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Indebtedness - Schedule of Maturities of Long-Term Debt (Detail)
$ in Thousands
Jun. 30, 2015
USD ($)
Debt Disclosure [Abstract]  
Remainder of 2015 $ 6,162
2016 251,870
2017 168,723
2018 168,341
2019 267,423
Thereafter 487,482
Total $ 1,350,001