Earnings Per Share (Schedule Of Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ (6,854)	$ 7,383	$ 7,246	$ 1,441	$ (76,338)	$ 781	$ 2,593	$ (2,392)	$ 9,216	$ (75,356)	$ (39,572)
Income (loss) from discontinued operations	249	(469)	559	6,968	1,823	416	888	(18,839)	7,307	(15,712)	(12,453)
Net income (loss)	$ (6,605)	$ 6,914	$ 7,805	$ 8,409	$ (74,515)	$ 1,197	$ 3,481	$ (21,231)	$ 16,523	$ (91,068)	$ (52,025)
Weighted average shares outstanding									30,507,000	30,303,000	30,135,000
Common stock options and restricted stock									143,000
Weighted average shares and conversions									30,650,000	30,303,000	30,135,000
Anti-dilutive number of shares									993,000	1,041,000	1,222,000
Anti-dilutive share based payment arrangements, shares										157,695	193,131