Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 28, 2014	Mar. 29, 2013
Cash flows from operating activities:
Net loss	$ (9,031)	$ (7,130)
Adjustment to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,802	1,749
Stock incentive plan expense	506	579
Amortization and write-off of deferred loan costs	797	288
Amortization of debt discount	1,309	1,154
Payment-in-kind interest on debt	3,566	2,935
Change in fair value on warrant liability	0	2,878
Severance, impairment and other associated costs, net of cash payments	644	(537)
Other, net	921	(511)
Changes in assets and liabilities:
Accounts receivable	4,324	1,865
Inventory	498	2,445
Prepaid expenses and other current assets	521	(943)
Accounts payable and accrued expenses	(8,451)	(7,810)
Net cash used in operating activities	(2,594)	(3,038)
Cash flows from investing activities:
Capital expenditures	(951)	(1,588)
Proceeds from sale of property, plant and equipment	402	36
Net cash used in investing activities	(549)	(1,552)
Cash flows from financing activities:
Principal repayments of debt	(2,386)	0
Debt issuance costs	(1,314)	(966)
Change in restricted cash	500	(500)
Net cash used in financing activities	(3,200)	(1,466)
Net effect of exchange rate changes on cash	(4)	19
Net decrease in cash and cash equivalents	(6,347)	(6,037)
Cash and cash equivalents at beginning of period	26,902	31,475
Cash and cash equivalents at end of period	20,555	25,438
Supplemental cash flows disclosures of non-cash investing and financing:
Capital expenditures included in accounts payable and accrued liabilities	390	973
Debt issuance costs included in accounts payable and accrued liabilities	1,683	1,113
Conversion of senior convertible notes to common stock	$ 3,477	$ 0