Income Taxes Income Tax Contingency (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized tax benefits at January 1,	$ 7,301	$ 7,471	$ 10,124
Tax positions, current period	1,650	495	543
Tax positions, prior period	(491)	(361)	(304)
Settlements with taxing authorities	(2,159)	(18)	(2,207)
Lapse of applicable statute of limitations	(46)	(286)	(685)
Unrecognized tax benefits at December 31,	$ 6,255	$ 7,301	$ 7,471