Note 23 - Fair Value (Details) - Financial Instruments (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financial Assets:
Cash and cash equivalents	$ 74,654,000	$ 99,601,000	$ 75,816,000	$ 73,538,000
Cash and cash equivalents	74,654,000	99,601,000
FDIC insured bank certificates of deposit, carrying amount	944,000	2,927,000
FDIC insured bank certificates of deposit, estimated fair value	944,000	2,927,000
Trading account securities, carrying amount	18,000	6,000
Trading account securities, estimated fair value	18,000	6,000
Securities available for sale	343,602,000	353,678,000
Federal Home Loan Bank stock, carrying amount	7,266,000	7,266,000
Federal Home Loan Bank stock, estimated fair value	7,266,000	7,266,000
Loans held for sale, carrying amount	401,000	2,921,000
Loans held for sale, estimated fair value	401,000	2,921,000
Loans, net of allowance, carrying amount	969,149,000	942,422,000
Loans, net of allowance, estimated fair value	968,072,000	930,354,000
Financial Liabilities:
Deposits, carrying amount	(1,232,792,000)	(1,241,401,000)
Deposits, estimated fair value	(1,213,535,000)	(1,243,712,000)
Securities sold under agreements to repurchase and overnight borrowings, carrying amount	(47,635,000)	(42,785,000)
Securities sold under agreements to repurchase and overnight borrowings, estimated fair value	(47,635,000)	(42,785,000)
Federal Home Loan Bank advances, carrying amount	(19,790,000)	(22,493,000)
Federal Home Loan Bank advances, estimated fair value	(20,098,000)	(24,122,000)
Subordinated debentures, carrying amount	(36,084,000)	(36,084,000)
Subordinated debentures, estimated fair value	(21,084,000)	(36,093,000)
Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Cash and cash equivalents	74,654,000	99,601,000
FDIC insured bank certificates of deposit, carrying amount	944,000	2,927,000
FDIC insured bank certificates of deposit, estimated fair value	944,000	2,927,000
Trading account securities, estimated fair value	18,000	6,000
Securities available for sale	570,000	91,000
Federal Home Loan Bank stock, carrying amount	0	0
Federal Home Loan Bank stock, estimated fair value	0	0
Loans held for sale, estimated fair value	0	0
Loans, net of allowance, estimated fair value	0	0
Financial Liabilities:
Deposits, estimated fair value	0	0
Securities sold under agreements to repurchase and overnight borrowings, estimated fair value	0	0
Federal Home Loan Bank advances, estimated fair value	0	0
Subordinated debentures, estimated fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Cash and cash equivalents	0	0
FDIC insured bank certificates of deposit, carrying amount	0	0
FDIC insured bank certificates of deposit, estimated fair value	0	0
Trading account securities, estimated fair value	0	0
Securities available for sale	323,582,000	331,717,000
Federal Home Loan Bank stock, carrying amount	0	0
Federal Home Loan Bank stock, estimated fair value	0	0
Loans held for sale, estimated fair value	401,000	2,921,000
Loans, net of allowance, estimated fair value	0	0
Financial Liabilities:
Deposits, estimated fair value	0	0
Securities sold under agreements to repurchase and overnight borrowings, estimated fair value	(47,635,000)	(42,785,000)
Federal Home Loan Bank advances, estimated fair value	0	0
Subordinated debentures, estimated fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Cash and cash equivalents	0	0
FDIC insured bank certificates of deposit, carrying amount	0	0
FDIC insured bank certificates of deposit, estimated fair value	0	0
Trading account securities, estimated fair value	0	0
Securities available for sale	19,450,000	21,870,000
Federal Home Loan Bank stock, carrying amount	7,266,000	7,266,000
Federal Home Loan Bank stock, estimated fair value	7,266,000	7,266,000
Loans held for sale, estimated fair value	0	0
Loans, net of allowance, estimated fair value	968,072,000	930,354,000
Financial Liabilities:
Deposits, estimated fair value	(1,213,535,000)	(1,243,712,000)
Securities sold under agreements to repurchase and overnight borrowings, estimated fair value	0	0
Federal Home Loan Bank advances, estimated fair value	(20,098,000)	(24,122,000)
Subordinated debentures, estimated fair value	$ (21,084,000)	$ (36,093,000)