Condensed Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 18,154,000	$ 12,304,000
Cost of goods sold, excluding depreciation and amortization	9,600,000	7,500,000
Gross profit	8,554,000	4,804,000
Operating expenses:
Selling, general and administrative	4,102,000	3,675,000
Depreciation and amortization	182,000	127,000
Total operating expenses	4,284,000	3,802,000
Income from operations	4,270,000	1,002,000
Other income (loss):
Equity in income of unconsolidated affiliate	87,000	277,000
Gain (loss) on marketable securities	(59,000)	170,000
Interest income, net	16,000	12,000
Total other income	44,000	459,000
Income before provision (benefit) for income taxes	4,314,000	1,461,000
Provision (benefit) for income taxes	(1,028,000)	243,000
Net income	$ 5,342,000	$ 1,218,000
Basic earnings per common share (in dollars per share)	$ 0.41	$ 0.09
Diluted earnings per common share (in dollars per share)	$ 0.39	$ 0.09
Basic weighted average common shares outstanding (in shares)	13,121,867	13,391,992
Diluted weighted average common shares outstanding (in shares)	13,664,710	13,469,497