Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 01, 2012	Jul. 03, 2011
Cash flows from operating activities:
Net loss	$ (576)	$ (1,426)
Reconciliation of net loss to net cash used in operating activities:
Depreciation and amortization	3,042	3,520
Stock-based compensation expense	174	884
Changes in operating assets and liabilities:
Accounts receivable and accounts receivable, related party	(3,259)	(4,257)
Inventories	2,136	1,797
Other current and non-current assets	(271)	(31)
Accounts payable	681	722
Accrued compensation and related benefits	(341)	(520)
Deferred income and allowance on sales to distributors and related party distributor	(321)	2,142
Other current liabilities	(3,526)	(829)
Net cash provided by (used in) operating activities	(2,261)	2,002
Cash flows from investing activities:
Purchases of property, plant and equipment and intellectual property, net	(460)	(521)
Purchases of short-term marketable securities	(36,107)	(21,946)
Proceeds from maturities of short-term marketable securities	12,593	14,676
Proceeds from sales of short-term marketable securities	25,948	14,406
Other disposal (investment) activities	(15)	65
Net cash provided by investing activities	1,959	6,680
Cash flows from financing activities:
Proceeds from issuance of common stock	2,128	336
Payment of lease financing obligations	(315)	(705)
Net cash provided by (used in) financing activities	1,813	(369)
Net increase in cash and cash equivalents	1,511	8,313
Cash and cash equivalents at the beginning of period	8,714	15,039
Cash and cash equivalents at the end of period	10,225	23,352
Supplemental disclosure of non-cash investing and financing activities:
Return of Hillview Facility to Lessor		$ 12,167