Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Impact of tax reform	$ (3,331)	$ 10,236	$ 0
Decrease in transition tax liability on deemed repatriation	4,200
Rate change of deferreds	1,200	(3,334)	$ 0
Decrease in valuation allowance	4,800
Additional unrecognized tax benefit that would affect our annual effective tax rate	236	$ 234
Withholding taxes	3,326
Foreign tax credit
Operating Loss Carryforwards [Line Items]
Decrease in valuation allowance	4,100
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards with unlimited carryforward period	9,499
Net operating loss carryforwards expiring in 2035	5,100
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 4,602