Note 13. Interest Income and Other Income, Net (Details) - Interest and Other Income, Net (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 28, 2014
Sep. 28, 2014
Jun. 29, 2014
Mar. 30, 2014
Dec. 29, 2013
Sep. 29, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Interest and Other Income, Net [Abstract]                      
Preferential claim receipts                 $ 275   $ 1,171
Gain on recovery of impaired investments                 1,831 11,237 1,059
Financing arrangement related costs                 (4,842) (8,126) (1,932)
Exchange loss                 (1,386) (1,726) (869)
Gain on ineffective hedges                    [1] 2,415 [1]    [1]
Interest income                 436 547 1,226
Release of Tessera claim accrual                     4,033
Reversal of reserve on final settlement of the bankruptcy claims                 3,205    
Gain on pension assets                 2,494    
Other income                 141 59  
Interest and other income, net $ 360 [2] $ 453 [2] $ 5,941 [2] $ (4,600) [2] $ (3,252) [2] $ 3,578 [2] $ 3,118 [2] $ 962 [2] $ 2,154 $ 4,406 $ 4,688
[1] Classified in interest income and other, net
[2] The decrease for the quarter ended December 29, 2013 is due to $5.3M higher realized, unrealized loss on foreign currency transactions in the fourth quarter of fiscal 2013