Note 2 - Investment Securities (Details) - Single-Issuer Trust preferred Securities (USD $) In Thousands, unless otherwise specified			6 Months Ended											6 Months Ended																													6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Sterling Bancorp Trust I [Member]		Jun. 30, 2013 Allfirst Pfd Cap Trust Floating Rate Owned By M and T Bank Corporation [Member]		Jun. 30, 2013 Citigroup Capital Ix [Member]		Jun. 30, 2013 Citigroup Capital X [Member]		Jun. 30, 2013 Citigroup Capital XI [Member]		Jun. 30, 2013 Citigroup Capital XVI [Member]	Jun. 30, 2013 Citigroup Capital Xvii [Member]		Jun. 30, 2013 Countrywide Capital IV, Owned by Bank of America [Member]		Jun. 30, 2013 Countrywide Capital V, Owned by Bank of America [Member]		Jun. 30, 2013 First Chicago NDB Capital [Member]	Jun. 30, 2013 First Tennessee Capital Ii [Member]		Jun. 30, 2013 Goldman Sachs Capital II [Member]	Jun. 30, 2013 Goldman Sach Capital I [Member]		Jun. 30, 2013 Keycorp Capital Ii [Member]		Jun. 30, 2013 Mellon Capital IV [Member]		Jun. 30, 2013 JP Morgan Chase Capital XIII [Member]		Jun. 30, 2013 Morgan Stanley Capital Trust Iii [Member]		Jun. 30, 2013 Morgan Stanley Capital Trust IV [Member]	Jun. 30, 2013 Morgan Stanley Capital Trust V [Member]		Jun. 30, 2013 Suntrust Capital I Floating Rate [Member]		Jun. 30, 2013 USB Capital IX [Member]		Jun. 30, 2013 Vnb Capital Trust I [Member]		Jun. 30, 2013 Single Issuer Trust Preferred Securities [Member]
Note 2 - Investment Securities (Details) - Single-Issuer Trust preferred Securities [Line Items]
TARP Recipient			Yes	[1]	Yes	[1]	Yes	[1]	Yes	[1]	Yes	[1]	Yes	Yes	[1]	Yes	[1]	Yes	[1]	Yes	Yes	[1]	Yes	Yes	[1]	Yes	[1]	Yes	[1]	Yes	[1]	Yes	[1]	Yes	Yes	[1]	Yes	[1]	Yes	[1]	Yes	[1]
Credit Rating			NA		BBB		BB		BB		BB		BB	BB		BB+		BB+		BBB	BB		BB+	BB+		BBB-		BBB		BBB		BB+		BB+	BB+		BB+		BBB+		BBB-
Amortized Cost			$ 992		$ 385		$ 9,831		$ 1,256		$ 1,153		$ 9,845	$ 46		$ 9,660		$ 2,507		$ 1,724	$ 5,771		$ 852	$ 8,913		$ 93		$ 118		$ 765		$ 5,635		$ 2,880	$ 2,005		$ 741		$ 90		$ 21		$ 65,283
Available for sale securities	291,561	296,837	1,056		433		9,939		1,262		1,146		9,845	63		9,675		2,516		1,622	5,890		795	8,648		96		115		787		5,702		2,884	1,956		830		87		21		65,368
Unrealized Gain/(Loss)			$ 64		$ 48		$ 108		$ 6		$ (7)			$ 17		$ 15		$ 9		$ (102)	$ 119		$ (57)	$ (265)		$ 3		$ (3)		$ 22		$ 67		$ 4	$ (49)		$ 89		$ (3)				$ 85

[1] TARP obligation was repaid prior to June 30, 2013.