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Description of Business and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Accounting Policies [Abstract] |
Schedule of Cumulative Effect of Adjustments | The cumulative effect of the adjustments to our December 31, 2018 consolidated statements of income and January 1, 2018 consolidated balance sheet for the adoption of ASC 606 was as follows:
Income Statement | Pre-ASC 606 Results Year Ended December 31, 2018 |  | Effects of Adoption of ASC 606 |  | As Reported Year Ended December 31, 2018
| (In thousands) |  |  |  |
Revenues: |  |  |  |  |
Parts, service and collision repair | $ | 1,380,506 |  | $ | 381 |  | $ | 1,380,887
Finance, insurance and other, net | $ | 396,905 |  | $ | 8,618 |  | $ | 405,523
Cost of Sales: |  |  |  |  |
Parts, service and collision repair | $ | (713,259) |  | $ | (267) |  | $ | (713,526)
Selling, general and administrative expenses: | $ | (1,145,294) |  | $ | (31) |  | $ | (1,145,325)
Operating income (loss): | $ | 168,962 |  | $ | 8,701 |  | $ | 177,663
Balance Sheet | December 31, 2017 |  | Effects of Adoption of ASC 606 |  | January 1, 2018
| (In thousands) |  |  |  |
Assets: |  |  |  |  |
Receivables, net | $ | 482,126 |  | $ | 4,590 |  | $ | 486,716
Contract assets (1) | $ | — |  | $ | 2,082 |  | $ | 2,082
Liabilities: |  |  |  |  |
Other accrued liabilities | $ | 237,963 |  | $ | 1,286 |  | $ | 239,249
Deferred income taxes | $ | 51,619 |  | $ | 1,468 |  | $ | 53,087
Stockholders' Equity: |  |  |  |  |
Retained earnings | $ | 625,356 |  | $ | 3,918 |  | $ | 629,274
Range of Estimated Useful Lives | The range of estimated useful lives is as follows:
Leasehold and land improvements | 10-30 years
Buildings | 10-30 years
Parts and service equipment | 7-10 years
Office equipment and fixtures | 3-10 years
Company vehicles | 3-5 years

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- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=109236672&loc=d3e765-108305 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.10-01.(b)(6)) -URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22580-107794 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=109236672&loc=d3e725-108305 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794 + Details
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