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Fair Value of Financial Instruments (Details 2) (Auction rate securities, USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Dec. 29, 2012
Dec. 29, 2012
Dec. 31, 2011
Predecessor
Dec. 31, 2011
Predecessor
Fair Value Measurements Using Significant Unobservable Inputs        
Beginning balance $ 1,603 $ 2,004 $ 7,685 $ 8,409
Total realized/unrealized gains (loss):        
Included in earnings (229) (273) (303) (300)
Included in other comprehensive (income) loss (32) (33) 477 501
Purchases, redemptions and settlements:        
Redemptions (866) (1,222) (173) (924)
Ending balance 476 476 7,686 7,686
Unrealized gains (losses) included in other comprehensive loss        
Total amount of unrealized (losses) gains for the period included in other comprehensive loss attributable to the change in fair market value relating to assets still held at the reporting date   $ 7 $ 477 $ 501