Income Taxes (Summary of Uncertain Tax Positions Included in Income Tax Provision) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Current (provision) benefit for UTPs	$ (277)	$ (747)	$ (737)	$ (1,227)
Deferred benefit (provision) for UTPs	60	157	153	258
Tax (provision) benefit for UTPs	$ (217)	$ (590)	$ (584)	$ (969)