Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax Cuts and Jobs Act of 2017, income tax expense	$ 3,200
Deferred tax asset, income tax expense	1,400
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings		$ 4,900	$ 4,600
Operating loss carryforwards	8,800	8,800
Management placed valuation allowance	$ 1,385	1,385	1,502
Income tax expense		$ 4,927	$ 6,798	$ 9,787
Effective Income Tax Rate Reconciliation, Percent		33.40%	34.50%	32.60%