Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax Expense Components [Line Items]
Income before income taxes	$ 31,240	$ 30,217	$ 54,727	$ 48,668
Income tax expense	10,333	10,701	17,471	16,741
Net income from continuing operations	20,907	19,516	37,256	31,927
Effective Income Tax Rate, Continuing Operations			31.90%	34.40%
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax			6,048	7,967
Discontinued Operation, Tax Effect of Discontinued Operation			2,670	3,464
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	1,450	2,781	3,378	4,503
Effective Tax Rate Discontinued Operations			44.10%	43.50%
Tax effect Attributable to Noncontrolling Interests			0	0
Effective Tax Rate Noncontrolling Interests			0.00%	0.00%
Net income attributable to noncontrolling interests	1,025	969	2,261	1,899
Income from Continuing and Discontinued Operations Attributable to Parent Before Tax			58,514	54,736
Tax Expense (Benefit) Total			20,141	20,205
Net income attributable to the Company	$ 21,332	$ 21,328	$ 38,373	$ 34,531
Effective Tax Rate Total			34.40%	36.90%