Note 9 - Income Taxes (Details) - Significant Temporary Differences that Comprise Deferred Tax Assets Tax Effect (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Allowance for loan losses	$ 7,217	$ 8,571
Deferred directors’ fees	285	281
Postretirement benefit obligations	4,459	5,633
Other real estate owned	3,568	2,398
Partnership investments	1,508	1,444
Self-funded insurance	213	164
Paid time off	701	705
Depreciation	798	676
Intangibles	3,179	3,526
Unrealized losses on available for sale investment securities, net	1,951	0
Other	232	44
Total deferred tax assets	24,111	23,442
Liabilities
Unrealized gains on available for sale investment securities, net	0	5,066
Prepaid expenses	596	505
Federal Home Loan Bank stock dividends	1,097	1,087
Deferred loan fees	772	811
Lease financing operations	136	366
Total deferred tax liabilities	2,601	7,835
Net deferred tax asset	$ 21,510	$ 15,607