10. Income taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Provision for income taxes

	For the Years Ended December 31,
	2020		2019
Current:
Federal	$	398	$	(27	)
State and local		357		276
Total current		755		249
Deferred		841		533
Provision for income taxes	$	1,596	$	782

Reconciliation to effective rate for income taxes

	2020						2019
	Amount			Percentage			Amount			Percentage
Federal income tax at statutory rate	$	1,015			21.0%		$	259			21.0%
State and local tax, net		428			8.9%			180			14.5%
Other permanent differences		12			0.3%			14			1.1%
Section 162m		296			6.1%			105			8.5%
Stock based compensation		157			3.2%			149			12.1%
Uncertain tax positions		(43	)		(0.9%	)		79			6.4%
Change in tax rates		(245	)		(5.0%	)		8			0.7%
Change in tax estimate		-			0.0%			(12	)		(1.0%	)
Other		(24	)		(0.5%	)		–			0.0%
Provision for income taxes	$	1,596			33.1%		$	782			63.3%

Schedule of deferred tax assets and liabilities

	December 31,
	2020			2019
Deferred tax liabilities attributable to:
Accumulated depreciation and amortization	$	(2,101	)	$	(2,015	)
Unrealized gains		(467	)		(465	)
Total deferred tax liabilities		(2,568	)		(2,480	)
Deferred tax assets attributable to:
Net operating losses		6			507
Accrued compensation		149			89
Incentive compensation		168			473
Inventory		323			312
Allowances for doubtful accounts and discounts		109			115
Deferred revenue		15			40
Other		34			22
Total net deferred tax assets		804			1,558
Net deferred tax liabilities	$	(1,764	)	$	(922	)

Schedule of tax attributes related to net operating losses

The following table details the Company's tax attributes related to net operating losses for which it has recorded deferred tax assets.

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

Reconciliation of amount of unrecognized tax benefits

	2020			2019
Balance at January 1	$	142		$	63
Additions based on tax positions of prior years		–			79
Reduction for tax positions of prior years		(47	)		–
Balance at December 31	$	95		$	142