Condensed Consolidated Statements of Income (Unaudited) - USD ($)		3 Months Ended	9 Months Ended
	Jul. 01, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Net sales	$ 12,049,000	$ 12,104,000	$ 35,655,000	$ 34,082,000
Cost of goods sold, excluding depreciation and amortization	7,337,000	7,519,000	21,896,000	20,589,000
Gross profit	4,712,000	4,585,000	13,759,000	13,493,000
Operating expenses:
Selling, general and administrative	3,450,000	2,676,000	10,024,000	10,269,000
Depreciation and amortization	147,000	140,000	430,000	426,000
Total operating expenses	3,597,000	2,816,000	10,454,000	10,695,000
Income from operations	1,115,000	1,769,000	3,305,000	2,798,000
Other income:
Equity in income of unconsolidated affiliate	105,000	103,000	393,000	339,000
Gain on sale of property	385,000			385,000
Realized gain on sales of marketable securities		3,000	3,000
Unrealized gain (loss) on marketable securities		22,000	(43,000)
Interest income, net	1,000	1,000	2,000	3,000
Total other income	491,000	129,000	355,000	727,000
Income before provision for income taxes	1,606,000	1,898,000	3,660,000	3,525,000
Provision for income taxes	503,000	359,000	653,000	1,068,000
Net income	$ 1,103,000	$ 1,539,000	$ 3,007,000	$ 2,457,000
Basic earnings per common share (in dollars per share)	$ 0.07	$ 0.11	$ 0.21	$ 0.16
Diluted earnings per common share (in dollars per share)	$ 0.07	$ 0.11	$ 0.21	$ 0.16
Basic weighted average common shares outstanding (in shares)	14,732,173	13,795,007	14,031,518	14,962,606
Diluted weighted average common shares outstanding (in shares)	14,933,426	13,853,619	14,076,033	15,075,940