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Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Goodwill [Roll Forward] |  |  |  |
Goodwill |  | $ 349,602,000 | $ 352,698,000 | $ 302,709,000
Accumulated impairment losses |  | (272,980,000) | (236,172,000) | (236,172,000)
Net goodwill |  | 76,622,000 | 116,526,000 | 66,537,000
Goodwill of acquired businesses |  | 1,423,000 | 46,810,000 |
Adjustments to prior acquisitions |  | (828,000) | 2,237,000 |
Impairment of goodwill |  | (36,808,000) | 0 | (17,674,000)
Foreign currency effects |  | (3,691,000) | 942,000 |
North America Loss Adjusting |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill |  | 88,893,000 | 88,966,000 | 73,163,000
Accumulated impairment losses |  | (71,626,000) | (68,261,000) | (68,261,000)
Net goodwill |  | 17,267,000 | 20,705,000 | 4,902,000
Goodwill of acquired businesses |  | 0 | 14,371,000 |
Adjustments to prior acquisitions |  | 0 | 1,074,000 |
Impairment of goodwill |  | (3,365,000) |  |
Foreign currency effects |  | (73,000) | 358,000 |
International Operations |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill |  | 81,779,000 | 84,802,000 | 81,610,000
Accumulated impairment losses |  | (81,779,000) | (58,987,000) | (58,987,000)
Net goodwill |  | 0 | 25,815,000 | 22,623,000
Goodwill of acquired businesses |  | 1,423,000 | 2,310,000 |
Adjustments to prior acquisitions |  | (828,000) | 430,000 |
Impairment of goodwill | $ (19,640,000) | (22,792,000) |  |
Foreign currency effects |  | (3,618,000) | 452,000 |
Broadspire |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill |  | 113,374,000 | 113,374,000 | 108,707,000
Accumulated impairment losses |  | (100,437,000) | (100,437,000) | (100,437,000)
Net goodwill |  | 12,937,000 | 12,937,000 | 8,270,000
Goodwill of acquired businesses |  | 0 | 3,934,000 |
Adjustments to prior acquisitions |  | 0 | 733,000 |
Impairment of goodwill |  | 0 |  |
Foreign currency effects |  | 0 | 0 |
Platform Solutions |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill |  | 65,556,000 | 65,556,000 | 39,229,000
Accumulated impairment losses |  | (19,138,000) | (8,487,000) | (8,487,000)
Net goodwill |  | 46,418,000 | 57,069,000 | $ 30,742,000
Goodwill of acquired businesses |  | 0 | 26,195,000 |
Adjustments to prior acquisitions |  | 0 | 0 |
Impairment of goodwill |  | (10,651,000) |  |
Foreign currency effects |  | $ 0 | $ 132,000 |

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