Note 12 - Deposits - Schedule of Maturity of Time Deposits (Details) - USD ($)	Mar. 31, 2017	Mar. 31, 2016
Within one year	$ 124,859,888	$ 105,643,954
Over one year through two years	61,925,008	47,080,116
Over two years through three years	26,005,112	20,359,501
Over three years through four years	17,427,002	11,483,526
Over four years through five years	17,393,621
Greater than five years	22,111	10,464,315
Total time deposits	$ 247,632,742	$ 195,031,411