CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Income Statement
Sales	$ 4,707	$ 7,817
Cost of sales	3,397	4,548
Gross profit	1,310	3,269
Operating expenses:
Selling, general and administrative (excluding pension)	1,565	1,472
Research and development	670	604
Pension	208	555
Total operating expenses	2,443	2,631
Operating income (loss)	(1,133)	638
Other expense, net	(214)	(217)
Income (loss) before income tax provision	(1,347)	421
Income tax provision	(10)	(61)
Net income (loss)	(1,357)	360
Net income (loss) per common share - basic and diluted	$ (0.12)	$ 0.03
Weighted average common shares outstanding - basic	11,089	11,089
Weighted average common shares outstanding - diluted	11,089	11,125
Comprehensive Income (Loss)
Net income (loss)	(1,357)	360
Other comprehensive income:
Amortization of deferred pension expense	182
Unrealized gain on marketable securities	7	168
Comprehensive income (loss)	$ (1,168)	$ 528