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Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities - Summary of Significant Non-Cash Investing and Financing Activities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Significant non-cash investing and financing activities |  |  |
Other payables issued for purchased customer accounts | $ 9,130 | $ 12,135 | $ 5,462
Estimated acquisition earn-out payables and related charges | $ 131,397 | 82,872 | 77,378
Notes received on the sale of fixed assets and customer accounts |  | $ 9,903 | $ 52

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- Definition Obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and/or sale of goods and services not classified as Trade Payables. + References No definition available. + Details
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- Definition Recorded Earn-out Payable + References No definition available. + Details
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- References No definition available. + Details
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- Definition The increase (decrease) during the reporting period of the amounts due from borrowers for outstanding secured or unsecured loans evidenced by a note. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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