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Revenue - Retail Installment Contract Receivables Contract Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Capitalized Contract Cost [Line Items] |  |  |  |  |
Contract With Customer, Asset Recognized |  |  | $ 22,000 | $ 125,000 |
Revenue recognized | $ 41,000 | $ 30,000 | 77,888 | $ 59,017 |
Retail Installment Contract |  |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 230,517 |  | 230,517 |  | $ 145,957
Financing Receivable, Allowance for Credit Loss | 1,962 |  | 1,962 |  | 4,366
Retail installment contract receivable, carrying amount | 228,555 |  | 228,555 |  | 141,591
Retail Installment Contract | Accounts receivable, net |  |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |  |
Retail installment contract receivable, carrying amount | 68,926 |  | 68,926 |  | 47,023
Retail Installment Contract | Other assets |  |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |  |
Retail installment contract receivable, carrying amount | $ 159,629 |  | $ 159,629 |  | $ 94,568

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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details
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