Condensed Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net sales	$ 25,500,000	$ 11,415,000	$ 43,654,000	$ 23,718,000
Cost of goods sold, excluding depreciation and amortization	12,887,000	7,309,000	22,487,000	14,809,000
Gross profit	12,613,000	4,106,000	21,167,000	8,909,000
Operating expenses:
Selling, general and administrative	4,553,000	3,262,000	8,656,000	6,937,000
Depreciation and amortization	178,000	140,000	360,000	267,000
Total operating expenses	4,731,000	3,402,000	9,016,000	7,204,000
Income from operations	7,882,000	704,000	12,151,000	1,705,000
Other income:
Equity in income of unconsolidated affiliate	119,000	84,000	206,000	361,000
Gain (loss) on marketable securities	41,000	439,000	(18,000)	609,000
Interest income, net		21,000	16,000	34,000
Total other income	160,000	544,000	204,000	1,004,000
Income before provision for income taxes	8,042,000	1,248,000	12,355,000	2,709,000
Provision for income taxes	1,822,000	238,000	794,000	481,000
Net income	$ 6,220,000	$ 1,010,000	$ 11,561,000	$ 2,228,000
Basic earnings per common share (in dollars per share)	$ 0.47	$ 0.08	$ 0.87	$ 0.17
Diluted earnings per common share (in dollars per share)	$ 0.46	$ 0.08	$ 0.84	$ 0.17
Basic weighted average common shares outstanding (in shares)	13,351,675	13,184,321	13,351,674	13,287,583
Diluted weighted average common shares outstanding (in shares)	13,651,995	13,208,138	13,813,094	13,346,146