Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Expense Components [Line Items]
Income before income taxes	$ 23,487	$ 18,451
Income tax expense	7,138	6,040
Net income from continuing operations	16,349	12,411
Effective Income Tax Rate, Continuing Operations	30.40%	32.70%
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	3,452	3,036
Discontinued Operation, Tax Effect of Discontinued Operation	1,524	1,314
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	1,928	1,722
Effective Tax Rate Discontinued Operations	44.10%	43.30%
Tax effect Attributable to Noncontrolling Interests	0	0
Effective Tax Rate Noncontrolling Interests	0.00%	0.00%
Net income attributable to noncontrolling interests	1,236	930
Income from Continuing and Discontinued Operations Attributable to Parent Before Tax	25,703	20,557
Tax Expense (Benefit) Total	8,662	7,354
Net income attributable to the Company	$ 17,041	$ 13,203
Effective Tax Rate Total	33.70%	35.80%