Unpaid Losses and Loss Adjustment Expenses - Reconciliation of Loss to the Liability for Claims (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Unpaid losses and ALAE, net of reinsurance	$ 92,595
Reinsurance recoverables on unpaid losses	40,344	$ 24,218	$ 22,579	$ 29,685
ULAE expense	6,146
Total gross unpaid losses and LAE	139,085	$ 111,270	$ 107,246	$ 92,807
Commercial Lines
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Unpaid losses and ALAE, net of reinsurance	90,462
Reinsurance recoverables on unpaid losses	38,584
Personal Lines
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Unpaid losses and ALAE, net of reinsurance	2,133
Reinsurance recoverables on unpaid losses	$ 1,760