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Segment Disclosures - Summary of Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 361,952 | $ 278,648 | $ 753,674 | $ 579,378
Operating expenses (income) | 289,736 | 236,934 | 580,035 | 460,905
Gross margin | 72,216 | 41,714 | 173,639 | 118,473
Corporate general and administrative expenses | 10,926 | 13,816 | 27,235 | 28,299
Legal settlement, net | 0 | 30,468 | 0 | 30,468
Operating income (loss) | 61,290 | (2,570) | 146,404 | 59,706
Other income (expense): |  |  |  |
Interest expense | (1,645) | (959) | (2,904) | (1,836)
Gain on sale of operations, net | 135 | 6,385 | 135 | 6,385
Other income (expense), net | (15,898) | 8,373 | (22,301) | 13,162
Total other (expense) income, net | (17,408) | 13,799 | (25,070) | 17,711
Income from continuing operations before income tax expense | 43,882 | 11,229 | 121,334 | 77,417
Financial Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 259,308 | 186,589 | 548,054 | 390,738
Benefits and Insurance Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 91,708 | 82,620 | 184,194 | 169,859
National Practices |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 10,936 | 9,439 | 21,426 | 18,781
Operating segments | Financial Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 259,308 | 186,589 | 548,054 | 390,738
Operating expenses (income) | 209,643 | 150,920 | 419,443 | 292,666
Gross margin | 49,665 | 35,669 | 128,611 | 98,072
Corporate general and administrative expenses | 0 | 0 | 0 | 0
Legal settlement, net |  | 0 |  | 0
Operating income (loss) | 49,665 | 35,669 | 128,611 | 98,072
Other income (expense): |  |  |  |
Interest expense | 0 | 0 | 0 | 0
Gain on sale of operations, net | 135 | 0 | 135 | 0
Other income (expense), net | 85 | 194 | 171 | 292
Total other (expense) income, net | 220 | 194 | 306 | 292
Income from continuing operations before income tax expense | 49,885 | 35,863 | 128,917 | 98,364
Operating segments | Benefits and Insurance Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 91,708 | 82,620 | 184,194 | 169,859
Operating expenses (income) | 75,020 | 67,776 | 147,677 | 134,709
Gross margin | 16,688 | 14,844 | 36,517 | 35,150
Corporate general and administrative expenses | 0 | 0 | 0 | 0
Legal settlement, net |  | 0 |  | 0
Operating income (loss) | 16,688 | 14,844 | 36,517 | 35,150
Other income (expense): |  |  |  |
Interest expense | (1) | 0 | (1) | 0
Gain on sale of operations, net | 0 | 6,385 | 0 | 6,385
Other income (expense), net | (12) | 698 | (36) | 872
Total other (expense) income, net | (13) | 7,083 | (37) | 7,257
Income from continuing operations before income tax expense | 16,675 | 21,927 | 36,480 | 42,407
Operating segments | National Practices |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 10,936 | 9,439 | 21,426 | 18,781
Operating expenses (income) | 9,899 | 8,487 | 19,475 | 17,028
Gross margin | 1,037 | 952 | 1,951 | 1,753
Corporate general and administrative expenses | 0 | 0 | 0 | 0
Legal settlement, net |  | 0 |  | 0
Operating income (loss) | 1,037 | 952 | 1,951 | 1,753
Other income (expense): |  |  |  |
Interest expense | 0 | 0 | 0 | 0
Gain on sale of operations, net | 0 | 0 | 0 | 0
Other income (expense), net | 1 | 0 | 1 | 0
Total other (expense) income, net | 1 | 0 | 1 | 0
Income from continuing operations before income tax expense | 1,038 | 952 | 1,952 | 1,753
Corporate and Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 0 | 0 | 0 | 0
Operating expenses (income) | (4,826) | 9,751 | (6,560) | 16,502
Gross margin | 4,826 | (9,751) | 6,560 | (16,502)
Corporate general and administrative expenses | 10,926 | 13,816 | 27,235 | 28,299
Legal settlement, net |  | 30,468 |  | 30,468
Operating income (loss) | (6,100) | (54,035) | (20,675) | (75,269)
Other income (expense): |  |  |  |
Interest expense | (1,644) | (959) | (2,903) | (1,836)
Gain on sale of operations, net | 0 | 0 | 0 | 0
Other income (expense), net | (15,972) | 7,481 | (22,437) | 11,998
Total other (expense) income, net | (17,616) | 6,522 | (25,340) | 10,162
Income from continuing operations before income tax expense | $ (23,716) | $ (47,513) | $ (46,015) | $ (65,107)

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