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Revision of Previously Issued Financial Statements - Consolidated Statements of Stockholders' Equity (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Pro forma Stockholder's Equity                      
Balance       $ 262,294       $ 251,639 $ 262,294 $ 251,639  
Net income (loss) $ (1,756) $ (1,678) $ (2,023) 4 $ 4,585 $ 11,847 $ (2,511) (6,056) (5,455) 7,864 $ 3,044
Balance         262,294         262,294 251,639
As Previously Reported                      
Pro forma Stockholder's Equity                      
Balance       264,021       252,441 264,021 252,441 237,930
Net income (loss)                   8,789 3,846
Balance         264,021         264,021 252,441
Adjustment                      
Pro forma Stockholder's Equity                      
Balance       $ (1,727)       $ (802) $ (1,727) (802)  
Net income (loss)         500         (925) (802)
Balance         $ (1,727)         $ (1,727) $ (802)