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Borrowings - Schedule of Future Debt Maturities (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Debt Disclosure [Abstract]  
2015 $ 15,636
2016 176,412
2017 25,901
2018 300,000
2019 566,145
Thereafter 500,773
Total $ 1,584,867