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Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Financing Receivable Credit Quality Indicators (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | $ 293,663 | [1] | $ 1,223,479 |
2022 |  | 1,016,654 |  | 376,467 |
2021 |  | 291,953 |  | 74,424 |
2020 |  | 56,967 |  | 22,270 |
2019 |  | 15,100 |  | 1,779 |
Prior |  | 1,893 |  | 974 |
Net Finance Receivables |  | 1,676,230 |  | 1,699,393 | $ 1,446,071
Credit losses, 2023 | [1],[2] | 22 |  |  |
Credit losses, 2022 | [2] | 25,160 |  |  |
Credit losses, 2021 | [2] | 16,803 |  |  |
Credit losses, 2020 | [2] | 1,996 |  |  |
Credit losses, 2019 | [2] | 554 |  |  |
Credit losses, prior | [2] | 74 |  |  |
Credit losses, Total Net Finance Receivables | [2] | 44,609 |  |  |
FICO Band 1 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 46,010 | [1] | 124,206 |
2022 |  | 99,259 |  | 31,502 |
2021 |  | 25,466 |  | 8,635 |
2020 |  | 6,646 |  | 3,544 |
2019 |  | 2,702 |  | 877 |
Prior |  | 1,044 |  | 549 |
Net Finance Receivables |  | 181,127 |  | 169,313 |
FICO Band 2 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 20,290 | [1] | 83,332 |
2022 |  | 66,359 |  | 22,832 |
2021 |  | 16,618 |  | 4,717 |
2020 |  | 3,439 |  | 1,475 |
2019 |  | 987 |  | 137 |
Prior |  | 189 |  | 123 |
Net Finance Receivables |  | 107,882 |  | 112,616 |
FICO Band 3 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 34,517 | [1] | 167,090 |
2022 |  | 136,928 |  | 53,063 |
2021 |  | 39,511 |  | 9,228 |
2020 |  | 6,799 |  | 2,864 |
2019 |  | 1,804 |  | 173 |
Prior |  | 207 |  | 141 |
Net Finance Receivables |  | 219,766 |  | 232,559 |
FICO Band 4 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 43,961 | [1] | 214,557 |
2022 |  | 178,073 |  | 67,872 |
2021 |  | 52,081 |  | 12,870 |
2020 |  | 9,705 |  | 3,992 |
2019 |  | 2,727 |  | 154 |
Prior |  | 161 |  | 72 |
Net Finance Receivables |  | 286,708 |  | 299,517 |
FICO Band 5 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 47,413 | [1] | 223,324 |
2022 |  | 187,342 |  | 70,579 |
2021 |  | 54,739 |  | 13,783 |
2020 |  | 10,632 |  | 3,784 |
2019 |  | 2,522 |  | 175 |
Prior |  | 125 |  | 42 |
Net Finance Receivables |  | 302,773 |  | 311,687 |
FICO Band 6 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 101,472 | [1] | 410,970 |
2022 |  | 348,693 |  | 130,619 |
2021 |  | 103,538 |  | 25,191 |
2020 |  | 19,746 |  | 6,611 |
2019 |  | 4,358 |  | 263 |
Prior |  | 167 |  | 47 |
Net Finance Receivables |  | 577,974 |  | 573,701 |
Small Loans [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 108,908 | [1] | 411,745 |
2022 |  | 306,211 |  | 64,802 |
2021 |  | 38,257 |  | 4,550 |
2020 |  | 2,594 |  | 424 |
2019 |  | 276 |  | 73 |
Prior |  | 67 |  | 11 |
Net Finance Receivables |  | 456,313 |  | 481,605 | 438,153
Credit losses, 2023 | [1],[2] | 14 |  |  |
Credit losses, 2022 | [2] | 11,463 |  |  |
Credit losses, 2021 | [2] | 4,599 |  |  |
Credit losses, 2020 | [2] | 285 |  |  |
Credit losses, 2019 | [2] | 17 |  |  |
Credit losses, prior | [2] | 2 |  |  |
Credit losses, Total Net Finance Receivables | [2] | 16,380 |  |  |
Small Loans [Member] | FICO Band 1 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 25,427 | [1] | 63,362 |
