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Note 9 - Fair Value of Assets and Liabilities (Detail) - Assets Measured at Fair Value on a Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Estimate of Fair Value, Fair Value Disclosure [Member]
Impaired loans (collateral dependent)	$ 16,511	$ 32,903
Mortgage servicing rights	2,146	2,437
Other real estate owned	3,947	7,098
Fair Value, Inputs, Level 3 [Member]
Impaired loans (collateral dependent)	16,511	32,903
Mortgage servicing rights	2,146	2,437
Other real estate owned	$ 3,947	$ 7,098

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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- Definition

Fair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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