Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
Federal	$ 9,838	$ 12,433	$ 14,720
State	2,871	3,006	3,031
Current Income Tax Expense (Benefit)	12,709	15,439	17,751
Deferred
Federal	2,491	1,553	3,154
Foreign	481	(272)	0
State	1,233	277	501
Deferred Income Tax Expense (Benefit)	4,205	1,558	3,655
Income tax expense	$ 16,914	$ 16,997	$ 21,406