Condensed Consolidated Statements of Equity (Unaudited) (USD $) In Thousands	Total	Common shares in Treasury	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Non-controlling Interests
Beginning Balance at Dec. 31, 2010	$ 574,180	$ (164,257)	$ 93,436	$ 323,015	$ 362,164	$ (50,949)	$ 10,771
Beginning Balance, Shares at Dec. 31, 2010		7,242
Net (loss) income	42,812				42,279		533
Other comprehensive (loss) income	13,419					13,303	116
Cash dividends on preferred stock	(165)				(165)
Stock-based compensation transactions	5,090	10,583		(5,493)
Stock-based compensation transactions, Shares		(376)
Distributions to noncontrolling interests	(688)						(688)
Ending Balances at Jun. 30, 2011	634,648	(153,674)	93,436	317,522	404,278	(37,646)	10,732
Ending Balances, Shares at Jun. 30, 2011		6,866
Beginning Balance at Dec. 31, 2011	582,494	(153,617)	93,436	320,882	393,636	(82,075)	10,232
Beginning Balance, Shares at Dec. 31, 2011		6,865
Net (loss) income	(1,104)				(1,558)		454
Other comprehensive (loss) income	(336)					(285)	(51)
Stock-based compensation transactions	3,272	713		2,559
Stock-based compensation transactions, Shares		1
Distributions to noncontrolling interests	(380)						(380)
Ending Balances at Jun. 30, 2012	$ 583,946	$ (152,904)	$ 93,436	$ 323,441	$ 392,078	$ (82,360)	$ 10,255
Ending Balances, Shares at Jun. 30, 2012		6,866