Intangible Assets- Amortization (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 12,571	$ 12,551
Accumulated Amortization	(7,444)	(6,895)
Net Carrying Amount	5,127	5,656
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,467	9,447
Accumulated Amortization	(4,851)	(4,457)
Net Carrying Amount	4,616	4,990
Intellectual property and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,104	3,104
Accumulated Amortization	(2,593)	(2,438)
Net Carrying Amount	$ 511	$ 666