2022 |  | 45,683 |  | 10,842 |
2021 |  | 7,203 |  | 1,388 |
2020 |  | 859 |  | 246 |
2019 |  | 168 |  | 47 |
Prior |  | 41 |  | 7 |
Net Finance Receivables |  | 79,381 |  | 75,892 |
Small Loans [Member] | FICO Band 2 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 9,447 | [1] | 41,683 |
2022 |  | 29,996 |  | 6,785 |
2021 |  | 4,131 |  | 664 |
2020 |  | 397 |  | 56 |
2019 |  | 32 |  | 26 |
Prior |  | 12 |  | 2 |
Net Finance Receivables |  | 44,015 |  | 49,216 |
Small Loans [Member] | FICO Band 3 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 13,113 | [1] | 53,444 |
2022 |  | 38,952 |  | 7,659 |
2021 |  | 4,409 |  | 520 |
2020 |  | 286 |  | 39 |
2019 |  | 26 |  |  |
Prior |  | 1 |  | 1 |
Net Finance Receivables |  | 56,787 |  | 61,663 |
Small Loans [Member] | FICO Band 4 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 14,303 | [1] | 62,609 |
2022 |  | 46,107 |  | 8,980 |
2021 |  | 5,019 |  | 544 |
2020 |  | 311 |  | 33 |
2019 |  | 20 |  |  |
Prior |  | 8 |  | 1 |
Net Finance Receivables |  | 65,768 |  | 72,167 |
Small Loans [Member] | FICO Band 5 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 16,770 | [1] | 71,448 |
2022 |  | 54,149 |  | 10,650 |
2021 |  | 6,000 |  | 505 |
2020 |  | 263 |  | 22 |
2019 |  | 12 |  |  |
Prior |  | 3 |  |  |
Net Finance Receivables |  | 77,197 |  | 82,625 |
Small Loans [Member] | FICO Band 6 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 29,848 | [1] | 119,199 |
2022 |  | 91,324 |  | 19,886 |
2021 |  | 11,495 |  | 929 |
2020 |  | 478 |  | 28 |
2019 |  | 18 |  |  |
Prior |  | 2 |  |  |
Net Finance Receivables |  | 133,165 |  | 140,042 |
Large Loans [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 184,751 | [1] | 806,346 |
2022 |  | 705,650 |  | 308,411 |
2021 |  | 251,035 |  | 69,061 |
2020 |  | 53,824 |  | 21,724 |
2019 |  | 14,772 |  | 1,696 |
Prior |  | 1,804 |  | 947 |
Net Finance Receivables |  | 1,211,836 |  | 1,208,185 | 997,226
Credit losses, 2023 | [1],[2] | 8 |  |  |
Credit losses, 2022 | [2] | 13,653 |  |  |
Credit losses, 2021 | [2] | 12,142 |  |  |
Credit losses, 2020 | [2] | 1,696 |  |  |
Credit losses, 2019 | [2] | 529 |  |  |
Credit losses, prior | [2] | 69 |  |  |
Credit losses, Total Net Finance Receivables | [2] | 28,097 |  |  |
Large Loans [Member] | FICO Band 1 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 20,579 | [1] | 60,836 |
2022 |  | 53,571 |  | 20,653 |
2021 |  | 18,258 |  | 7,219 |
2020 |  | 5,773 |  | 3,286 |
2019 |  | 2,529 |  | 826 |
Prior |  | 997 |  | 539 |
Net Finance Receivables |  | 101,707 |  | 93,359 |
Large Loans [Member] | FICO Band 2 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 10,843 | [1] | 41,174 |
2022 |  | 35,941 |  | 15,955 |
2021 |  | 12,410 |  | 4,044 |
2020 |  | 3,038 |  | 1,409 |
2019 |  | 951 |  | 111 |
Prior |  | 177 |  | 121 |
Net Finance Receivables |  | 63,360 |  | 62,814 |
Large Loans [Member] | FICO Band 3 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 21,404 | [1] | 112,336 |
2022 |  | 96,791 |  | 44,805 |
2021 |  | 34,620 |  | 8,637 |
2020 |  | 6,468 |  | 2,811 |
2019 |  | 1,770 |  | 172 |
Prior |  | 202 |  | 137 |
Net Finance Receivables |  | 161,255 |  | 168,898 |
