v3.26.3
Nature of Operations and Basis of Presentation - Narrative (Details)
9 Months Ended
Sep. 30, 2026
segment
state
Insurance Premium Revenue Recognition  
Number of reportable segments | segment 2
Affiliated Entity | Essent Guaranty Inc  
Insurance Premium Revenue Recognition  
Number of states in which the entity is licensed to write mortgage insurance | state 50
Maximum  
Insurance Premium Revenue Recognition  
Residential mortgage down payment percentage for which mortgage insurance is generally required (less than) 20.00%