CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)	Sep. 30, 2016	Mar. 31, 2016
Statement Of Financial Position [Abstract]
Preferred shares, shares authorized	10,000,000	10,000,000
Preferred shares, shares issued	3,677	3,677
Preferred shares, shares outstanding	3,677	3,677
Preferred shares, liquidation preference	$ 3,677,000	$ 3,677,000
Common shares, par value	$ 0.01	$ 0.01
Common shares, shares authorized	75,000,000	75,000,000
Common shares, shares issued	52,965,797	52,965,797
Common shares, shares outstanding	27,129,832	27,129,832
Treasury stock, shares	25,835,965	25,835,965