CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income
Sales	$ 29,583	$ 24,908
Cost of sales	18,212	16,002
Gross profit	11,371	8,906
Operating expenses:
Selling, general and administrative	6,024	5,765
Research and development	2,382	2,595
Pension	965	2,115
Total operating expenses	9,371	10,475
Operating income (loss)	2,000	(1,569)
Interest expense	(729)	(712)
Other expense, net	(1)	(67)
Income (loss) before income tax (provision) benefit	1,270	(2,348)
Income tax (provision) benefit	(97)	69
Net income (loss)	1,173	(2,279)
Net income (loss) per common share - basic and diluted	$ 0.11	$ (0.21)
Weighted average common shares outstanding - basic	11,089	11,089
Weighted average common shares outstanding - diluted	11,128	11,089
Comprehensive income (loss), net of tax
Net income (loss)	1,173	(2,279)
Other comprehensive income (loss):
Reclassification of realized gains from sale of marketable securities to net income (loss)	(27)	(7)
Unrealized gain on marketable securities	20	194
Reclassification of pension expense to net income (loss)	728
Decrease (increase) to minimum pension liability	9,334	(720)
Other comprehensive income (loss)	10,055	(533)
Total comprehensive income (loss)	$ 11,228	$ (2,812)