Detail of Selected Balance Sheet Accounts (Details 3) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite lived intangible assets
Less accumulated amortization:	$ (14,154)	$ (13,377)
Intangible assets:
Gross	24,436	24,556
Total	10,282	11,179
Customer Relationships [Member]
Finite lived intangible assets
Finite lived intangible assets, gross	18,620	18,620
Less accumulated amortization:	(14,154)	(13,377)
Tradenames [Member]
Indefinite lived intangible assets:
Gross	$ 5,816	$ 5,936