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Stock-based Compensation - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Nov. 30, 2020
Mar. 31, 2021
Sep. 30, 2020
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation costs related to non-vested stock options award   $ 100 $ 100
Weighted average period to recognize remaining cost   7 months 2 days  
Time-Based Restricted Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period   3 years  
Performance-Based Restricted Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period   3 years  
Performance based restricted stock settled in cash payment (in shares) 60,930    
Nonvested Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average period to recognize remaining cost   1 year 8 months 12 days  
Unrecognized compensation costs related to non-vested stock awards   $ 10,400 $ 9,000