Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Cumulative Effect of Adjustments for Adoption of ASC 606 (Details)

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Summary of Significant Accounting Policies - Cumulative Effect of Adjustments for Adoption of ASC 606 (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Revenues:      
Revenues $ 2,308,056,000 $ 2,389,138,000  
Cost of Sales:      
Cost of Sales (1,957,478,000) (2,030,127,000)  
Operating income (loss) (221,875,000) 87,315,000  
Assets:      
Receivables, net 200,876,000   $ 432,742,000
Liabilities:      
Other accrued liabilities 237,211,000   266,211,000
Deferred income taxes 0   8,927,000
Stockholders' Equity:      
Retained Earnings (Accumulated Deficit) 586,511,000   790,158,000
Parts, service and collision repair      
Revenues:      
Revenues 334,680,000 341,430,000  
Cost of Sales:      
Cost of Sales (176,782,000) (178,194,000)  
Finance, insurance and other, net      
Revenues:      
Revenues 115,292,000 106,238,000  
ASU 2014-09      
Stockholders' Equity:      
Retained Earnings (Accumulated Deficit)   $ (7,428,000)  
ASU 2014-09 | Finance, insurance and other, net      
Assets:      
Contract assets $ 5,200,000   $ 12,900,000