Share Based Awards - Summary of Non-vested Stock Option (Details) - $ / shares	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Non-Vested Number of Shares, Beginning Balance	2,657,005	2,073,295	1,859,750
Non-Vested Number of Shares Granted	326,130	1,479,000	1,146,500
Non-Vested Number of Shares Vested	(778,900)	(621,440)	(540,595)
Non-Vested Number of Shares Forfeited	(358,380)	(273,850)	(392,360)
Non-Vested Number of Shares, Ending Balance	1,845,855	2,657,005	2,073,295
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Grant-Date Fair Value per Share, Nonvested, Beginning	$ 5.18	$ 5.09	$ 4.67
Weighted-Average Grant-Date Fair Value per Share, Granted	7.18	5.59	5.00
Weighted-Average Grant-Date Fair Value per Share, Vested	5.12	4.92	3.87
Weighted-Average Grant-Date Fair Value per Share, Forfeited	5.36	4.57	4.50
Weighted-Average Grant-Date Fair Value per Share, Nonvested, Ending	$ 5.52	$ 5.18	$ 5.09