Intangible Assets - Company's amortizable intangible assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Amortizable intangible assets:
Gross Carrying Amount	$ 3,500	$ 3,500
Accumulated Amortization	(2,353)	(2,294)
Net	$ 1,147	1,206
Customer relationships
Amortizable intangible assets:
Weighted Average Life (Years)	15 years
Gross Carrying Amount	$ 3,500	3,500
Accumulated Amortization	(2,353)	(2,294)
Net	$ 1,147	$ 1,206