Debt Schedule of Short Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Short-term Borrowings	$ 105,173	$ 60,421
Overnight Advances from the Federal Home Loan Bank of New York [Member]
Short-term Debt [Line Items]
Short-term Borrowings	82,000	41,000
Maximum Borrowing Capacity	396,956	278,886
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Short-term Borrowings	23,173	19,421
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum Borrowing Capacity	35,000	35,000
Federal Reserve Bank of New York [Member]
Short-term Debt [Line Items]
Maximum Borrowing Capacity	$ 319,623	$ 307,159