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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 | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020
Significant non-cash investing and financing activities |  |
Other payable issued for purchased customer accounts | $ 1,883 | $ 2,165
Estimated acquisition earn-out payables and related charges | 25,085 | $ 74,754
Common stock issued for agency acquisition | 4,892 |
Notes payable issued or assumed for purchased customer accounts | $ 1,355 |

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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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