Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Income Tax Expense Components [Line Items]
Income/ (loss) before income taxes					$ 50,985		$ 32,089
Income Tax Expense (Benefit), Continuing Operations					14,215		8,559
Net income/(loss) from continuing operations	15,696		10,825		36,770		23,530
Effective Income Tax Rate, Continuing Operations					27.90%		26.70%
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax					6,999		8,305
Discontinued Operation, Tax Effect of Discontinued Operation					1,183		3,495
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent					5,816		4,810
Effective Tax Rate Discontinued Operations					16.90%		42.10%
Income (Loss) Attributable to Noncontrolling Interest					2,407		2,265
Tax Effect Attributable to Noncontrolling Interests					0		0
Net income/ (loss) attributable to noncontrolling interests	855		740		2,407		2,265
Effective Tax Rate Noncontrolling Interests					0.00%		0.00%
Income from Continuing and Discontinued Operations Attributable to Parent Before Tax					55,577		38,129
Tax Expense (Benefit) Total					15,398		12,054
Net income/ (loss) attributable to the Company	$ 16,513	[1]	$ 11,679	[1]	$ 40,179	[1]	$ 26,075	[1]
Effective Tax Rate Total					27.70%		31.60%

[1] Net income from discontinued operations for the three months ended September 30, 2012, and 2011 of $1.7 million, and $1.6 million, respectively, and for the nine months ended September 30, 2012, and 2011, of $5.8 million and $4.8 million, respectively, are included in Holding Company and Eliminations in the calculation of net loss attributable to the Company.