CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Oct. 01, 2011	Oct. 02, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 3,380	$ 7,930
Non-cash adjustments to net income:
Depreciation and amortization	984	1,161
Provision for doubtful accounts and sales returns	31	344
Provision for excess and obsolete inventories	1,475	537
Deferred income taxes	0	470
Stock-based compensation	1,422	1,577
Tax benefit related to stock-based compensation plans	6	36
Excess tax benefit related to stock-based compensation	0	(4)
Unrealized loss (gain) from short-term investments, categorized as trading	723	(184)
Changes in operating assets and liabilities:
Trade accounts receivable	(1,355)	(1,619)
Inventories	73	(4,484)
Prepaid expenses and other assets	(1,371)	814
Prepaid income taxes	58	188
Trade accounts payable and accrued expenses	289	3,047
Deferred revenue	(574)	505
Income taxes payable	(2,080)	925
Net cash provided by operating activities	3,061	11,243
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant and equipment, net	(557)	(753)
Purchases of investments	(119,566)	(90,600)
Sales of investments	53,093	16,542
Maturities and redemptions of investments	57,598	69,230
Net cash (used in) investing activities	(9,432)	(5,581)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options and employee stock purchase plan	1,288	1,032
Stock repurchases	(13,101)	0
Excess tax benefit related to stock-based compensation	0	4
Net cash (used in) provided by financing activities	(11,813)	1,036
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(18,184)	6,698
CASH AND CASH EQUIVALENTS:
Beginning of period	23,962	10,153
End of period	5,778	16,851
Supplemental cash flow disclosures:
Income taxes paid, net of refunds	$ 4,597	$ 1,067