Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 30, 2011	Mar. 25, 2011
Current assets:
Cash and cash equivalents	$ 3,832	$ 2,367
Short-term investments	31,104	56,860
Restricted cash	1,942	2,192
Accounts receivable, net of allowances of $235 at December 30, 2011 and $234 at March 25, 2011	11,637	8,701
Inventories	3,639	2,991
Prepaid expenses and other assets	4,150	5,860
Total current assets	56,304	78,971
Property and equipment, net	3,728	4,435
Other assets	4,777	5,965
Total assets	64,809	89,371
Current liabilities:
Accounts payable	3,940	5,496
Accrued liabilities	9,338	10,262
Total current liabilities	13,278	15,758
Long-term liabilities:
3.75% convertible senior notes	10,500	10,500
7.25% redeemable convertible subordinated debentures	23,704	23,704
Capital lease obligation, less current portion	82	137
Other long-term liabilities	1,474	1,097
Total long-term liabilities	35,760	35,438
Commitments and contingencies - See Notes 7 and 10
Stockholders' equity:
Preferred stock ($0.01 par value; 5,000 shares authorized; none outstanding)	0	0
Common stock ($0.01 par value; 75,000 shares authorized; 30,507 and 30,389 shares outstanding at December 30, 2011 and March 25, 2011)	305	303
Additional paid-in capital	260,783	258,339
Treasury stock, at cost	(11,783)	(11,532)
Accumulated other comprehensive loss	(2,388)	(2,108)
Accumulated deficit	(231,146)	(206,827)
Total stockholders' equity	15,771	38,175
Total liabilities and stockholders' equity	$ 64,809	$ 89,371