CONDENSED CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) - $ / shares	Dec. 31, 2018	Mar. 31, 2018
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares outstanding	35,798,185	35,526,625
Treasury stock, shares acquired, par value method	1,291,441	1,291,441
Treasury stock, shares acquired, cost method	2,756,419	2,756,419