Regulatory Information - Narrative (Details) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2019
USD ($)
state
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Statutory Accounting Practices [Line Items] | ||||
| Maximum permitted RTC ratio | 25 | |||
| Number of states which require minimum amount of statutory capital relative to risk in force | state | 16 | |||
| Mortgage insurance, percentage of indebtedness on single loan | 25.00% | |||
| Shareholders' equity | $ 930,420 | $ 701,500 | $ 509,077 | $ 475,509 |
| Dividends, restriction with regards to capital surplus | 10.00% | |||
| Dividends, restriction with regards to capital surplus | $ 16,100 | |||
| NMIC | ||||
| Statutory Accounting Practices [Line Items] | ||||
| Mortgage insurance risk in force | $ 15,400,000 | $ 10,000,000 | ||
| Risk-to-capital | 16.3 | 13.7 |