Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity (Unaudited)

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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - 3 months ended Mar. 31, 2017 - USD ($)
Common Stock [Member]
Common Stock [Member]
Employees and Directors [Member]
Additional paid-in capital [Member]
Additional paid-in capital [Member]
Employees and Directors [Member]
Accumulated deficit [Member]
Accumulated deficit [Member]
Employees and Directors [Member]
Total
Employees and Directors [Member]
Balance at Dec. 31, 2016 $ 403,000   $ 431,168,000   $ (332,473,000)   $ 99,098,000  
Balance (in shares) at Dec. 31, 2016 40,254,457              
Restricted common stock issued   $ 0   $ 362,000   $ 0   $ 362,000
Restricted common stock issued (in shares)   0            
Common stock issued for cash exercise of options $ 0   1,000   0   1,000  
Common stock issued for cash exercise of options (in shares)   625            
Stock based compensation expense 0   1,492,000   0   1,492,000  
Net loss 0   0   (5,247,000)   (5,247,000)  
Balance at Mar. 31, 2017 $ 403,000   $ 433,023,000   $ (337,720,000)   $ 95,706,000  
Balance (in shares) at Mar. 31, 2017 40,255,082