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Stock-Based Compensation, Summary (Details) - shares
3 Months Ended 12 Months Ended
Nov. 18, 2021
Apr. 06, 2020
Dec. 24, 2019
Mar. 31, 2022
Dec. 31, 2019
Dec. 31, 2018
Jun. 20, 2019
Apr. 20, 2017
2019 Plan [Member] | Employee [Member]                
Stock-Based Compensation [Abstract]                
Number of shares authorized for issuance (in shares)             780,000  
Future awards life       10 years        
Number of shares available for grant (in shares)       297,786        
2016 Plan [Member] | Employee [Member]                
Stock-Based Compensation [Abstract]                
Number of shares authorized for issuance (in shares)               299,628
Future awards life       10 years        
Number of shares available for grant (in shares)       29,712        
Shares granted (in shares)           0    
2019 Plan and 2016 Plan [Member] | Employee [Member] | Minimum [Member]                
Stock-Based Compensation [Abstract]                
Vesting period       1 year        
2019 Plan and 2016 Plan [Member] | Employee [Member] | Maximum [Member]                
Stock-Based Compensation [Abstract]                
Future awards life       10 years        
Vesting period       5 years        
Restricted Stock [Member]                
Other Stock-Based Compensation [Abstract]                
Stock repurchases (in shares)   73,770     351,852      
Restricted Stock [Member] | Employee [Member]                
Other Stock-Based Compensation [Abstract]                
Number of restricted shares granted (in shares)     1,072,746          
Awards vested (in shares) 424,458 73,770     351,852