Loans and Allowance for Loan Losses, Troubled Debt Restructurings (Details) (USD $)	3 Months Ended	6 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Commercial [Member] Commercial real estate [Member]	Jun. 30, 2012 New York and other states [Member]	Jun. 30, 2012 New York and other states [Member]	Jun. 30, 2012 New York and other states [Member] Commercial [Member] Commercial real estate [Member]	Jun. 30, 2012 New York and other states [Member] Commercial [Member] Commercial real estate [Member]	Jun. 30, 2012 New York and other states [Member] Commercial [Member] Other [Member]	Jun. 30, 2012 New York and other states [Member] Commercial [Member] Other [Member]	Jun. 30, 2012 New York and other states [Member] Real estate mortgage - 1 to 4 family [Member] First mortgages [Member]	Jun. 30, 2012 New York and other states [Member] Real estate mortgage - 1 to 4 family [Member] First mortgages [Member]	Jun. 30, 2012 New York and other states [Member] Real estate mortgage - 1 to 4 family [Member] Home equity loans [Member]	Jun. 30, 2012 New York and other states [Member] Real estate mortgage - 1 to 4 family [Member] Home equity loans [Member]	Jun. 30, 2012 New York and other states [Member] Real estate mortgage - 1 to 4 family [Member] Home equity lines of credit [Member]	Jun. 30, 2012 New York and other states [Member] Real estate mortgage - 1 to 4 family [Member] Home equity lines of credit [Member]	Jun. 30, 2012 Florida [Member]	Jun. 30, 2012 Florida [Member] First mortgages [Member]	Jun. 30, 2012 Florida [Member] Commercial [Member] Commercial real estate [Member]	Jun. 30, 2012 Florida [Member] Commercial [Member] Commercial real estate [Member]	Jun. 30, 2012 Florida [Member] Commercial [Member] Other [Member]	Jun. 30, 2012 Florida [Member] Commercial [Member] Other [Member]	Jun. 30, 2012 Florida [Member] Real estate mortgage - 1 to 4 family [Member]	Jun. 30, 2012 Florida [Member] Real estate mortgage - 1 to 4 family [Member] First mortgages [Member]	Jun. 30, 2012 Florida [Member] Real estate mortgage - 1 to 4 family [Member] First mortgages [Member]
Financing Receivable, Modifications [Line Items]
TDR's amount	$ 6,200,000	$ 6,200,000	$ 5,200,000	$ 1,500,000
Chargeoffs on loans identified as TDR's	233,000	295,000
Modified loans by class that were determined to be TDR's [Abstract]
Number of Contracts					11	33	0	1	0	0	9	27	1	4	1	1	9		0	0	0	0	4	4	9
Pre-Modification Outstanding Recorded Investment					1,001,000	3,670,000	0	91,000	0	0	890,000	3,348,000	5,000	125,000	106,000	106,000	1,085,000		0	0	0	0	403,000	403,000	1,085,000
Post-Modification Outstanding Recorded Investment					964,000	3,130,000	0	90,000	0	0	853,000	2,831,000	5,000	103,000	106,000	106,000	926,000		0	0	0	0	386,000	386,000	926,000
Loans modified for which there was payment default [Abstract]
Number of Contracts					27	27	0	0	0	0	24	24	3	3	0	0	9	9	0	0	0	0
Recorded Investment					$ 2,658,000	$ 2,658,000	$ 0	$ 0	$ 0	$ 0	$ 2,560,000	$ 2,560,000	$ 98,000	$ 98,000	$ 0	$ 0	$ 926,000	$ 926,000	$ 0	$ 0	$ 0	$ 0
Deferral period of past due loans		60 months
Number of days past due when loans considered in payment default		90 days
Number of days past due, loan considered in payment default		30 days