Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 26, 2016	Mar. 28, 2015
Net sales	$ 65,778	$ 63,447
Cost and expenses:
Cost of sales	46,337	43,302
Research and development	7,803	8,565
Selling, general and administrative	13,370	12,272
Cost and expenses	67,510	64,139
Loss from operations	(1,732)	(692)
Interest and other, net	43	6
Loss from continuing operations before taxes	(1,689)	(686)
Income tax provision	222	1,034
Loss from continuing operations	$ (1,911)	(1,720)
Loss from discontinued operations		(1,020)
Net loss	$ (1,911)	$ (2,740)
Basic:
Loss from continuing operations (in dollars per share)	$ (0.07)	$ (0.07)
Loss from discontinued operations (in dollars per share)		(0.04)
Net loss (in dollars per share)	$ (0.07)	(0.11)
Diluted:
Loss from continuing operations (in dollars per share)	$ (0.07)	(0.07)
Loss from discontinued operations (in dollars per share)		(0.04)
Net loss (in dollars per share)	$ (0.07)	$ (0.11)
Weighted average shares used in computing loss per share:
Weighted average common shares (in shares)	26,317	25,751
Diluted (in shares)	26,317	25,751
Cash dividends declared per share (in dollars per share)	$ 0.06	$ 0.06