Large Loans [Member] | FICO Band 4 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 29,658 | [1] | 150,559 |
2022 |  | 130,747 |  | 57,913 |
2021 |  | 46,263 |  | 12,063 |
2020 |  | 9,216 |  | 3,931 |
2019 |  | 2,697 |  | 152 |
Prior |  | 148 |  | 67 |
Net Finance Receivables |  | 218,729 |  | 224,685 |
Large Loans [Member] | FICO Band 5 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 30,643 | [1] | 150,793 |
2022 |  | 132,220 |  | 59,154 |
2021 |  | 48,096 |  | 13,060 |
2020 |  | 10,220 |  | 3,735 |
2019 |  | 2,499 |  | 172 |
Prior |  | 116 |  | 37 |
Net Finance Receivables |  | 223,794 |  | 226,951 |
Large Loans [Member] | FICO Band 6 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 71,624 | [1] | 290,648 |
2022 |  | 256,380 |  | 109,931 |
2021 |  | 91,388 |  | 24,038 |
2020 |  | 19,109 |  | 6,552 |
2019 |  | 4,326 |  | 263 |
Prior |  | 164 |  | 46 |
Net Finance Receivables |  | 442,991 |  | 431,478 |
Retail Loans [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 4 | [1] | 5,388 |
2022 |  | 4,793 |  | 3,254 |
2021 |  | 2,661 |  | 813 |
2020 |  | 549 |  | 122 |
2019 |  | 52 |  | 10 |
Prior |  | 22 |  | 16 |
Net Finance Receivables |  | 8,081 |  | 9,603 | $ 10,692
Credit losses, 2022 | [2] | 44 |  |  |
Credit losses, 2021 | [2] | 62 |  |  |
Credit losses, 2020 | [2] | 15 |  |  |
Credit losses, 2019 | [2] | 8 |  |  |
Credit losses, prior | [2] | 3 |  |  |
Credit losses, Total Net Finance Receivables | [2] | 132 |  |  |
Retail Loans [Member] | FICO Band 1 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  | 4 | [1] | 8 |
2022 |  | 5 |  | 7 |
2021 |  | 5 |  | 28 |
2020 |  | 14 |  | 12 |
2019 |  | 5 |  | 4 |
Prior |  | 6 |  | 3 |
Net Finance Receivables |  | 39 |  | 62 |
Retail Loans [Member] | FICO Band 2 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  |  |  | 475 |
2022 |  | 422 |  | 92 |
2021 |  | 77 |  | 9 |
2020 |  | 4 |  | 10 |
2019 |  | 4 |  |  |
Net Finance Receivables |  | 507 |  | 586 |
Retail Loans [Member] | FICO Band 3 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  |  |  | 1,310 |
2022 |  | 1,185 |  | 599 |
2021 |  | 482 |  | 71 |
2020 |  | 45 |  | 14 |
2019 |  | 8 |  | 1 |
Prior |  | 4 |  | 3 |
Net Finance Receivables |  | 1,724 |  | 1,998 |
Retail Loans [Member] | FICO Band 4 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  |  |  | 1,389 |
2022 |  | 1,219 |  | 979 |
2021 |  | 799 |  | 263 |
2020 |  | 178 |  | 28 |
2019 |  | 10 |  | 2 |
Prior |  | 5 |  | 4 |
Net Finance Receivables |  | 2,211 |  | 2,665 |
Retail Loans [Member] | FICO Band 5 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  |  |  | 1,083 |
2022 |  | 973 |  | 775 |
2021 |  | 643 |  | 218 |
2020 |  | 149 |  | 27 |
2019 |  | 11 |  | 3 |
Prior |  | 6 |  | 5 |
Net Finance Receivables |  | 1,782 |  | 2,111 |
Retail Loans [Member] | FICO Band 6 [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
2023 |  |  |  | 1,123 |
2022 |  | 989 |  | 802 |
2021 |  | 655 |  | 224 |
2020 |  | 159 |  | 31 |
2019 |  | 14 |  |  |
Prior |  | 1 |  | 1 |
Net Finance Receivables |  | $ 1,818 |  | $ 2,181 |
[1] | Includes loans originated during the three months ended March 31, 2023.
[2] | Represents credit losses for the three months ended March 31, 2023.

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