Income Taxes (Unrecognized Tax Benefits)[Roll Forward] (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 4,700	$ 4,200	$ 5,300
Additions for tax positions related to the current year	0	0	200
Reductions for tax positions related to the current year	0	(200)	0
Additions for tax positions of prior years	400	700	400
Reductions for tax positions of prior years	(500)	0	(1,700)
Balance at end of period	$ 4,600	$ 4,700	$ 4,200