Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Total net amortized intangible assets	$ 1,190	$ 1,440
Amortization	(235)	(250)
Total net amortized intangible assets	955	1,190
Total net intangible assets	3,627	3,877
Total net intangible assets	3,392	3,627
NLEX [Member] | Trade Name [Member]
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Unamortized intangible assets	$ 2,437	$ 2,437	$ 2,437
Customer Network [Member] | HGP [Member]
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived intangible asset, useful life	12 years	12 years
Finite-Lived intangible assets, remaining amortization period	3 years	5 years 2 months 12 days
Total net amortized intangible assets	$ 114	$ 136
Amortization	(22)	(22)
Total net amortized intangible assets	$ 92	$ 114
HGP Trade Name [Member]
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived intangible asset, useful life	14 years	14 years
Finite-Lived intangible assets, remaining amortization period	5 years	7 years 2 months 12 days
Total net amortized intangible assets	$ 746	$ 850
Amortization	(104)	(104)
Total net amortized intangible assets	$ 642	$ 746
Customer Relationships [Member] | NLEX [Member]
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived intangible asset, useful life	7 years 7 months 6 days	7 years 7 months 6 days
Finite-Lived intangible assets, remaining amortization period	2 years	3 years 1 month 6 days
Total net amortized intangible assets	$ 330	$ 440
Amortization	(109)	(110)
Total net amortized intangible assets	$ 221	$ 330
Website [Member] | NLEX [Member]
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived intangible asset, useful life		5 years
Finite-Lived intangible assets, remaining amortization period		0 years
Total net amortized intangible assets		$ 14
Amortization		$ (14)