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Stock Award Plans and Stock-Based Compensation - Restricted Stock Awards (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 19, 2022
Dec. 23, 2021
Aug. 21, 2021
Apr. 23, 2021
Feb. 19, 2021
Dec. 31, 2022
Dec. 31, 2021
Discontinued Operations              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based payment charges           $ 1.6 $ 4.1
Restricted Stock Award              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (in shares)       4,598 70,000 0 74,598
Awards forfeited in period (in shares) 12,802 2,037 4,500   12,291 12,802 18,827
Share-based payment charges           $ 0.8 $ 8.6
Restricted Stock Award | Discontinued Operations              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based payment charges           $ 0.4 $ 3.3
Restricted Stock Award | Share-based Payment Arrangement, Tranche One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       50.00% 25.00%    
Vesting period       6 months 1 year    
Restricted Stock Award | Share-based Payment Arrangement, Tranche Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       50.00% 50.00%    
Restricted Stock Award | Share-based Payment Arrangement, Tranche Two | Share-based Payment Arrangement, Vesting Option One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period       1 year      
Restricted Stock Award | Share-based Payment Arrangement, Tranche Two | Share-based Payment Arrangement, Vesting Option Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period       6 months      
Vesting pro rata period       2 years