Annual report pursuant to Section 13 and 15(d)

COMMON STOCK - Narrative (Details)

v3.21.1
COMMON STOCK - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 08, 2021
Feb. 01, 2018
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Feb. 01, 2021
Share-based Compensation Arrangement by Share-based Payment Award            
Shares issued in connection with secondary equity offering (in shares) 15,109,489          
Proceeds from issuance of common stock $ 103,500   $ 1,335 $ 0 $ 0  
Proceeds from secondary offering, net $ 96,800   $ 96,756 $ 0 $ 0  
Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period     3 years      
Shares granted (in shares)     2,400,000 600,000 1,000,000.0  
Unrecognized compensation cost related to stock options granted     $ 11,700      
Weighted-average period for recognition (in years)     2 years      
Awards vested, fair value     $ 2,100 $ 4,000 $ 5,100  
Employee stock purchase plan            
Share-based Compensation Arrangement by Share-based Payment Award            
Shares authorized (in shares)     9,700,000      
Shares available for future equity grants (in shares)     1,077,000 1,397,000 497,000  
Common stock purchase price, percentage     85.00%      
Performance share units            
Share-based Compensation Arrangement by Share-based Payment Award            
Awards vested, fair value     $ 2,900 $ 600 $ 100  
Market (PSUs)            
Share-based Compensation Arrangement by Share-based Payment Award            
Shares granted (in shares)     900,000 1,500,000 700,000  
Unrecognized compensation cost related to stock options granted     $ 4,100      
Weighted-average period for recognition (in years)     1 year      
Market (PSUs) | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period     1 year      
Market (PSUs) | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period     3 years      
Performance PSUs            
Share-based Compensation Arrangement by Share-based Payment Award            
Shares granted (in shares)     500,000 300,000 0.0  
Unrecognized compensation cost related to stock options granted     $ 1,800      
Weighted-average period for recognition (in years)     1 year      
2012 Long-Term Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award            
Shares authorized (in shares)     5,200,000      
Shares available for future equity grants (in shares)     800,000      
Plan term     7 years      
2012 Long-Term Incentive Plan | Nonemployee director            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period     1 year      
2012 Long-Term Incentive Plan | Minimum | Employee            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period     3 years      
2012 Long-Term Incentive Plan | Maximum | Employee            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period     4 years      
2012 Long-Term Incentive Plan | Stock options, PSUs, and Restricted Shares            
Share-based Compensation Arrangement by Share-based Payment Award            
Shares outstanding (in shares)     4,400,000      
2021 Inducement Plan            
Share-based Compensation Arrangement by Share-based Payment Award            
Shares available for future equity grants (in shares)     250,000     0
2021 Inducement Plan | Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award            
Plan term   7 years        
2021 Inducement Plan | Restricted stock units | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period   2 years        
2021 Inducement Plan | Restricted stock units | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period   4 years        
2021 Inducement Plan | Stock options            
Share-based Compensation Arrangement by Share-based Payment Award            
Plan term   7 years        
2021 Inducement Plan | Stock options | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period   2 years        
2021 Inducement Plan | Stock options | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award            
Vesting period   4 years