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Deferred Revenue
 6 Months Ended
Sep. 28, 2013
Deferred Revenue Disclosure [Abstract]  
Deferred Revenue
Deferred Revenue

Generally, revenue is recognized upon fulfillment of acceptance criteria at the Company's factory and title transfer, which frequently occurs at the time of delivery to a common carrier. Revenue is deferred whenever title transfer is pending and/or acceptance criteria have not yet been fulfilled. Deferred revenue occurrences include sales to Japanese customers, shipments of substantially new products and shipments with custom specifications and acceptance criteria. In sales involving multiple element arrangements, the relative selling price of any undelivered elements, including installation services, is deferred until the elements are delivered and acceptance criteria are met. Revenue related to maintenance and service contracts is deferred and recognized ratably over the duration of the contracts.
The following is a reconciliation of the changes in deferred revenue:
 
Fiscal quarter ended
 
Two fiscal quarters ended
(In thousands)
Sep 27, 2014
 
Sep 28, 2013
 
Sep 27, 2014
 
Sep 28, 2013
Deferred revenue, beginning
$
12,268

 
$
10,766

 
$
10,515

 
$
10,196

Revenue deferred
15,141

 
6,657

 
26,949

 
13,598

Revenue recognized
(10,969
)
 
(9,568
)
 
(21,024
)
 
(15,939
)
Deferred revenue, ending
$
16,440

 
$
7,855

 
$
16,440

 
$
7,855