Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net sales	$ 68,637,000	$ 102,700,000
Cost of goods sold, excluding depreciation and amortization	43,339,000	52,218,000
Gross profit	25,298,000	50,482,000
Operating expenses:
Selling, general and administrative	16,554,000	18,171,000
Depreciation and amortization	817,000	729,000
Total operating expenses	17,371,000	18,900,000
Income from operations	7,927,000	31,582,000
Other income (expense):
Equity in income of unconsolidated affiliate	571,000	710,000
Loss on marketable securities	0	(62,000)
Interest income, net	2,000	18,000
Total other income	573,000	666,000
Income before provision for income taxes	8,500,000	32,248,000
Provision for income taxes	1,744,000	5,360,000
Net income	$ 6,756,000	$ 26,888,000
Basic earnings per common share (in dollars per share)	$ 0.51	$ 2.00
Diluted earnings per common share (in dollars per share)	$ 0.50	$ 1.92
Basic weighted average common shares outstanding (in shares)	13,225,628	13,449,987
Diluted weighted average common shares outstanding (in shares)	13,499,442	13,972,145