Note 17 - Employee Stock Ownership Plan - ESOP Disclosure (Details) - USD ($)	Mar. 31, 2017	Mar. 31, 2016	Oct. 31, 2012	Oct. 10, 2012
Employee Stock Ownership Plan (ESOP), Number of Allocated Shares	74,060	59,248	296,240	296,240
Unearned shares (in shares)	222,180	236,992
Total ESOP shares (in shares)	296,240	296,240
Fair value of unearned shares	$ 3,410,463	$ 3,154,364