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Description of the Company and Basis of Presentation - Revised Total Stockholders' Equity (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2020
Sep. 30, 2019
Change in Stockholders' Equity                
Balance $ 257,207 $ 258,818 $ 262,294 $ 243,578 $ 246,771 $ 251,639 $ 262,294 $ 251,639
Net income (1,678) (2,025) 4 11,847 (2,511) (6,056) (3,699) 3,280
Balance $ 259,216 257,207 258,818 252,813 243,578 246,771 259,216 252,813
As Previously Reported                
Change in Stockholders' Equity                
Balance   260,639 264,021 244,815 247,958 252,441 264,021 252,441
Net income     98 11,872 (2,461) (5,671)   3,739
Balance     260,639 254,075 244,815 247,958   254,075
Adjustment                
Change in Stockholders' Equity                
Balance   $ (1,821) (1,727) (1,237) (1,187) (802) $ (1,727) (802)
Net income     (94) (25) (50) (385)   (459)
Balance     $ (1,821) $ (1,262) $ (1,237) $ (1,187)   $ (1,262)