Debt Schedule of Short Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Short-term Debt [Line Items]
Short-term Borrowings	$ 41,678	$ 68,293
Overnight Advances from the Federal Home Loan Bank of New York [Member]
Short-term Debt [Line Items]
Short-term Borrowings	29,000	42,000
Maximum Borrowing Capacity	90,000	114,000
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Short-term Borrowings	12,678	26,293
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum Borrowing Capacity	30,000	30,000
Federal Reserve Bank of New York [Member]
Short-term Debt [Line Items]
Maximum Borrowing Capacity	$ 268,000	$ 244,000