Income Taxes - Significant Components of the Company's Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets
Compensation accruals	$ 2,387	$ 2,446
Inventory valuation	2,008	2,647
Allowance for uncollectible accounts	489	497
Non-deductible accruals	3,538	3,419
Operating lease liability	6,220	3,804
Finance lease liability	2,087
Non-deductible intangibles	1,473	1,669
State deferred taxes	176	451
Capital loss carryforwards	1,982	1,982
Net operating loss carryforwards	30	34
Deferred tax assets, gross	20,390	16,949
Valuation allowance	(1,982)	(1,982)
Deferred Tax Assets, Net of Valuation Allowance	18,408	14,967
Deferred income tax liabilities
Property, plant and equipment	8,983	7,925
Tax-deductible goodwill	4,937	4,623
Right of use asset - operating leases	6,150	3,759
Finance lease assets	2,051
Other	1,622	1,534
Deferred tax liabilities, gross	23,743	17,841
Net deferred income tax liability	$ (5,335)	$ (2,874)