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Stock/Unit Based Compensation - Narrative (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares reserved for future issuance (in units) 3,007   3,007  
Granted in period (in units)     770  
Vested (in shares)     426  
Fair value of awards vested during period $ 0   $ 2,054  
Restricted Stock Units (RSU)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted in period (in units) 0   542  
Vested (in shares)     426  
Vesting period     3 years  
Compensation expense $ 448 $ 538 $ 1,647 $ 1,402
Unrecognized compensation cost $ 1,548   $ 1,548  
Compensation cost not yet recognized, period for recognition     1 year 3 months 21 days  
Restricted Stock Units (RSU) | Tranche one        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested (in shares)     15  
Vesting period     11 months  
Restricted Stock Units (RSU) | Tranche two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested (in shares)     90  
Vesting period     1 year  
Restricted Stock Units (RSU) | Tranche three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested (in shares)     437  
Performance Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted in period (in units) 0   228  
Vested (in shares)     0  
Vesting period     3 years  
Performance goal weight 50.00%   50.00%  
Maximum number of earned PSUs for the performance period, target number of PSUs 200.00%   200.00%  
Compensation expense $ 166 $ 121 $ 437 $ 264
Unrecognized compensation cost $ 1,045   $ 1,045  
Compensation cost not yet recognized, period for recognition     1 year 8 months 26 days