Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 04, 2013	Sep. 28, 2012
Cash flows from operating activities:
Net income (loss)	$ 794	$ (22,290)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	77,219	64,359
Amortization of intangible assets	12,032	12,034
Deferred income taxes	(19,164)	(15,407)
Stock-based compensation expense	15,678	12,424
Loss on disposition of fixed assets	15,457	4,535
Other non-cash adjustments	2,492	2,370
Increase (decrease) in cash resulting from changes in operating assets and liabilities, net of effect of acquisition:
Accounts receivable	(7,929)	(20,515)
Inventories	(18,308)	(5,184)
Other assets	3,115	(5,080)
Accounts payable	20,724	5,404
Accrued liabilities	454	2,041
Other liabilities	190	7,396
Net cash provided by operating activities	102,754	42,087
Cash flows from investing activities:
Purchase of property, equipment and satellites	(160,782)	(74,652)
Cash paid for patents, licenses and other assets	(21,558)	(12,351)
Payment related to acquisition of business, net of cash acquired	(2,400)
Net cash used in investing activities	(184,740)	(87,003)
Cash flows from financing activities:
Proceeds from revolving credit facility borrowings	35,000
Payment of debt issuance costs	0	(2,215)
Proceeds from issuance of common stock under equity plans	10,921	14,055
Purchase of common stock in treasury	(679)	(2,142)
Other	(1,951)	(1,253)
Net cash provided by financing activities	43,291	8,445
Effect of exchange rate changes on cash	60	6
Net decrease in cash and cash equivalents	(38,635)	(36,465)
Cash and cash equivalents at beginning of period	105,738	172,583
Cash and cash equivalents at end of period	67,103	136,118
Non-cash investing and financing activities:
Issuance of common stock in satisfaction of certain accrued employee compensation liabilities	$ 8,018	$ 7,060