Note 12 - Income Taxes (Details) - Deferred Tax Assets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for loan and lease losses	$ 6,319	$ 6,343
Discount on loans	3,492	4,511
Real estate owned	2,639	2,649
Section 382 net operating loss carry-forward	2,218	2,252
Net operating loss carry-forward	11,305	11,239
Nonaccrual loan interest	870	920
Other	785	736
Total deferred tax assets	27,628	28,650
Valuation allowance	(1,017)	(1,017)
Deferred tax asset, net of allowance	26,611	27,633
Deferred tax liabilities:
Office properties	(3,234)	(3,240)
Core deposit intangible	(2,750)	(2,810)
Unrealized gain on investments	(675)	(426)
Pension plan	(12)	(24)
Prepaid expenses	(376)	(436)
Total deferred tax liabilities	(7,047)	(6,936)
Net deferred tax asset	$ 19,564	$ 20,697