Revenue - Other Revenues (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue
Direct premiums, earned	$ 62,352
Ceded premiums, earned	(59,077)
Net premiums, earned	$ 3,275
Total revenue		$ 51,340	$ 17,122	$ 78,083	$ 32,196