Quarterly report pursuant to Section 13 or 15(d)

Short Term Borrowings (Details)

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Short Term Borrowings (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Short-term Debt [Line Items]    
Short Term Borrowings $ 2,007,236us-gaap_ShortTermBorrowings $ 2,397,101us-gaap_ShortTermBorrowings