Condensed Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net sales	$ 30,027,000	$ 12,027,000	$ 73,681,000	$ 35,745,000
Cost of goods sold, excluding depreciation and amortization	14,891,000	7,807,000	37,378,000	22,616,000
Gross profit	15,136,000	4,220,000	36,303,000	13,129,000
Operating expenses:
Selling, general and administrative	4,580,000	3,172,000	13,236,000	10,108,000
Depreciation and amortization	186,000	142,000	546,000	410,000
Total operating expenses	4,766,000	3,314,000	13,782,000	10,518,000
Income from operations	10,370,000	906,000	22,521,000	2,611,000
Other income:
Equity in income of unconsolidated affiliate	250,000	10,000	456,000	371,000
Gain (loss) on marketable securities	(24,000)	(387,000)	(42,000)	223,000
Interest income, net	1,000	18,000	17,000	52,000
Total other income	227,000	(359,000)	431,000	646,000
Income before provision for income taxes	10,597,000	547,000	22,952,000	3,257,000
Provision for income taxes	2,490,000	110,000	3,284,000	592,000
Net income	$ 8,107,000	$ 437,000	$ 19,668,000	$ 2,665,000
Basic earnings per common share (in dollars per share)	$ 0.60	$ 0.03	$ 1.46	$ 0.20
Diluted earnings per common share (in dollars per share)	$ 0.58	$ 0.03	$ 1.41	$ 0.20
Basic weighted average common shares outstanding (in shares)	13,588,554	13,056,173	13,431,210	13,209,598
Diluted weighted average common shares outstanding (in shares)	14,033,027	13,075,692	13,977,564	13,238,026