Note 21 - Disclosures Regarding Fair Value (Details) - Assets Measured at Fair Value on a Nonrecurring Basis - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Total assets measured at fair value on a nonrecurring basis	$ 213,416	$ 217,109
Fair Value, Measurements, Nonrecurring [Member]
Assets
Mortgage loans held for sale	3,178	1,125
Impaired loans	6,699	5,709
Foreclosed real estate	4,663	4,799
Total assets measured at fair value on a nonrecurring basis	14,540	11,633
Fair Value, Inputs, Level 1 [Member]
Assets
Total assets measured at fair value on a nonrecurring basis	19,313	21,644
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets
Foreclosed real estate	254	82
Total assets measured at fair value on a nonrecurring basis	254	82
Fair Value, Inputs, Level 2 [Member]
Assets
Total assets measured at fair value on a nonrecurring basis	191,985	195,465
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets
Mortgage loans held for sale	3,178	1,125
Impaired loans	6,699	5,709
Foreclosed real estate	420
Total assets measured at fair value on a nonrecurring basis	10,297	6,834
Fair Value, Inputs, Level 3 [Member]
Assets
Total assets measured at fair value on a nonrecurring basis	2,118
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets
Foreclosed real estate	3,989	4,717
Total assets measured at fair value on a nonrecurring basis	$ 3,989	$ 4,717