CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Statement of Financial Position [Abstract]
Interest-earning accounts included in cash (in dollars)	$ 30,052	$ 46,245
Fair value of mortgage-backed securities held to maturity (in dollars)	43	66
Allowance for loan losses (in dollars)	$ 10,766	$ 10,528
Serial preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Serial preferred stock, shares authorized	250,000	250,000
Serial preferred stock, shares issued	0	0
Serial preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,570,179	22,510,890
Common stock, shares outstanding	22,570,179	22,510,890