Loss and Loss Adjustment Expense Reserves - Disclosure of Incurred and Paid Claims Development to the Liability for Unpaid claims and Claim Adjustment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract]
Prior years	$ 9,584	$ 11,980