Commitments, Contingencies and Guarantees-JV Leases (Details 1) In Thousands, unless otherwise specified				3 Months Ended								3 Months Ended														3 Months Ended
	Jul. 01, 2012 USD ($)	Jul. 01, 2012 Flash Alliance Ltd [Member] USD ($)	Jul. 01, 2012 Flash Alliance Ltd [Member] JPY (¥)	Jul. 01, 2012 Flash Alliance Ltd [Member] FAL Master Lease Agreement, 2007-11 [Member] USD ($)	Jul. 01, 2012 Flash Alliance Ltd [Member] FAL Master Lease Agreement, 2007-11 [Member] JPY (¥)	Jul. 01, 2012 Flash Alliance Ltd [Member] FAL Master Lease Agreement, 2008-06 [Member] USD ($)	Jul. 01, 2012 Flash Alliance Ltd [Member] FAL Master Lease Agreement, 2008-06 [Member] JPY (¥)	Jul. 01, 2012 Flash Alliance Ltd [Member] FAL Master Lease Agreement, 2012-03 [Member] USD ($)	Jul. 01, 2012 Flash Alliance Ltd [Member] FAL Master Lease Agreement, 2012-03 [Member] JPY (¥)	Jul. 01, 2012 Flash Partners Ltd [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] JPY (¥)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2007-03 [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2007-03 [Member] JPY (¥)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2008-02 [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2008-02 [Member] JPY (¥)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2010-04 [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2010-04 [Member] JPY (¥)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2011-01 [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2011-01 [Member] JPY (¥)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2011-11 [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2011-11 [Member] JPY (¥)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2012-03 [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] FPL Master Lease Agreement, 2012-03 [Member] JPY (¥)	Jul. 01, 2012 Flash Forward Ltd [Member] USD ($)	Jul. 01, 2012 Flash Forward Ltd [Member] JPY (¥)	Jul. 01, 2012 Flash Forward Ltd [Member] FFL Master Lease Agreement, 2011-11 [Member] USD ($)	Jul. 01, 2012 Flash Forward Ltd [Member] FFL Master Lease Agreement, 2011-11 [Member] JPY (¥)	Jul. 01, 2012 Flash Forward Ltd [Member] FFL Master Lease Agreement, 2012-03 [Member] USD ($)	Jul. 01, 2012 Flash Forward Ltd [Member] FFL Master Lease Agreement, 2012-03 [Member] JPY (¥)	Jul. 01, 2012 Flash Ventures [Member] USD ($)	Jul. 01, 2012 Flash Ventures [Member] JPY (¥)	Jan. 01, 2012 Flash Ventures [Member] USD ($)
Company's portion of the remaining guarantee obligations under each of Flash Ventures' master lease facilities
Lease Agreement Type				Original	Original	Original	Original	Original	Original			Original	Original	Original	Original	Refinanced	Refinanced	Refinanced	Refinanced	Refinanced	Refinanced	Refinanced	Refinanced			Original	Original	Original	Original
Guarantee of Flash Ventures equipment leases	$ 950,331	$ 382,919	¥ 30,400,000	$ 111,550	¥ 8,900,000	$ 151,812	¥ 12,000,000	$ 119,557	¥ 9,500,000	$ 249,709	¥ 19,900,000	$ 25,896	¥ 2,100,000	$ 20,046	¥ 1,600,000	$ 24,280	¥ 1,900,000	$ 42,358	¥ 3,400,000	$ 98,501	¥ 7,800,000	$ 38,628	¥ 3,100,000	$ 317,703	¥ 25,300,000	$ 198,191	¥ 15,800,000	$ 119,512	¥ 9,500,000	$ 950,331	¥ 75,600,000	$ 732,000
Lease Expiration (year)				Mar. 11, 2013	Mar. 11, 2013	Jul. 31, 2013	Jul. 31, 2013	Mar. 31, 2017	Mar. 31, 2017			Sep. 10, 2012	Sep. 10, 2012	Feb. 28, 2013	Feb. 28, 2013	Oct. 31, 2014	Oct. 31, 2014	Jun. 30, 2014	Jun. 30, 2014	Oct. 31, 2014	Oct. 31, 2014	May 31, 2015	May 31, 2015			Dec. 30, 2016	Dec. 30, 2016	Mar. 31, 2017	Mar. 31, 2017