CONDENSED CONSOLIDATED BALANCE SHEETS (PARANTHETICAL) (USD $)	Sep. 30, 2013	Mar. 31, 2013
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	36,601,812	36,150,639
Treasury stock, shares	551,604	551,604
Treasury stock, shares acquired, par value method	1,291,741	1,291,741