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Note 13 - Employee Retirement Benefit Plans - Employee Stock Ownership Plan (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Allocated and committed to be allocated to participants (in shares) 33,318 31,578
Unallocated/unearned (in shares) 170,316 176,102
Total ESOP shares (in shares) 203,634 207,680
Fair value of unallocated/unearned shares $ 2,452,557 $ 2,597,501