Reserve for Losses and Loss Adjustment Expenses - Total (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Reserve for Losses and Loss Adjustment Expenses
Total reserve for losses and loss adjustment expenses	$ 7,087	$ 4,499	$ 3,869	$ 1,428	$ 2,332	$ 4,165
Add: Reinsurance recoverables on unpaid losses and loss adjustment expenses at end of period	17,129		12,952	13,202
Reserve for losses and loss adjustment expenses gross of reinsurance recoverables on unpaid losses and loss adjustment expenses at end of period	$ 24,216		$ 16,821	$ 14,630