COMMITMENTS AND CONTINGENCIES AND OTHER MATTERS (Details 2) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other
Securities sold under agreements to repurchase	$ 12,390,000	$ 16,897,000	$ 16,400,000
Bank
Other
Required cash balance with Federal Reserve Bank of New York	1,000,000
Average balance maintained	26,100,000
Amount available for transactions under Master Repurchase Agreement	487,500,000
Securities sold under agreements to repurchase	12,390,000
Bank | Overnight line of credit with the Federal Home Loan Bank of New York
Other
Lines of credit with unaffiliated correspondent banks to provide short-term credit	282,500,000
Lines of credit available on an unsecured basis	262,500,000
Lines of credit outstanding	$ 44,500,000