Net Loss Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net (Loss) Income [Abstract]
Net (loss) income basic and diluted	$ (11,301)	$ (11,432)	$ (35,107)	$ 21,127
Weighted Average Common Shares (Denominator) Abstract
Shares outstanding, basic and diluted (in shares)	33,848	33,710	33,803
Shares outstanding, basic (in shares)	33,848	33,710	33,803	33,501
Dilutive effect of stock options				142
Dilutive effect of restricted stock				21
Shares outstanding, diluted (in shares)	33,848	33,710	33,803	33,664
Per share [Abstract]
Net income (loss) per share, basic and diluted (in dollars per share)	$ (0.33)	$ (0.34)	$ (1.04)
Net income (loss) per share, basic (in dollars per share)	$ (0.33)	$ (0.34)	$ (1.04)	$ 0.63
Net income (loss) per share, diluted (in dollars per share)	$ (0.33)	$ (0.34)	$ (1.04)	$ 0.63
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Unvested restricted stock (in shares)	28	101	28	101
Weighted Average Number (in shares)	6,068	6,195	6,087	4,126
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted Average Number (in shares)	6,035	6,186	6,019	4,126
Weighted Average Exercise Price (in dollars per share)	$ 12.22	$ 12.65	$ 12.31	$ 15.78
Restricted stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted Average Number (in shares)	33	9	68	0