CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Cash flows from operating activities:
Net income	$ 471	$ 232
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation of property and equipment	369	317
Amortization of intangibles	117	175
Deferred income taxes	7	57
Fair value adjustment of warrant	(27)	14
Gain on disposal of property and equipment	(28)	0
Change in net pension liability	58	72
Stock-based compensation expense	1,034	687
Accretion of asset retirement obligation	5	0
Other	27	40
Changes in working capital:
Accounts receivable	(322)	556
Inventories	288	(432)
Prepaids, deposits and other current assets	(581)	(665)
Accounts payable	(1,328)	(1,100)
Other current liabilities	(522)	(390)
Net cash used in operating activities	(432)	(437)
Cash flows from investing activities:
Release of restricted cash	0	129
Acquisition of property and equipment	(1,218)	(287)
Net cash used in investing activities	(1,218)	(158)
Cash flows from financing activities:
Repayment of capital lease obligations	(242)	(195)
Proceeds from exercise of stock options	23	837
Net cash (used in) provided by financing activities	(219)	642
Effect of exchange rate changes on cash and cash equivalents	(563)	(184)
Decrease in cash and cash equivalents	(2,432)	(137)
Cash and cash equivalents, at beginning of the period	21,675	16,582
Cash and cash equivalents, at end of the period	$ 19,243	$ 16,445