CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Mar. 31, 2012
Current assets:
Cash and cash equivalents	$ 88,913	$ 69,780
Restricted cash	0	22,269
Short-term investments	56,144	106,674
Trade receivables, net of allowances of $452 and $390	31,779	32,744
Inventories	63,067	68,055
Shipped systems pending acceptance	1,007	1,360
Deferred income taxes, net	1,682	10,021
Other current assets	3,898	4,060
Total current assets	246,490	314,963
Non-current assets:
Non-current investments	12,329	23,046
Property, plant and equipment, net	27,894	32,103
Non-current deferred income taxes, net	3,766	36,489
Goodwill	7,889	4,014
Acquired intangible assets, net	9,088	8,332
Other assets	14,752	14,263
Total assets	322,208	433,210
Current liabilities:
Accounts payable	16,958	13,045
Accrued liabilities	24,930	21,635
Deferred revenue	10,196	10,751
Total current liabilities	52,084	45,431
Non-current liabilities:
Non-current income taxes payable	5,982	9,109
Commitments and Contingencies
Shareholders' equity:
Preferred stock, without par value; 1,000 shares authorized; no shares issued	0	0
Common stock, without par value; 100,000 shares authorized; 29,583 and 28,970 issued and outstanding	176,631	168,143
Retained earnings	87,228	210,021
Accumulated other comprehensive income	283	506
Total shareholders' equity	264,142	378,670
Total liabilities and shareholders' equity	$ 322,208	$ 433,210