Income Taxes Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning	$ 3,020	$ 3,370
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	110	60
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	0	390
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	0	0
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	0	0
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(880)	(800)
Unrecognized Tax Benefits, Ending	$ 2,250	$ 3,020