Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (11,205)	$ (26,784)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	4,200	6,308
Amortization	19	34
Stock based compensation	$ 2,322	3,199
Gain on marketable securities		(1,728)
(Gain) loss on disposal of equipment and assets held for sale	$ (6)	3,705
Changes in operating assets and liabilities:
Accounts receivable	(428)	3,789
Inventories	4,113	3,155
Prepaid expenses and other assets	(367)	(1,031)
Accounts payable	(986)	(4,720)
Accrued liabilities and other liabilities	(838)	61
Net cash used in operating activities	(3,176)	(14,012)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of plant and equipment	(136)	(774)
Proceeds from sale of equipment	$ 37	17
Proceeds from sale of marketable securities		3,528
Net cash (used in) provided by investing activities	$ (99)	2,771
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of common stock		10
Proceeds from bank borrowings	$ 8,000	10,132
Repayments of bank borrowings	$ (8,000)	(3,132)
Repayments of Restricted cash		(3,000)
Net cash provided by financing activities		4,010
Net decrease in cash and cash equivalents	$ (3,275)	(7,231)
Cash and cash equivalents at beginning of period	18,430	20,947
Cash and cash equivalents at end of period	$ 15,155	$ 13,716