Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Expense Components [Line Items]
Income before income taxes	$ 23,768	$ 25,327	$ 48,093	$ 51,817
Income tax expense	7,626	8,000	15,064	16,572
Net income from continuing operations	16,142	17,327	$ 33,029	$ 35,245
Effective Income Tax Rate, Continuing Operations			31.30%	32.00%
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax			$ 5,658	$ 6,227
Discontinued Operation, Tax Effect of Discontinued Operation			2,348	2,587
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	1,245	1,546	$ 3,310	$ 3,640
Effective Tax Rate Discontinued Operations			41.50%	41.50%
Tax effect Attributable to Noncontrolling Interests			$ 0	$ 0
Net income attributable to noncontrolling interests	989	1,263	$ 1,900	$ 2,492
Effective Tax Rate Noncontrolling Interests			0.00%	0.00%
Income from Continuing and Discontinued Operations Attributable to Parent Before Tax			$ 51,851	$ 55,552
Tax Expense (Benefit) Total			17,412	19,159
Net income attributable to the Company	$ 16,398	$ 17,610	$ 34,439	$ 36,393
Effective Tax Rate Total			33.60%	34.50%