance at Mar. 31, 2019 $ 117,793,000 $ 479,000 $ 546,057,000 $ (428,743,000)
Balance (in shares) at Mar. 31, 2019   47,949,694