Intangible Assets (Schedule of Company's Intangible Assets) (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Unamortized intangible assets:
Goodwill, Gross Carrying Amount	[1]	$ 14,489	$ 14,489
Goodwill, Accumulated Amortization	[1]	(227)	(227)
Total intangible assets		23,205	23,205
Accumulated Amortization		(5,306)	(4,662)
Customer Lists [Member]
Assets eligible for amortization:
Gross Carrying Amount		4,778	4,778
Accumulated Amortization		(3,793)	(3,463)
Patents [Member]
Assets eligible for amortization:
Gross Carrying Amount		72	72
Accumulated Amortization		(23)	(20)
Non-compete Agreements [Member]
Assets eligible for amortization:
Gross Carrying Amount		332	332
Accumulated Amortization		(332)	(332)
Software [Member]
Assets eligible for amortization:
Gross Carrying Amount		2,844	2,844
Accumulated Amortization		(638)	(358)
Trade Name [Member]
Assets eligible for amortization:
Gross Carrying Amount		190	190
Accumulated Amortization		(10)	(3)
Other [Member]
Assets eligible for amortization:
Gross Carrying Amount		500	500
Accumulated Amortization		$ (283)	$ (259)

[1] Amortization through December 31, 2001 prior to adoption of FASB ASC 350.