Intangible Assets - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets eligible for amortization:
Accumulated Amortization	$ (5,605)	$ (4,961)
Unamortized intangible assets:
Goodwill, gross carrying amount	14,262	14,262
Total intangible assets, net	22,646	22,646
Total intangible assets, accumulated amortization	5,605	4,961
Customer lists
Assets eligible for amortization:
Gross Carrying Amount	4,778	4,778
Accumulated Amortization	(4,231)	(3,902)
Unamortized intangible assets:
Total intangible assets, accumulated amortization	4,231	3,902
Patents
Assets eligible for amortization:
Gross Carrying Amount	72	72
Accumulated Amortization	(26)	(24)
Unamortized intangible assets:
Total intangible assets, accumulated amortization	26	24
Software
Assets eligible for amortization:
Gross Carrying Amount	2,844	2,844
Accumulated Amortization	(1,011)	(731)
Unamortized intangible assets:
Total intangible assets, accumulated amortization	1,011	731
Trade Name
Assets eligible for amortization:
Gross Carrying Amount	190	190
Accumulated Amortization	(20)	(13)
Unamortized intangible assets:
Total intangible assets, accumulated amortization	20	13
Other
Assets eligible for amortization:
Gross Carrying Amount	500	500
Accumulated Amortization	(317)	(291)
Unamortized intangible assets:
Total intangible assets, accumulated amortization	$ 317	$ 291