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Note 6 - Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Loans receivable $ 1,973 $ 535
Other real estate owned 1,713 4,004
Total 3,686 4,539
Fair Value, Inputs, Level 1 [Member]    
Loans receivable
Other real estate owned
Total
Fair Value, Inputs, Level 2 [Member]    
Loans receivable
Other real estate owned
Total
Fair Value, Inputs, Level 3 [Member]    
Loans receivable 1,973 535
Other real estate owned 1,713 4,004
Total $ 3,686 $ 4,539