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Other Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Future Minimum Payments Due Under Non-Cancelabe Leases [Abstract]  
Schedule of Future Minimum Payments Due Under Non-Cancelable Leases

Future minimum rents payable as of December 31, 2014 under non-cancelable leases with initial terms exceeding one year are as follows (in thousands):

2015 $ 21,945
2016   17,464
2017   12,760
2018   6,528
2019 and thereafter   17,473