Income Taxes, Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
Net operating loss carryforwards	$ 2,300
Current:
Federal	3,733	$ 6,394	$ 10,973
State	720	772	1,846
Foreign	1,207	1,165	876
Total current	5,660	8,331	13,695
Deferred:
Federal	3,487	1,057	550
State	642	170	112
Foreign	261	270	0
Total deferred	4,390	1,497	662
Total provision for income taxes	$ 10,050	$ 9,828	$ 14,357