Income Taxes - (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Income Taxes [Abstract]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	$ 12,752	$ 10,593	$ 22,359	$ 30,154
Income Tax Expense (Benefit)	$ 3,559	$ 2,992	$ 6,015	$ 8,614
Effective Income Tax Rate	27.90%	28.20%	26.90%	28.60%
Valuation Allowance, Amount	$ 1,924		$ 1,924		$ 1,924