Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 51	$ 26
Allowance for doubtful accounts	109	100
Accrued vacation	61	60
Deferred buy-back asset	942	1,259
Deferred income	774	314
Right-of-use asset	53	75
Other	102	80
Gross deferred tax assets	2,092	1,914
Deferred tax liabilities:
Retainage	(284)	(424)
Deferred buy-back obligation	(846)	(1,069)
Fixed assets	(2,770)	(2,685)
Prepaids	(72)	(114)
Amortization - intangibles	(16)	(8)
Realized gain loss	6	0
Lease liability	(53)	(75)
Gross deferred tax liabilities	(4,047)	(4,375)
Valuation allowance	0	0
Net deferred tax liability	$ (1,955)	$ (2,461)