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Stock-Based Compensation (Details) - Unvested Restricted Stock - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted Shares Granted (in shares) 136 142 4,047
Value Per Share (in dollars per share) $ 7.55 $ 6.51 $ 7.87
Total value of restricted shares granted $ 1,028 $ 922 $ 31,857