Note 4 - Fair Value Measurements (Details) - Assets Measured on a Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets measured on a nonrecurring basis:
Impaired loans	$ 15,287	$ 18,965
Fair Value, Inputs, Level 3 [Member]
Assets measured on a nonrecurring basis:
Impaired loans	14,029	17,158
Other real estate owned	2,392	2,698
Estimate of Fair Value Measurement [Member]
Assets measured on a nonrecurring basis:
Impaired loans	14,029	17,158
Other real estate owned	$ 2,392	$ 2,698