Note 2 - Investment Securities (Details) - Sales/Calls of Held to Maturity Securities (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Sales/Calls of Held to Maturity Securities [Abstract]
Proceeds	$ 0	$ 0	$ 1,910	$ 0
Gross gains	0	0	0	0
Gross losses	0	0	87	0
Proceeds	45,100	90,962	90,100	160,962
Gross gains	9	15	9	19
Gross losses	$ 1	$ 0	$ 1	$ 0