Note 5 - Loans (Details) - Allowance for Loan Losses (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Note 5 - Loans (Details) - Allowance for Loan Losses [Line Items]
Allowance for loan losses, beginning of period	$ 12,920	$ 16,485
Provision for loan losses	400us-gaap_ProvisionForLoanAndLeaseLosses
Loan charge-offs	705	476
Loan recoveries	(299)	(234)
Net loans charged-off	406	242
Allowance for loan losses, end of period	12,914	16,243
Allowance for loan losses, individually evaluated for impairment	1,440	2,470
Allowance for loan losses, collectively evaluated for impairment	11,474	13,773
Allowance for loan losses, end of period	12,914	16,243
Loans, gross, individually evaluated for impairment	28,715	43,382
Loans, gross, collectively evaluated for impairment	803,314	712,496
Loans, gross	832,029	755,878	805,059
Commercial Real Estate Loans [Member]
Note 5 - Loans (Details) - Allowance for Loan Losses [Line Items]
Allowance for loan losses, beginning of period	7,373	10,565
Provision for loan losses	62	48
Loan charge-offs	398	161
Loan recoveries	(52)	(5)
Net loans charged-off	346	156
Allowance for loan losses, end of period	7,089	10,457
Allowance for loan losses, individually evaluated for impairment	1,254	1,838
Allowance for loan losses, collectively evaluated for impairment	5,835	8,619
Allowance for loan losses, end of period	7,089	10,457
Loans, gross, individually evaluated for impairment	26,721	39,211
Loans, gross, collectively evaluated for impairment	403,377	405,942
Loans, gross	430,098	445,153	430,025
Single Family Residential [Member]
Note 5 - Loans (Details) - Allowance for Loan Losses [Line Items]
Allowance for loan losses, beginning of period	2,856	3,124
Provision for loan losses	174	(37)
Loan charge-offs	25	104
Loan recoveries	(18)	(91)
Net loans charged-off	7	13
Allowance for loan losses, end of period	3,023	3,074
Allowance for loan losses, individually evaluated for impairment	68	151
Allowance for loan losses, collectively evaluated for impairment	2,955	2,923
Allowance for loan losses, end of period	3,023	3,074
Loans, gross, individually evaluated for impairment	947	1,772
Loans, gross, collectively evaluated for impairment	216,227	174,682
Loans, gross	217,174	176,454	204,439
Commercial and Industrial [Member]
Note 5 - Loans (Details) - Allowance for Loan Losses [Line Items]
Allowance for loan losses, beginning of period	1,047	1,682
Provision for loan losses	131	(171)
Loan charge-offs	73
Loan recoveries	(135)	(12)
Net loans charged-off	(62)	(12)
Allowance for loan losses, end of period	1,240	1,523
Allowance for loan losses, individually evaluated for impairment	116	478
Allowance for loan losses, collectively evaluated for impairment	1,124	1,045
Allowance for loan losses, end of period	1,240	1,523
Loans, gross, individually evaluated for impairment	1,033	2,376
Loans, gross, collectively evaluated for impairment	95,204	70,101
Loans, gross	96,237	72,477	80,927
Consumer [Member]
Note 5 - Loans (Details) - Allowance for Loan Losses [Line Items]
Allowance for loan losses, beginning of period	1,338	1,118
Provision for loan losses	12	35
Loan charge-offs	45	56
Loan recoveries	(17)	(31)
Net loans charged-off	28	25
Allowance for loan losses, end of period	1,322	1,128
Allowance for loan losses, individually evaluated for impairment	2	3
Allowance for loan losses, collectively evaluated for impairment	1,320	1,125
Allowance for loan losses, end of period	1,322	1,128
Loans, gross, individually evaluated for impairment	14	23
Loans, gross, collectively evaluated for impairment	75,907	51,296
Loans, gross	75,921	51,319	76,984
All Other [Member]
Note 5 - Loans (Details) - Allowance for Loan Losses [Line Items]
Allowance for loan losses, beginning of period	306	(4)
Provision for loan losses	21	125
Loan charge-offs	164	155
Loan recoveries	(77)	(95)
Net loans charged-off	87	60
Allowance for loan losses, end of period	240	61
Allowance for loan losses, collectively evaluated for impairment	240	61
Allowance for loan losses, end of period	240	61
Loans, gross, collectively evaluated for impairment	12,599	10,475
Loans, gross	$ 12,599	$ 10,475	$ 12,684

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount, after recoveries, of loans and leases that have been written-off.

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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