Income Taxes Unrecognized Tax Benefits Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	$ 2,250	$ 3,020	$ 3,370
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	1,900	2,500
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 1,400	$ 1,800
Minimum [Member]
Income Tax Contingency [Line Items]
Open Tax Year	2019
Maximum [Member]
Income Tax Contingency [Line Items]
Open Tax Year	2013