SCHEDULE IV - FINANCIAL INFORMATION OF REGISTRANT REINSURANCE (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] | ||||||||||||
| Gross Amount | $ 398,303 | $ 292,064 | $ 192,326 | |||||||||
| Ceded to Other Companies | 53,288 | 40,867 | 26,586 | |||||||||
| Net premiums earned | $ 95,517 | $ 92,381 | $ 83,249 | $ 73,868 | $ 69,261 | $ 65,407 | $ 61,615 | $ 54,914 | 345,015 | 251,197 | 165,740 | |
| Parent | ||||||||||||
| SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] | ||||||||||||
| Gross Amount | 398,303 | 292,064 | 192,326 | $ 115,830 | ||||||||
| Ceded to Other Companies | 53,288 | 40,867 | 26,586 | 5,349 | ||||||||
| Assumed from Other Companies | 0 | 0 | 0 | 0 | ||||||||
| Net premiums earned | $ 345,015 | $ 251,197 | $ 165,740 | $ 110,481 | ||||||||
| Percentage of Amount Assumed to Net | 0.00% | 0.00% | 0.00% | 0.00% | ||||||||