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Note 4 - Fair Value Disclosure Measurements (Detail) - Assets Measured on a Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets measured on a non-recurring basis:
Impaired loans	$ 19,239	$ 21,288
Fair Value, Inputs, Level 3 [Member]
Assets measured on a non-recurring basis:
Impaired loans	16,363	17,600
Other real estate owned	2,155	1,846
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets measured on a non-recurring basis:
Impaired loans	16,363	17,600
Other real estate owned	$ 2,155	$ 1,846

- Definition

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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