Business Combination (Details) (BII Holding [Member], USD $) In Thousands			6 Months Ended
Oct. 02, 2011	Apr. 03, 2011 Acquisition Date Estimated Fair Value [Member]	Oct. 02, 2011 Scenario, Adjustment [Member]
Purchase price allocation
Accounts receivable	$ 19,619	$ 18,321
Prepaid and other current assets	3,896	3,896
Deferred income tax assets	15,857	15,857
Property and equipment	23,260	22,359
Intangible assets	131,800	126,900
Other non-current assets	8,765	8,884
Total assets acquired	203,197	196,217
Accounts payable	(3,977)	(3,977)
Accrued expenses	(8,461)	(8,461)
Deferred income tax liabilities	(43,824)	(43,824)
Other non-current liabilities	(11,431)	(11,431)
Long-term debt	(2,014)	(2,014)
Total liabilities assumed	(69,707)	(69,707)
Total identifiable net assets	133,490	126,510
Goodwill	276,117	283,097
Total consideration for Cornell, net of cash acquired	409,607	409,607
Measurement Period Adjustments, Accounts receivable			1,298
Measurement Period Adjustments, Property and equipment			901
Measurement Period Adjustments, Intangible assets			4,900
Measurement Period Adjustments, Other long-term assets			(119)
Measurement Period Adjustments, Assets Acquired			6,980
Measurement Period Adjustments Identifiable Net Assets			(6,980)
Measurement Period Adjustments, Goodwill			$ (6,980)

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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