Note 9 - Borrowed Funds - Borrowed Funds and Securities Sold Under Agreements to Repurchase (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 30, 2015	Dec. 31, 2014
Federal Home Loan Bank advances	$ 1,159,190	$ 1,106,658
Due in 2016	$ 0	$ 38,000
Due in 2016, weighted average interest rate	0.00%	1.92%
Due in 2017	$ 0	$ 38,000
Due in 2017, weighted average interest rate	0.00%	4.16%
Due in 2020	$ 0	$ 40,000
Due in 2020, weighted average interest rate	0.00%	3.45%
Secured Debt, Repurchase Agreements	$ 0	$ 116,000
Total repurchase agreements	0.00%	3.18%
Due in 2016	$ 0	$ 20,000
Due in 2016, weighted average interest rate	0.00%	0.56%
Due in 2026, amount	$ 73,414	$ 0
Due in 2026, weighted average interest rate	5.36%	0.00%
Due in 2037, amount	$ 33,959	$ 29,018
Due in 2037, weighted average interest rate	4.28%	5.67%
Total borrowings	$ 1,266,563	$ 1,271,676
Total borrowings, weighted average interest rate	1.53%	1.65%
Federal Home Loan Bank of New York [Member]
Due in 2016	$ 0	$ 386,152
Due in 2016, weighted average rate	0.00%	1.04%
Due in 2017	$ 550,981	$ 250,708
Due in 2017, weighted average rate	1.02%	1.29%
Due in 2018	$ 259,088	$ 265,088
Due in 2018, weighted average rate	1.27%	1.30%
Due in 2019	$ 149,112	$ 94,710
Due in 2019, weighted average rate	1.48%	1.64%
Due in 2020	$ 105,206	$ 110,000
Due in 2020, weighted average rate	1.42%	2.98%
Due in 2021	$ 94,803
Due in 2021, weighted average rate	1.47%	0.00%
Federal Home Loan Bank advances	$ 1,159,190	$ 1,106,658
Total FHLB-NY advances, weighted average rate	2.82%	3.46%	4.41%	2.98%
Federal Home Loan Bank of New York [Member] \| Weighted Average [Member]
Total FHLB-NY advances, weighted average rate	1.21%	1.40%

The weighted average interest rate on Federal Funds purchased.

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Weighted average interest rate applicable to the repurchase agreement as of the Balance Sheet date.

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No definition available.

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The weighted average interest rate applicable to the secured debt repurchase agreements which are due within one year of the Balance Sheet date.

+ References

No definition available.

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The weighted average interest rate applicable to the secured debt repurchase agreements which are due from one to two years of the Balance Sheet date.

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No definition available.

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The weighted average interest rate applicable to the secured debt repurchase agreements which are due from two to three years of the Balance Sheet date.

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Amount of advances from secured debt repurchase agreements maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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No definition available.

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Amount of advances from secured debt repurchase agreements maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from secured debt repurchase agreements maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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The weighted average interest rate on subordinated debt.

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Total amount of borrowings comprised of repurchase agreements, FHLB advances, and junior subordinated debentures.

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Weighted average interest rate of junior subordinated debentures.

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Represents the weighted average interest rate on borrowed funds.

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due after five years of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from four to five years of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due within one year of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from one to two years of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from three to four years of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from two to three years of the Balance Sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

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Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase where the transferor maintains effective control over the assets, accounting for them as secured debt.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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