CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2015	Jul. 04, 2014
Cash flows from operating activities:
Net loss	$ (3,938)	$ (3,148)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property, plant and equipment	996	981
Amortization of intangibles	103	213
Deferred income taxes	(35)	57
Change in net pension liability	95	83
Stock-based compensation expense	1,823	3,183
Accretion of asset retirement obligation	0	2
Provision for sales returns and bad debts	243	1
Changes in working capital:
Accounts receivable	(1,732)	(1,895)
Inventories	1,669	(2,093)
Prepaids, deposits and other current assets	606	(20)
Accounts payable	(1,994)	(874)
Other current liabilities	759	(554)
Net cash used in operating activities	(1,405)	(4,064)
Cash flows from investing activities:
Acquisition of property, plant, and equipment	(701)	(2,269)
Cash proceeds from sale of property and equipment	2	68
Net cash used in investing activities	(699)	(2,201)
Cash flows from financing activities:
Repayment of capital lease obligations	(210)	(251)
Proceeds from exercise of stock options	1,896	2,632
Proceeds from exercise of warrants	2,800	0
Net cash provided by financing activities	4,486	2,381
Effect of exchange rate changes on cash and cash equivalents	(60)	116
Increase (decrease) in cash and cash equivalents	2,322	(3,768)
Cash and cash equivalents, at beginning of the period	13,013	22,954
Cash and cash equivalents, at end of the period	$ 15,335	$ 19,186