Consolidated Statements of Equity and Comprehensive Income (USD $) In Thousands, except Share data	Total	Common Stock	Paid-in Capital	Retained Earnings	Common Stock in Treasury	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest	Comprehensive Income
Beginning Balance at Mar. 28, 2008	$ 406,429	$ 3	$ 255,856	$ 149,140	$ (1,034)	$ 175	$ 2,289
Beginning Balance, shares at Mar. 28, 2008		30,500,605			(33,238)
Exercise of stock options	3,619		3,619
Exercise of stock options, shares		337,276
Stock-based compensation expense	9,837		9,837
Tax benefit from exercise of stock options and release of RSU awards	667		667
Issuance of stock under Employee Stock Purchase Plan	3,123		3,123
Issuance of stock under Employee Stock Purchase Plan, shares		182,024
RSU awards vesting, shares		94,181
Purchase of treasury shares pursuant to vesting of certain RSU agreements	(667)				(667)
Purchase of treasury shares pursuant to vesting of certain RSU agreements, shares					(33,730)
Majority-owned subsidiary stock issuance	1,500						1,500
Other noncontrolling interest activity	137						137
Net income	38,447			38,331			116	38,447
Foreign currency translation, net of tax	(302)					(302)		(302)
Comprehensive income								38,145
Ending Balance at Apr. 03, 2009	462,790	3	273,102	187,471	(1,701)	(127)	4,042
Ending Balance, shares at Apr. 03, 2009		31,114,086			(66,968)
Exercise of stock options	19,435		19,435
Exercise of stock options, shares		1,019,899
Stock-based compensation expense	12,212		12,212
Issuance of stock under Employee Stock Purchase Plan	3,650		3,650
Issuance of stock under Employee Stock Purchase Plan, shares		168,640
Shares issued in settlement of certain accrued employee compensation liabilities	5,090		5,090
Shares issued in settlement of certain accrued employee compensation liabilities, shares		192,894
RSU awards vesting, shares		234,039
Purchase of treasury shares pursuant to vesting of certain RSU agreements	(2,326)				(2,326)
Purchase of treasury shares pursuant to vesting of certain RSU agreements, shares					(88,438)
Shares issued in connection with acquisition of business, net of issuance costs	131,638	1	131,637
Shares issued in connection with acquisition of business, net of issuance costs, shares		4,286,250
Shares repurchased from Intelsat, shares					(251,731)
Shares repurchased from Intelsat	(8,000)				(8,000)
Shares issued in connection with license right obtained	303		303
Shares issued in connection with license right obtained, shares		10,000
Common stock issued under public offering, net of issuance costs	100,533		100,533
Common stock issued under public offering, net of issuance costs, shares		3,173,962
Net income	30,839			31,136			(297)	30,839
Foreign currency translation, net of tax	586					586		586
Comprehensive income								31,425
Ending Balance at Apr. 02, 2010	756,750	4	545,962	218,607	(12,027)	459	3,745
Ending Balance, shares at Apr. 02, 2010		40,199,770			(407,137)
Exercise of stock options	22,101		22,101
Exercise of stock options, shares		1,124,415
Stock-based compensation expense	17,640		17,640
Tax benefit from exercise of stock options and release of RSU awards	1,303		1,303
Issuance of stock under Employee Stock Purchase Plan	4,297		4,297
Issuance of stock under Employee Stock Purchase Plan, shares		159,940
Shares issued in settlement of certain accrued employee compensation liabilities	5,096		5,096
Shares issued in settlement of certain accrued employee compensation liabilities, shares		162,870
RSU awards vesting, shares		433,173
Purchase of treasury shares pursuant to vesting of certain RSU agreements	(5,880)				(5,880)
Purchase of treasury shares pursuant to vesting of certain RSU agreements, shares					(153,226)
Other noncontrolling interest activity	62						62
Shares issued in connection with acquisition of business, net of issuance costs	4,630		4,630
Shares issued in connection with acquisition of business, net of issuance costs, shares		144,962
Net income	36,424			36,115			309	36,424
Hedging transactions, net of tax	182					182		182
Foreign currency translation, net of tax	1,636					1,636		1,636
Comprehensive income								38,242
Ending Balance at Apr. 01, 2011	$ 844,241	$ 4	$ 601,029	$ 254,722	$ (17,907)	$ 2,277	$ 4,116
Ending Balance, shares at Apr. 01, 2011		42,225,130			(560,363)