Weighted Average Shares Outstanding (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted average common stock outstanding	39,115	38,829	39,033		38,782
Less: weighted average unvested restricted stock outstanding	0	0	0		62
Weighted average common stock outstanding, basic (in shares)	39,115	38,829	39,033		38,720
Effect of dilutive securities:
Stock options and restricted units excluded from calculation	692	940	0	[1]	0	[1]
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average common stock outstanding, basic (in shares)	39,115	38,829	39,033		38,720
Effect of dilutive securities:
Stock options and restricted units excluded from calculation	692	940	0	[1]	0	[1]
Total weighted average shares outstanding assuming dilution (in shares)	39,807	39,769	39,033		38,720
Antidilutive shares excluded from computation of diluted net loss			746		851

[1] Due to the net loss for the six months ended June 30, 2014 and 2013, restricted stock units and common stock options representing approximately 746,000 and 851,000 shares, respectively, have been excluded from the number of shares used in calculating diluted net loss per share for the respective periods, as their inclusion would be antidilutive.