Condensed Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net sales	$ 11,415,000	$ 12,109,000	$ 23,718,000	$ 23,551,000
Cost of goods sold, excluding depreciation and amortization	7,309,000	7,390,000	14,809,000	14,377,000
Gross profit	4,106,000	4,719,000	8,909,000	9,174,000
Operating expenses:
Selling, general and administrative	3,262,000	3,468,000	6,937,000	7,349,000
Depreciation and amortization	140,000	144,000	267,000	290,000
Total operating expenses	3,402,000	3,612,000	7,204,000	7,639,000
Income from operations	704,000	1,107,000	1,705,000	1,535,000
Other income:
Equity in income of unconsolidated affiliate	84,000	151,000	361,000	290,000
Gain (loss) on marketable securities	439,000	(97,000)	609,000	(65,000)
Interest income, net	21,000	1,000	34,000	1,000
Total other income	544,000	55,000	1,004,000	226,000
Income before provision for income taxes	1,248,000	1,162,000	2,709,000	1,761,000
Provision for income taxes	238,000	203,000	481,000	294,000
Net income	$ 1,010,000	$ 959,000	$ 2,228,000	$ 1,467,000
Basic earnings per common share (in dollars per share)	$ 0.08	$ 0.07	$ 0.17	$ 0.10
Diluted earnings per common share (in dollars per share)	$ 0.08	$ 0.07	$ 0.17	$ 0.10
Basic weighted average common shares outstanding (in shares)	13,184,321	14,086,277	13,287,583	14,151,734
Diluted weighted average common shares outstanding (in shares)	13,208,138	14,127,934	13,346,146	14,219,063