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Operating Leases Minimum Future Rentals from Noncancelable Operating Leases (Details)
$ in Thousands
Dec. 31, 2014
USD ($)
Leases, Operating [Abstract]  
2015 $ 159,988
2016 144,660
2017 128,865
2018 96,844
2019 69,309
Thereafter 193,704
Total $ 793,370