Note 6 - Loans (Details) - Summary of Impaired Loans by Loan Class (USD $)	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 20,063,000	$ 19,989,000
Unpaid Principal Balance	28,798,000	24,820,000
Related Allowance	0	0
Recorded Investment	16,610,000	22,152,000
Unpaid Principal Balance	18,591,000	23,378,000
Related Allowance	1,802,000	4,994,000
Recorded Investment	36,673,000	42,141,000
Unpaid Principal Balance	47,389,000	48,198,000
Related Allowance	1,802,000	4,994,000
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,351,000
Unpaid Principal Balance	7,838,000
Related Allowance	0
Recorded Investment	13,000	6,590,000
Unpaid Principal Balance	13,000	6,808,000
Related Allowance	4,000	2,988,000
Recorded Investment	4,364,000	6,590,000
Unpaid Principal Balance	7,851,000	6,808,000
Related Allowance	4,000	2,988,000
Commercial Real Estate Other Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	13,799,000	15,736,000
Unpaid Principal Balance	17,683,000	18,184,000
Related Allowance	0	0
Recorded Investment	4,889,000	6,011,000
Unpaid Principal Balance	4,889,000	6,020,000
Related Allowance	602,000	814,000
Residential One To Four Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,286,000	3,714,000
Unpaid Principal Balance	2,590,000	6,091,000
Related Allowance	0	0
Recorded Investment	10,969,000	8,805,000
Unpaid Principal Balance	12,950,000	9,804,000
Related Allowance	971,000	963,000
Residential Real Estate and Home Equities [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	627,000	539,000
Unpaid Principal Balance	687,000	545,000
Related Allowance	0	0
Recorded Investment	739,000	746,000
Unpaid Principal Balance	739,000	746,000
Related Allowance	225,000	229,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	18,688,000	21,747,000
Unpaid Principal Balance	22,572,000	24,204,000
Related Allowance	602,000	814,000
Residential Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	13,621,000	13,804,000
Unpaid Principal Balance	16,966,000	17,186,000
Related Allowance	$ 1,196,000	$ 1,192,000