Share-Based Compensation - Summary of Restricted Stock Awards and Performance-based Restricted Stock Unit Activity (Details)	6 Months Ended
	Jul. 31, 2021 $ / shares shares
Restricted Stock Awards
Number of Units/ Shares
Unvested, beginning of period (in shares) | shares	3,419,645
Granted (in shares) | shares	3,542,751
Vested (in shares) | shares	(1,148,003)
Forfeited (in shares) | shares	(407,836)
Unvested, end of period (in shares) | shares	5,406,557
Weighted Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share) | $ / shares	$ 3.75
Granted (in dollars per share) | $ / shares	2.84
Vested (in dollars per share) | $ / shares	4.27
Forfeited (in dollars per share) | $ / shares	2.97
Unvested, end of period (in dollars per share) | $ / shares	$ 3.09
Restricted Stock Units (RSUs)
Number of Units/ Shares
Unvested, beginning of period (in shares) | shares	163,930
Granted (in shares) | shares	500,000
Vested (in shares) | shares	(16,580)
Unvested, end of period (in shares) | shares	647,350
Weighted Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share) | $ / shares	$ 2.49
Granted (in dollars per share) | $ / shares	2.56
Vested (in dollars per share) | $ / shares	8.75
Unvested, end of period (in dollars per share) | $ / shares	$ 2.38
Performance-Based Restricted Stock Units
Number of Units/ Shares
Unvested, beginning of period (in shares) | shares	2,782,457
Granted (in shares) | shares	1,129,500
Forfeited (in shares) | shares	(204,420)
Unvested, end of period (in shares) | shares	3,707,537
Weighted Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share) | $ / shares	$ 2.04
Granted (in dollars per share) | $ / shares	2.59
Forfeited (in dollars per share) | $ / shares	2.15
Unvested, end of period (in dollars per share) | $ / shares	$ 2.20