Discontinued Operations (Details) (USD $)	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2010	Mar. 31, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2007
Discontinued Operations
Pretax earnings (loss) from results	$ (1,719,000)		$ (1,821,000)		$ 3,587,000	$ (860,000)
Gain on disposal, net of transaction bonus	0		(2,000)		11,056,000	7,912,000
Income tax (provision) benefit	682,000		346,000		(5,791,000)	(2,802,000)
Earnings (loss) on discontinued operations, net of tax	(1,037,000)		(1,477,000)		8,852,000	4,250,000
Discontinued Operations (Textuals)
Cumulative cash receipts received under ECU earn-out							150,000,000
Payments received under 5CP earn-out		12,284,000		8,794,000
Total payments received under the 5CP earn-out					54,991,000
Excess cash received under 5CP earn-out					21,890,000
Cash transaction bonus payable					1,228,000	882,000
Pretax earnings (loss) from results	(1,719,000)		(1,821,000)		3,587,000	(860,000)
Pretax gains from discontinued operations related to insurance settlements		$ 7,500,000