General form of registration statement for all companies including face-amount certificate companies

Share-based compensation - Additional information (FY) (Details)

v3.21.1
Share-based compensation - Additional information (FY) (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 01, 2020
USD ($)
$ / shares
shares
Dec. 19, 2019
$ / shares
May 06, 2019
USD ($)
Mar. 31, 2020
USD ($)
director
shares
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
May 05, 2019
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Dec. 20, 2019
shares
Nov. 11, 2019
shares
Nov. 10, 2019
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Equity awards issued (in shares) | shares             1,300,000          
Equity awards issued, weighted average value per share (in dollars per share) | $ / shares             $ 2.47          
Share-based compensation expense as a result of immediate vesting     $ 2,200                  
Options repriced (in shares) | shares 6,077,731                      
Options repriced, exercise price premium 20.00%                      
Options repriced, exercise price (in dollars per share) | $ / shares $ 0.60                      
Options repriced, increase in fair value of vested options $ 200                      
Options repriced, increase in fair value of unvested options 200                      
Share-based compensation expense         $ 2,525 $ 2,485            
Unrecognized share-based compensation related to options               $ 2,700        
Restricted stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share-based compensation expense       $ 500                
Number of directors received awards | director       3                
Restricted stock | Non-employee directors                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Awards granted (in shares) | shares       450,000                
Restricted stock | Officer                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Awards granted (in shares) | shares       5,956                
2019 Incentive Award Plan                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Authorized issuance shares of common stock (in shares) | shares               6,000,000       6,500,000
Percent of common stock outstanding               10.00%        
2019 Incentive Award Plan | Stock options                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share-based compensation expense               $ 7,500 $ 10,300      
Amended and Restated Incentive Award Plan 2019                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Authorized issuance shares of common stock (in shares) | shares               13,500,000     9,000,000  
Percent of common stock outstanding         10.00%              
Number of awards available for issuance (in shares) | shares                   9,000,000 6,000,000  
Exercise price, lower limit (in dollars per share) | $ / shares   $ 1.82                    
Increase in fair value of vested options 600                      
Increase in fair value of unvested options $ 800                      
Minimum                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Award vesting period               2 years        
Minimum | Stock options                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Award vesting period               2 years        
Maximum                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Award vesting period               3 years        
Maximum | Stock options                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Award vesting period               3 years        
Maximum | 2019 Incentive Award Plan | Stock options                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Expiration term               10 years