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Losses and LAE - Reserve for Losses and LAE by Segment (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Total gross reserve for losses and LAE | $ 426,843 | $ 828,642 |  |
Mortgage insurance |  |  |  |
Total gross reserve for losses and LAE | 420,955 | 823,136 | $ 844,107 | $ 401,273
Title insurance |  |  |  |
Total gross reserve for losses and LAE | 5,888 | 5,506 |  |
Primary case | Mortgage insurance |  |  |  |
Total gross reserve for losses and LAE | 398,874 | 790,380 |  |
Primary IBNR and LAE | Mortgage insurance |  |  |  |
Total gross reserve for losses and LAE | 12,169 | 22,745 |  |
Pool and other | Mortgage insurance |  |  |  |
Total gross reserve for losses and LAE | $ 9,912 | $ 10,011 |  |

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- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (cc) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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