Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 17,109		$ 17,404
Deferred tax liability, net	67,002	$ 68,262	67,799
Accrued interest and penalties associated with release of certain unrecognized tax benefits	0		$ 0
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	188,900
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	208,000
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 600