Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 30, 2012
Current assets:
Cash and cash equivalents	$ 19,659	$ 22,578
Short-term investment in TowerJazz Semiconductor Ltd.	303	345
Accounts receivable, net of allowances for doubtful accounts of $51 and $20, respectively	1,392	1,242
Inventories	2,525	3,028
Other current assets	846	986
Total current assets	24,725	28,179
Property and equipment, net	2,404	2,659
Other assets	207	186
TOTAL ASSETS	27,336	31,024
Current liabilities:
Trade payables	1,393	1,965
Accrued liabilities	1,289	1,214
Current portion of capital lease obligations	239	160
Total current liabilities	2,921	3,339
Long-term liabilities:
Capital lease obligations, less current portion	135	266
Other long-term liabilities	167	141
Total liabilities	3,223	3,746
Commitments and contingencies (see Note 15)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value; 100,000 shares authorized; 44,533 and 44,506 shares issued and outstanding, respectively	45	45
Additional paid-in capital	205,259	204,797
Accumulated other comprehensive income (loss)	(54)	(11)
Accumulated deficit	(181,137)	(177,553)
Total stockholders' equity	24,113	27,278
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 27,336	$ 31,024