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Long-Term Compensation Plan and Stock Based Compensation - Allocation of Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Compensation expense        
Restricted stock $ 549 $ 1,107 $ 1,778 $ 2,916
Long-term compensation plan 280 526 1,538 1,467
Total Compensation $ 829 $ 1,633 $ 3,316 $ 4,383