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Future Minimum Rental Commitments for Non-Cancellable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Operating Leased Assets [Line Items]  
2014 $ 89,640
2015 86,400
2016 78,090
2017 71,910
2018 66,410
Thereafter $ 231,450