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Schedule IV - Reinsurance, Insurance Premiums Earned (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |
Gross Amount | $ 1,050,029 | $ 1,144,361 | $ 1,286,527
Ceded to Other Companies | 72,923 | 114,244 | 183,420
Assumed from Other Companies | 4,025 | 7,066 | 12,214
Net premiums earned | $ 981,131 | $ 1,037,183 | $ 1,115,321
Assumed Premiums as a Percentage of Net Premiums | 0.41% | 0.68% | 1.10%
Mortgage Insurance |  |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |
Gross Amount | $ 1,025,607 | $ 1,104,696 | $ 1,263,684
Ceded to Other Companies | 72,419 | 113,480 | 183,131
Assumed from Other Companies | 4,025 | 7,066 | 12,214
Net premiums earned | $ 957,213 | $ 998,282 | $ 1,092,767
Assumed Premiums as a Percentage of Net Premiums | 0.42% | 0.71% | 1.12%
Title Insurance |  |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |
Gross Amount | $ 24,422 | $ 39,665 | $ 22,843
Ceded to Other Companies | 504 | 764 | 289
Assumed from Other Companies | 0 | 0 | 0
Net premiums earned | $ 23,918 | $ 38,901 | $ 22,554
Assumed Premiums as a Percentage of Net Premiums | 0.00% | 0.00% | 0.00%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of earned premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(1)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17(Column D)) -URI https://asc.fasb.org/extlink&oid=120401096&loc=d3e574992-122915 + Details
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