Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 46,665,000	$ 46,624,000
Cost of goods sold, excluding depreciation and amortization	29,693,000	28,913,000
Gross profit	16,972,000	17,711,000
Operating expenses:
Selling, general and administrative	13,348,000	13,312,000
Depreciation and amortization	602,000	525,000
Total operating expenses	13,950,000	13,837,000
Income from operations	3,022,000	3,874,000
Other income (expense):
Equity in income of unconsolidated affiliate	359,000	587,000
Gain/(loss) from marketable securities	231,000	(50,000)
Interest income, net	68,000	3,000
Total other income, net	658,000	540,000
Income before provision for income taxes	3,680,000	4,414,000
Provision for income taxes	680,000	789,000
Net income	$ 3,000,000	$ 3,625,000
Basic earnings per common share (in dollars per share)	$ 0.23	$ 0.26
Diluted earnings per common share (in dollars per share)	$ 0.23	$ 0.26
Basic weighted average common shares outstanding (in shares)	13,142,872	13,909,688
Diluted weighted average common shares outstanding (in shares)	13,168,725	13,962,819