Lease Financing Obligation (Details 3) (Engineering design software licenses and office space [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
Jul. 01, 2012	Jul. 03, 2011
Engineering design software licenses and office space [Member]
Operating lease rental expense
Rent expense	$ 133	$ 388

Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration