CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 28, 2014	Mar. 29, 2013
Statement of Comprehensive Income
Sales	$ 6,672	$ 4,707
Cost of sales	4,528	3,397
Gross profit	2,144	1,310
Operating expenses:
Selling, general and administrative	1,748	1,565
Research and development	560	670
Pension	209	208
Total operating expenses	2,517	2,443
Operating loss	(373)	(1,133)
Other expense, net	(169)	(214)
Loss before income tax provision	(542)	(1,347)
Income tax provision	(9)	(10)
Net loss	(551)	(1,357)
Net loss per common share - basic and diluted	$ (0.05)	$ (0.12)
Weighted average common shares outstanding - basic and diluted	11,089	11,089
Comprehensive loss:
Net loss	(551)	(1,357)
Other comprehensive income (loss), net of tax:
Reclassification of realized gains from sale of marketable securities to net loss	0	(15)
Unrealized gain on marketable securities	0	22
Reclassification of pension expense to net loss	102	182
Other comprehensive income, net of tax	102	189
Total comprehensive loss	$ (449)	$ (1,168)

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.