Note 6 - Premises and Equipment, net (Details) - Premises and Equipment Balances (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 48,505	$ 48,515
Accumulated depreciation	(24,453)	(23,719)
Premises and equipment, net	24,052	24,796
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	5,521	5,581
Building [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	19,658	19,541
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	3,740	4,309
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	12,928	12,640
Software [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	5,185	4,971
Bank Automobiles [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	95	95
Capital Lease Asset [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 1,378	$ 1,378