Income Taxes (Effective Income Tax Expense) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Statutory federal income tax rate									$ 1,180	$ 649	$ 184
State income taxes, net of federal effect									(173)	(240)	(189)
Deferred tax true-up									(4,103)	8,078	0
Change in deferred tax asset valuation allowance									4,877	(6,729)	2,094
Foreign taxes in excess of U.S. statutory rate									(712)	(223)	714
Compensation deduction limitation									113	(1,201)	381
Other, net									60	35	57
Total	$ 1,263	$ (685)	$ 460	$ 204	$ (803)	$ 421	$ 296	$ 455	$ 1,242	$ 369	$ 3,241