Loans and Allowance for Loan Losses, Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 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
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 New York and Other States [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Loans [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Loans [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Loans [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Loans [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract	Sep. 30, 2013 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract	Sep. 30, 2012 New York and Other States [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract	Sep. 30, 2013 Florida [Member] Contract	Sep. 30, 2012 Florida [Member] Contract	Sep. 30, 2013 Florida [Member] Contract	Sep. 30, 2012 Florida [Member] Contract	Sep. 30, 2013 Florida [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2012 Florida [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2013 Florida [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2012 Florida [Member] Commercial [Member] Commercial Real Estate [Member] Contract	Sep. 30, 2013 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2012 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2013 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2012 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] First Mortgages [Member] Contract	Sep. 30, 2013 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract	Sep. 30, 2012 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract	Sep. 30, 2013 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract	Sep. 30, 2012 Florida [Member] Real Estate Mortgage - 1 to 4 Family [Member] Home Equity Lines of Credit [Member] Contract
Financing Receivable, Modifications [Line Items]
Charge offs on loans identified as TDR's	$ 258	$ 1,100	$ 499	$ 1,400
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts					22	116	71	141	0	2	0	2	14	73	47	94	1	14	9	17	7	27	15	28	5	10	9	14	0	0	0	0	4	8	7	12	1	2	2	2
Pre-Modification Outstanding Recorded Investment					2,257	10,933	6,807	14,197	0	166	0	166	1,461	8,807	5,579	11,845	9	485	166	605	787	1,475	1,062	1,581	599	928	1,214	1,356	0	0	0	0	536	878	1,121	1,306	63	50	93	50
Post-Modification Outstanding Recorded Investment					2,257	10,933	6,807	14,197	0	166	0	166	1,461	8,807	5,579	11,845	9	485	166	605	787	1,475	1,062	1,581	599	928	1,214	1,356	0	0	0	0	536	878	1,121	1,306	63	50	93	50
Loans modified for which there was payment default [Abstract]
Number of Contracts							10	29			0	0			6	24			1	3			3	2			1	8			0	0			1	7			0	1
Recorded Investment							$ 727	$ 3,274			$ 0	$ 0			$ 589	$ 3,042			$ 44	$ 96			$ 94	$ 136			$ 138	$ 766			$ 0	$ 0			$ 138	$ 719			$ 0	$ 47