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Schedule IV - Reinsurance, Insurance Premiums Earned
 12 Months Ended
Dec. 31, 2022
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]  
Schedule IV Reinsurance
Schedule IV—Reinsurance
Insurance Premiums Earned
Years Ended December 31, 2022, 2021 and 2020
($ in thousands)Gross
Amount		Ceded
to Other
Companies		Assumed
from Other
Companies		Net
Amount		Assumed Premiums
as a Percentage
of Net Premiums
2022
Mortgage insurance$1,025,607 $72,419 $4,025 $957,213 0.42%
Title insurance24,422 504 — 23,918 0.00%
Total$1,050,029 $72,923 $4,025 $981,131 0.41%
2021
Mortgage insurance$1,104,696 $113,480 $7,066 $998,282 0.71%
Title insurance39,665 764 — 38,901 0.00%
Total$1,144,361 $114,244 $7,066 $1,037,183 0.68%
2020
Mortgage insurance$1,263,684 $183,131 $12,214 $1,092,767 1.12%
Title insurance22,843 289 — 22,554 0.00%
Total$1,286,527 $183,420 $12,214 $1,115,321 1.10%