Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income (loss)		$ 2,347	$ (502)	$ 4,888	$ (776)
Net (income) loss allocated to participating securities		(46)	11	(92)	19
Net income (loss) allocated to common shareholders		$ 2,301	$ (491)	$ 4,796	$ (757)
Basic weighted-average common shares outstanding		32,010	27,713	31,519	27,619
Basic income (loss) per common share		$ 0.07	$ (0.02)	$ 0.15	$ (0.03)
Net (income) loss allocated to participating securities, diluted		$ (45)	$ 11	$ (90)	$ 19
Net income (loss) allocated to common shareholders, diluted		$ 2,302	$ (491)	$ 4,798	$ (757)
Effect of dilutive stock options and awards	[1]	754		751
Diluted weighted-average common shares outstanding		32,764	27,713	32,270	27,619
Diluted income (loss) per common share		$ 0.07	$ (0.02)	$ 0.15	$ (0.03)
Stock Options [Member]
Antidilutive securities excluded from computation of earnings per share		631	795	572	716
Common Stock Equivalent [Member]
Antidilutive securities excluded from computation of earnings per share			274		309

[1] The Company excluded stock options from the calculation of diluted weighted-average common shares outstanding if the per share value, including the sum of (i) the exercise price of the options and (ii) the amount of the compensation cost attributed to future services and not yet recognized, was greater than the average market price of the shares because the inclusion of these stock options would be antidilutive to income (loss) per common share. The Company also excluded common stock equivalents from stock awards from the calculation of diluted weighted-average common shares outstanding during periods of net losses because the inclusion of these common stock equivalents would be antidilutive to income (loss) per common share. Accordingly, stock options to purchase a weighted-average 631,000 and 572,000 shares for the three and six months ended June 30, 2016, respectively, and 795,000 and 716,000 shares for the three and six months ended June 30, 2015, respectively, were excluded from the calculation of diluted weighted-average common shares outstanding. Additionally, the Company excluded a weighted-average of 274,000 and 309,000 shares of common stock equivalents for outstanding stock awards for the three and six months ended June 30, 2015, respectively.