Discontinued Operations (Details) (USD $)	1 Months Ended		3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2011	Feb. 28, 2011	Sep. 30, 2011	Mar. 31, 2011	Sep. 30, 2010	Mar. 31, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2007
Discontinued Operations
Pretax earnings (loss) from results			$ (4,068,000)		$ 4,425,000		$ (481,000)	$ 3,565,000
Gain on disposal, net of transaction bonus			0		0		11,056,000	7,912,000
Income tax (provision) benefit			1,615,000		(1,770,000)		(4,176,000)	(4,572,000)
Earnings (loss) on discontinued operations, net of tax			(2,453,000)		2,655,000		6,399,000	6,905,000
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			(4,068,000)		4,425,000		(481,000)	3,565,000
Pretax gains from discontinued operations related to insurance settlements	24,111,000	25,546,000		7,500,000				7,600,000
Sales revenue from discontinued operations							$ 0	$ 0