Equity Transactions and Share-based Compensation - Narrative (Details) - USD ($)			1 Months Ended		3 Months Ended		12 Months Ended
	Jan. 01, 2023	Aug. 10, 2020	Apr. 30, 2024	Nov. 30, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2022	Feb. 29, 2024	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued for restricted stock units (in shares)					281,000	221,000
One-time employee termination benefits						$ 600,000	$ 400,000
Share-based payment arrangement, expense					$ 2,749,000	4,363,000
Independent Members Of Board
Share-based Compensation Arrangement by Share-based Payment Award
Share-based payment arrangement, expense						$ 300,000
New employees
Share-based Compensation Arrangement by Share-based Payment Award
Options granted (in shares)				950,000
New employees | Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award
Options granted (in shares)			223,000
New employees | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Expiration period					10 years
Vesting period					4 years
The 2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Evergreen option provision, equity increase (as a percent)	4.00%
Additional shares authorized (in shares)	3,500,000
Number of shares reserved for future issuance (in shares)					500,000
Shares issued pursuant to the exercise of stock options (in shares)					0	0
The 2013 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award
Additional shares authorized (in shares)	422,535
Number of shares reserved for future issuance (in shares)					1,800,000
Number of shares authorized to be granted (in shares)					4,800,000
Participation term (in months)					24 months
Percentage of pay that employee can contribute, maximum (as a percent)					15.00%
Discounted purchase price from market price, offering date (as a percent)					15.00%
Discounted purchase price from market price, purchase date (as a percent)					15.00%
Purchase interval (in months)					6 months
Shares issued pursuant to employee stock purchase plan (in shares)					419,000	308,000
Public Offering
Share-based Compensation Arrangement by Share-based Payment Award
Sale of common stock, amount authorized		$ 75,000,000						$ 250,000,000	$ 250,000,000
Sales of stock, exercise term (in years)		3 years
Sales of stock, authorization term (in years)									3 years
Public Offering | Jeffries LLC
Share-based Compensation Arrangement by Share-based Payment Award
Sale of common stock, amount authorized								$ 75,000,000