Weighted Average Shares Outstanding (Details)	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted average common stock outstanding	38,669,000		38,773,000		38,678,000		38,747,000
Less: weighted average unvested restricted stock outstanding	497,000		908,000		586,000		945,000
Weighted Average Number of Shares Outstanding, Basic	38,172,000		37,865,000		38,092,000		37,802,000
Effect of dilutive securities:
Stock options and restricted units excluded from calculation	426,000	[1]	206,000	[1]	336,000	[1]	0	[1]
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average common stock outstanding, basic	38,172,000		37,865,000		38,092,000		37,802,000
Effect of dilutive securities:
Stock options and restricted units excluded from calculation	426,000	[1]	206,000	[1]	336,000	[1]	0	[1]
Total weighted average shares outstanding assuming dilution	38,598,000		38,071,000		38,428,000		37,802,000
Antidilutive Securities Excluded from Computation of Earnings Per Share							146,000

[1] Due to the net loss for the nine months ended September 30, 2010, 146,000 common stock options and restricted stock units have been excluded from the number of shares used in calculating diluted loss per share, as their inclusion would be antidilutive.