Condensed Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net sales	$ 23,161,000	$ 18,154,000
Cost of goods sold, excluding depreciation and amortization	13,982,000	9,600,000
Gross profit	9,179,000	8,554,000
Operating expenses:
Selling, general and administrative	4,578,000	4,102,000
Depreciation and amortization	198,000	182,000
Total operating expenses	4,776,000	4,284,000
Income from operations	4,403,000	4,270,000
Other income:
Equity in income of unconsolidated affiliate	322,000	87,000
Loss on marketable securities		(59,000)
Interest income, net	1,000	16,000
Total other income	323,000	44,000
Income before provision for income taxes	4,726,000	4,314,000
Provision (benefit) for income taxes	1,007,000	(1,028,000)
Net income	$ 3,719,000	$ 5,342,000
Basic (in dollars per share)	$ 0.28	$ 0.41
Diluted (in dollars per share)	$ 0.27	$ 0.39
Basic weighted average common shares outstanding (in shares)	13,342,398	13,121,867
Diluted weighted average common shares outstanding (in shares)	13,717,404	13,664,710