CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) - $ / shares	Mar. 31, 2018	Mar. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares outstanding	35,526,625	35,213,991
Treasury stock, shares acquired, par value method	1,291,441	1,291,441
Treasury stock, shares	2,756,419	2,756,419