Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 01, 2012	Jan. 02, 2011	Jan. 03, 2010
Cash flows from operating activities:
Net income (loss)	$ (7,594)	$ 123	$ (9,754)
Adjustments to reconcile net income (loss) to net cash (used for) operating activities:
Depreciation and amortization	1,220	1,236	1,750
Stock-based compensation	1,676	2,418	2,384
Utilization of wafer credits from TowerJazz Semiconductor Ltd.	0	(27)	443
Write-down of inventories	710	112	418
Long-lived asset impairment	0	0	150
Gain on TowerJazz Semiconductor Ltd. Shares	0	(993)	0
Tax effect on other comprehensive income	0	(209)	0
Gain/loss on disposal of equipment	(8)	18	0
Write-off of equipment	102	8	111
Bad debt expense	0	7	0
Changes in operating assets and liabilities:
Accounts receivable	2,558	(1,693)	(711)
Inventories	(1,130)	(1,337)	(637)
Other assets	140	(105)	413
Trade payables	312	(352)	456
Accrued liabilities	(185)	507	(437)
Deferred income	(320)	16	(274)
Other long-term liabilities	24	124	0
Net cash provided by (used for) operating activities	(2,495)	(147)	(5,688)
Cash flows from investing activities:
Capital expenditures for property and equipment	(896)	(829)	(124)
Proceeds from sale of equipment	0	15	0
Proceeds from sale of TowerJazz Semiconductor Ltd. Shares	0	1,084	0
Net cash provided by (used for) investing activities	(896)	270	(124)
Cash flows from financing activities:
Payment of debt and capital lease obligations	(408)	(8,389)	(9,006)
Proceeds from debt obligations	0	6,000	8,000
Proceeds from issuance of common stock	2,046	6,027	6,411
Placement agent fees and other issuance costs	0	0	(774)
Net cash provided by (used for) financing activities	1,638	3,638	4,631
Net increase (decrease) in cash and cash equivalents	(1,753)	3,761	(1,181)
Cash and Cash Equivalents at beginning of period	21,956	18,195	19,376
Cash and Cash Equivalents at end of period	20,203	21,956	18,195
Supplemental disclosures of cash flow information:
Interest paid	43	71	90
Income taxes paid	21	0	0
Supplemental schedule of non-cash investing and financing activities :
Capital lease obligation to finance capital expenditures and related maintenance	287	408	513
Purchase of equipment included in accounts payable	$ 371	$ 97	$ 273