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Schedule of Quarterly Financial Information (Details) (Parenthetical) - USD ($)
3 Months Ended 7 Months Ended 12 Months Ended 19 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
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, 2018
Apr. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Quarterly Financial Information Disclosure [Abstract]                                  
Gain (Loss) on Extinguishment of Debt     $ 380,000,000 $ 4,900,000                   $ 5,298,000  
Effective Income Tax Rate Reconciliation, Percent (210.40%) 24.40% 24.30% (4.20%) 36.30% (20.50%) (28.90%) 22.00% (371.70%) 24.10% 22.30% 8.40%          
Asset impairment charge $ 11,900,000 $ 271,000,000 $ 1,400,000   $ 1,400,000 $ 982,000 $ 8,200,000           $ 13,600,000     6,000,000.0 $ 10,600,000
Valuation allowance         $ 1,300,000                   1,300,000   $ 1,300,000
Net gain on sale of business and assets                               2,900,000  
Gain on sale of business and assets                 $ 400,000 $ 300,000 $ 1,100,000 $ 1,200,000   714,000 777,000 2,966,000  
Net gain loss on insurance $ 1,000,000.0   $ 12,000,000 $ 197,000,000                   1,300,000   800,000  
Gain (Loss) Related to Litigation Settlement                 $ 900,000 $ 100,000       $ 1,337,000 $ (596,000) $ 288,000