CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Oct. 03, 2014	Sep. 27, 2013
Cash flows from operating activities:
Net income (loss)	$ (5,854)	$ 1,274
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation of property and equipment	1,520	1,325
Amortization of intangibles	317	334
Deferred income taxes	161	(220)
Fair value adjustment of warrant	0	(27)
Loss on disposal of property and equipment	0	172
Change in net pension liability	118	124
Stock-based compensation expense	4,736	2,924
Accretion of asset retirement obligation	3	9
Other	0	157
Changes in working capital:
Accounts receivable, net	(1,064)	(1,423)
Inventories, net	(3,191)	(707)
Prepaids, deposits and other current assets	207	(614)
Accounts payable	(17)	(389)
Other current liabilities	(1,364)	489
Net cash (used in) provided by operating activities	(4,428)	3,428
Cash flows from investing activities:
Disposal of property and equipment	68	0
Acquisition of property and equipment	(2,517)	(2,984)
Net cash used in investing activities	(2,449)	(2,984)
Cash flows from financing activities:
Repayment of capital lease obligations	(372)	(675)
Proceeds from exercise of stock options	2,793	2,723
Net cash provided by financing activities	2,421	2,048
Effect of exchange rate changes on cash and cash equivalents	(139)	(816)
Increase (decrease) in cash and cash equivalents	(4,595)	1,676
Cash and cash equivalents, at beginning of the period	22,954	21,675
Cash and cash equivalents, at end of the period	$ 18,359	$ 23,351