Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income (loss)	$ (9,087)	$ (9,755)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation and amortization	952	907
Stock-based compensation	1,067	1,419
Write-down of inventories	379	428
Gain on sale of TowerJazz Semiconductor Ltd. Shares	(181)	0
(Gains) losses on disposal of equipment	27	0
Write-off of equipment	3	25
Tax effect on other comprehensive income	273	(63)
Allowance for doubtful accounts	(20)	10
Changes in operating assets and liabilities:
Accounts receivable	(3,733)	240
Inventories	(202)	820
Other assets	350	(68)
Trade payables	862	(1,296)
Accrued liabilities	1,396	714
Other long-term liabilities	(27)	(1)
Net cash provided by (used for) operating activities	(7,941)	(6,620)
Cash flows from investing activities:
Capital expenditures for property and equipment	(1,207)	(814)
Proceeds from sale of TowerJazz Semiconductor Ltd. Shares	265	0
Net cash provided by (used for) investing activities	(942)	(814)
Cash flows from financing activities:
Payment of debt and capital lease obligations	(182)	(311)
Stock issuance cost	(70)	0
Proceeds from debt obligations	1,000	0
Net proceeds from issuance of common stock	428	12,490
Net cash provided by (used for) financing activities	1,176	12,179
Net increase (decrease) in cash and cash equivalents	(7,707)	4,745
Cash and cash equivalents at beginning of period	22,578	20,203
Cash and cash equivalents at end of period	14,871
Supplemental schedule of non-cash investing and financing activities :
Capital lease obligation to finance capital expenditures	194	721
Purchase of equipment included in accounts payable	$ 123	$ 1