Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Computation of basic and diluted net loss per share [Abstract]
Net income		$ 1,197	$ 4,087
Denominator for basic earnings per share - weighted average shares		105,538,271	105,820,335
Effect of dilutive securities: Stock options, restricted stock, and warrants outstanding (in shares)	[1]	6,501,589	7,818,216
Denominator for diluted earnings per share - weighted average shares adjusted for dilutive securities		112,039,860	113,638,551
Income per common share - basic (in dollars per share)		$ 0.01	$ 0.04
Income per common share - diluted (in dollars per share)		$ 0.01	$ 0.04
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)		6,501,589	7,818,216
Outstanding Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)		5,981,250	7,392,355
Outstanding Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)		0	42,400
Restricted Stock Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)		520,339	383,461

[1] Securities outstanding that are included in the computation above, utilizing the treasury stock method are as follows: Three Months Ended March 31, 2016 2015Outstanding Stock Options5,981,250 7,392,355Outstanding Warrants— 42,400Restricted Stock Awards520,339 383,461 6,501,589 7,818,216