Stockholders' Equity - Additional Information (Details) - USD ($)						3 Months Ended		6 Months Ended
	Oct. 25, 2022	Oct. 26, 2021	Sep. 20, 2021	Oct. 26, 2020	Aug. 11, 2014	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Aug. 31, 2023	Mar. 31, 2023	Oct. 31, 2021	Sep. 30, 2021	Aug. 31, 2019	Aug. 31, 2017	Aug. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding stock options						923,789		923,789			1,130,813
Total share-based compensation						$ 9,466,000	$ 8,687,000	$ 17,422,000	$ 17,453,000
Stock repurchase program, authorized amount	$ 100,000,000											$ 60,000,000
Stock repurchased during period, shares								0
Stock repurchased available during period value								$ 74,303,000
Employee Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding stock options						923,789		923,789
Performance Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation costs						$ 8,457,000		$ 8,457,000
Stock option recognized over weighted average period (in years)								1 year 10 months 24 days
Performance Stock Units | Units Granted on September 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, grants in period, net of forfeitures			450,000
Weighted-average grant date fair value			$ 10.52
Performance period			5 years
Award continued service period			3 years
Shares earned and issued in period								48,667
Performance Stock Units | Units Granted On October 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, grants in period, net of forfeitures				408,861
Percentage of shares issued, minimum				8.50%
Percentage of shares issued, maximum				199.50%
Weighted-average grant date fair value				$ 16.25
Percentage of performance stock units tied to fiscal year 2022 revenue goal				80.00%
Vesting period for the 3-year total shareholder return				3 years
Percentage of performance stock units tied to fiscal year 2023 revenue goal				20.00%
Performance Stock Units | Units Granted on October 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, grants in period, net of forfeitures		476,713
Weighted-average grant date fair value		$ 13.02
Award continued service period		3 years
Shares earned and issued in period								62,668
Performance Stock Unit Awards | Units Granted on October 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based compensation						$ 2,290,000	2,172,000	$ 4,064,000	4,374,000
Share-based compensation arrangement by share-based payment award, options, grants in period, net of forfeitures	475,337
Percentage of shares issued, minimum	0.00%
Percentage of shares issued, maximum	210.00%
Weighted-average grant date fair value	$ 22.81
Vesting period for the 3-year total shareholder return	3 years
Percentage of performance stock units tied to fiscal year 2025 revenue goal	50.00%
Percentage of performance stock units tied to fiscal year 2025 EBITDA goal	50.00%
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number						3,503,524		3,503,524			3,297,512
Total share-based compensation						$ 7,067,000	6,372,000	$ 13,058,000	12,651,000
Total unrecognized compensation costs						46,335,000		$ 46,335,000
Stock option recognized over weighted average period (in years)								1 year 10 months 24 days
Stock awards vested as of vesting						$ 7,050,000	$ 7,114,000	$ 18,742,000	$ 18,205,000
Share-based compensation arrangement by share-based payment award, options, grants in period, net of forfeitures								1,436,071
Restricted Stock | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period								1 year
Restricted Stock | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period								3 years
Restricted Stock Awards and Performance Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Net share-settled upon vesting						145,073	142,751	395,048	345,263
2015 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance										2,150,000		1,850,000		3,575,000	6,000,000
Common stock reserved																11,500,000
Shares available for future grant						2,725,265		2,725,265
2015 Plan | Employee Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period (in years)								10 years
2015 Plan | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number						3,091,468		3,091,468
Inducement Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance													1,500,000
Inducement Plan | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number						412,056		412,056
Inducement Plan | Performance Stock Unit Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number						123,390		123,390
Employee Share Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance					4,000,000
Total share-based compensation						$ 109,000	$ 130,000	$ 300,000	$ 349,000
Maximum percentage of gross payroll deduction					15.00%
Purchase price as a percentage of fair market value					90.00%
Maximum shares purchase in a single transaction					1,500
Maximum amount purchased in a calendar year					$ 25,000
Shares issued						1,140,806		1,140,806