Note 9 - Borrowed Funds (Details) - Outstanding Advances (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Outstanding Advances [Abstract]
Within 90 days	$ 490,000	$ 475,000
Within 90 days	0.11%	0.06%
1 - 3 years	100,000
1 - 3 years	1.01%
4 - 5 years	46,200	46,200
4 - 5 years	1.24%	1.24%
	$ 636,200	$ 521,200
	0.30%	0.17%