Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Weighted average shares used in the computation of basic and diluted earnings (loss) per common share:
Weighted average shares used for basic earnings (loss) per common share (in shares)	55,141	54,919	55,087	54,869
Effect of dilutive stock options and restricted stock (in shares)	0	0	0	0
Weighted average shares used for diluted earnings (loss) per common share (in shares)	55,141	54,919	55,087	54,869
Stock options
Weighted average shares used in the computation of basic and diluted earnings (loss) per common share:
Shares excluded from computation of diluted earnings per common share (in shares)	1,917	2,601	1,917	2,601
Average price of shares excluded from computation of diluted earnings per share (USD per share)	9.47	9.99	9.47	9.99
Restricted stock
Weighted average shares used in the computation of basic and diluted earnings (loss) per common share:
Shares excluded from computation of diluted earnings per common share (in shares)	1,575	1,125	1,575	1,125