Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Cash flows from operating activities:
Net income (loss)	$ (12,276)	$ (12,314)	$ (7,594)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation and amortization	1,338	1,223	1,220
Stock-based compensation	1,979	2,003	1,676
Write-down of inventories	551	447	710
Gain on TowerJazz Semiconductor Ltd. Shares	(181)	0	0
Tax effect on other comprehensive income (loss)	273	(63)	0
Gain/loss on disposal of equipment	27	0	(8)
Write-off of equipment	96	25	102
Bad debt expense	(20)	10	0
Changes in operating assets and liabilities:
Accounts receivable	(1,999)	333	2,558
Inventories	(1,659)	289	(1,130)
Other assets	(361)	(87)	140
Trade payables	1,379	(654)	312
Accrued liabilities	1,817	140	(185)
Deferred income	0	(8)	(320)
Other long-term liabilities	(20)	(7)	24
Net cash provided by (used for) operating activities	(9,056)	(8,663)	(2,495)
Cash flows from investing activities:
Capital expenditures for property and equipment	(1,257)	(1,241)	(896)
Proceeds from sale provided by TowerJazz Semiconductor Ltd. shares	265	0	0
Net cash provided by (used in) investing activities	(992)	(1,241)	(896)
Cash flows from financing activities:
Payment of capital software lease obligations	(216)	(452)	(408)
Stock issuance cost	(2,219)	0	0
Proceeds from line of credit	1,000	0	0
Proceeds from issuance of common stock cost	26,311	12,731	2,046
Net cash provided by (used in) financing activities	24,876	12,279	1,638
Net increase/(decrease) in cash and cash equivalents	14,828	2,375	(1,753)
Cash and cash equivalents at beginning of period	22,578	20,203	21,956
Cash and cash equivalents at end of period	37,406	22,578	20,203
Supplemental disclosures of cash flow information:
Interest paid	44	50	43
Income taxes paid	100	12	21
Supplemental schedule of non-cash investing and financing activities :
Capital software lease obligation to finance capital expenditures	310	426	287
Purchase of equipment included in accounts payable	$ 33	$ 11	$ 371