Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Mar. 31, 2021
Condensed Consolidated Balance Sheets
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	450,000,000	450,000,000
Common stock, shares issued	51,275,609	51,071,409
Common stock, shares outstanding (net of treasury stock)	40,140,366	41,493,275
Treasury stock, shares at cost	11,135,243	9,578,134