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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Purchase Contracts [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted net income (loss) per share	3,685,750		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	1,156,510	1,832,196	1,405,556	1,839,878
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted net income (loss) per share	908,745		454,373