Net Income (Loss) Per Share (Antidilutive Securities Excluded from Diluted Net Income (Loss) Per Share) (Details) - shares	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Dilutive Shares Issuable Under Purchase Contracts [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted net income (loss) per share	1,446,935	3,685,750	2,369,987	1,842,875
Time-Vesting Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted net income (loss) per share	681,938	1,156,510	636,267	1,405,556
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted net income (loss) per share	778,123	908,745	875,084	454,373
Deferred Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted net income (loss) per share	61,858		55,567