Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Summary of Unvested Restricted Stock) (Details)

v3.3.1.900
Stock-Based Compensation (Summary of Unvested Restricted Stock) (Details)
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Number of Shares  
Unvested at beginning of period, shares | shares 498,250
Granted, shares | shares 354,000
Forfeited, shares | shares (108,000)
Expired, shares | shares (50,000)
Vested, shares | shares (333,250)
Unvested at end of period, shares | shares 361,000
Weighted Average Grant-Date Fair Value  
Unvested at beginning of period, USD per share | $ / shares $ 1.91
Granted, USD per share | $ / shares 1.73
Forfeited,USD per share | $ / shares 2.71
Expired,USD per share | $ / shares 1.93
Vested, USD per share | $ / shares 1.69
Unvested at end of period, USD per share | $ / shares $ 1.69