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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Expense Components [Line Items]        
Income before income taxes $ 24,803 $ 33,456 $ 52,867 $ 55,005
Income tax expense 17,399 9,963 23,425 16,516
Net income from continuing operations 7,404 23,493 $ 29,442 $ 38,489
Effective Income Tax Rate, Continuing Operations     44.30% 30.00%
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax     $ 2,388 $ 4,606
Discontinued Operation, Tax Effect of Discontinued Operation     692 1,911
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest (2) 1,063 $ 1,696 $ 2,695
Effective Tax Rate Discontinued Operations     29.00% 41.50%
Net Income (Loss) Attributable to Noncontrolling Interest 968 1,150 $ 2,018 $ 2,116
Tax effect Attributable to Noncontrolling Interests     $ 0 $ 0
Effective Tax Rate Noncontrolling Interests     0.00% 0.00%
Income from Continuing and Discontinued Operations Attributable to Parent Before Tax     $ 53,237 $ 57,495
Tax Expense (Benefit) Total     24,117 18,427
Net income attributable to the Company $ 6,434 $ 23,406 $ 29,120 $ 39,068
Effective Tax Rate Total     45.30% 32.00%