Note 7 - Fair Value of Assets and Liabilities (Detail) - Financial Assets Measured at Fair Value on Non-Recurring Basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Impaired loans, net	$ 2,617	$ 9,074
Other real estate owned net	5,297	6,236
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired loans, net	2,617	9,074
Other real estate owned net	$ 5,297	$ 6,236

Fair value disclosure of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned.

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