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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Aug. 31, 2018
Sep. 30, 2019
Nov. 15, 2017
Restricted Stock | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   1 year  
Restricted Stock | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   3 years  
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance-based awards number preceding trading days   90 days  
Grant Date Fair Value of Restricted Stock Awards, Quarterly Market Conditions   $ 6,330  
Performance Shares | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate shares based on thresholds measuring total shareholder return 207,891    
Two Thousand Fourteen Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of equity awards available to grant under the 2014 and 2007 plans     0