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Net Income (Loss) Per Share - Schedule of Calculation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2023
Sep. 30, 2022
Numerator:                
Net income (loss) $ 5.4 $ 18.3 $ 15.9 $ 2.5 $ (13.8) $ 8.1 $ 39.6 $ (3.2)
Denominator – Weighted-average common shares outstanding (in thousands):                
Basic 15,995     15,926     15,970 15,897
Add: dilutive effect of non-vested common shares, restricted stock units and performance shares 159     103     140  
Diluted 16,154     16,029     16,110 15,897
Net income (loss) per common share, Basic: $ 0.34     $ 0.16     $ 2.48 $ (0.2)
Net income (loss) per common share, Diluted: $ 0.34     $ 0.16     $ 2.46 $ (0.2)