Commitments and Contingencies Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Restructuring expenses	$ 69	$ 275
Restructuring reserve	1,057	1,464	$ 1,558	$ 1,630
Employee Severance [Member]
Loss Contingencies [Line Items]
Restructuring expenses	$ 100	$ 300