Note 9 - Borrowed Funds and Securities Sold Under Agreements to Repurchase (Details) - Borrowed Funds and Securities Sold Under Agreements to Repurchase (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Repurchase agreements - fixed rate:
Amount, repurchase agreements - fixed rate	$ 155,300	$ 185,300
Weighted Average Rate, repurchase agreements - fixed rate	3.41%	3.47%
FHLB-NY advances - fixed rate:
Amount, FHLB-NY advances - fixed rate	827,252	739,183
Weighted Average Rate, FHLB-NY advances - fixed rate	1.48%	1.66%
Junior subordinated debentures - adjustable rate
Due in 2037	61,900
Total borrowings	1,012,122	948,405
Total borrowings	1.90%	2.15%
Due in 2013 [Member]
Repurchase agreements - fixed rate:
Amount, repurchase agreements - fixed rate		30,000
Weighted Average Rate, repurchase agreements - fixed rate		2.92%
Due in 2014 [Member]
Repurchase agreements - fixed rate:
Amount, repurchase agreements - fixed rate	9,300	9,300
Weighted Average Rate, repurchase agreements - fixed rate	1.27%	1.27%
Due in 2016 [Member]
Repurchase agreements - fixed rate:
Amount, repurchase agreements - fixed rate	68,000	88,000
Weighted Average Rate, repurchase agreements - fixed rate	3.27%	3.42%
Due in 2017 [Member]
Repurchase agreements - fixed rate:
Amount, repurchase agreements - fixed rate	38,000	58,000
Weighted Average Rate, repurchase agreements - fixed rate	4.16%	4.19%
Due in 2020 [Member]
Repurchase agreements - fixed rate:
Amount, repurchase agreements - fixed rate	40,000
Weighted Average Rate, repurchase agreements - fixed rate	3.45%
Due in 2013 [Member]
FHLB-NY advances - fixed rate:
Amount, FHLB-NY advances - fixed rate		142,000
Weighted Average Rate, FHLB-NY advances - fixed rate		0.40%
Due in 2014 [Member]
FHLB-NY advances - fixed rate:
Amount, FHLB-NY advances - fixed rate	89,500	129,911
Weighted Average Rate, FHLB-NY advances - fixed rate	0.63%	2.07%
Due in 2015 [Member]
FHLB-NY advances - fixed rate:
Amount, FHLB-NY advances - fixed rate	166,732	166,349
Weighted Average Rate, FHLB-NY advances - fixed rate	1.21%	1.21%
Due in 2016 [Member]
FHLB-NY advances - fixed rate:
Amount, FHLB-NY advances - fixed rate	331,062	158,636
Weighted Average Rate, FHLB-NY advances - fixed rate	1.20%	1.53%
Due in 2017 [Member]
FHLB-NY advances - fixed rate:
Amount, FHLB-NY advances - fixed rate	174,160	142,287
Weighted Average Rate, FHLB-NY advances - fixed rate	2.79%	3.24%
Due in 2018 [Member]
FHLB-NY advances - fixed rate:
Amount, FHLB-NY advances - fixed rate	65,798
Weighted Average Rate, FHLB-NY advances - fixed rate	1.24%
Due in 2037 [Member]
Junior subordinated debentures - adjustable rate
Due in 2037	$ 29,570	$ 23,922
Due in 2037	5.67%	6.92%