Income taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Provision for income taxes

	For the Years Ended December 31,
	2021		2020
Current:
Federal	$	1,097	$	398
State and local		951		357
Total current		2,048		755
Deferred		257		841
Provision for income taxes	$	2,305	$	1,596

Reconciliation to effective rate for income taxes

	2021						2020
	Amount			Percentage			Amount			Percentage
Federal income tax at statutory rate	$	1,179			21.0	%	$	1,015			21.0	%
State and local tax, net		440			7.8	%		428			8.9	%
Other permanent differences		6			0.1	%		12			0.3	%
Section 162m		206			3.7	%		296			6.1	%
Stock based compensation		100			1.8	%		157			3.2	%
Uncertain tax positions		218			3.9	%		(43	)		(0.9	%)
Change in tax rates		198			3.4	%		(245	)		(5.0	%)
Other		(42	)		(0.7	%)		(24	)		(0.5	%)
Provision for income taxes	$	2,305			41.0	%	$	1,596			33.1	%

Schedule of deferred tax assets and liabilities

	December 31,
	2021			2020 (As Restated)
Deferred tax liabilities attributable to:
Accumulated depreciation and amortization	$	(3,401	)	$	(3,281	)
Unrealized gains		(473	)		(467	)
Total deferred tax liabilities		(3,874	)		(3,748	)
Deferred tax assets attributable to:
Net operating losses		6			6
Accrued compensation		170			149
Incentive compensation		164			168
Inventory		324			323
Allowances for doubtful accounts and discounts		5			109
Deferred revenue		10			15
Other		(6	)		34
Total net deferred tax assets		673			804
Net deferred tax liabilities	$	(3,201	)	$	(2,944	)

Schedule of tax attributes related to net operating losses

Tax Attributes	Gross Amount		Net Amount		Expiration Years
State net operating losses	$	116	$	6		2035
			$	6

Reconciliation of amount of unrecognized tax benefits

	2021		2020
Balance at January 1	$	95	$	142
Additions based on tax positions of prior years		301		–
Reduction for tax positions of prior years		–		(47	)
Balance at December 31	$	396	$	95