Loss and Loss Adjustment Expense Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reserves for losses and LAE at beginning of year	$ 570,651	$ 567,581	$ 610,566
Less receivable from reinsurers related to unpaid losses and LAE	(90,667)	(106,311)	(122,372)
Net reserves for losses and LAE at beginning of year	479,984	461,270	488,194
Incurred losses and LAE, related to:
Current year	549,258	515,400	459,400
Prior years	(57,279)	(53,673)	(54,844)
Total incurred losses and LAE	491,979	461,727	404,556
Paid losses and LAE related to:
Current year	342,971	310,116	277,754
Prior years	172,788	132,897	153,726
Total paid losses and LAE	515,759	443,013	431,480
Net reserves for losses and LAE at end of period	456,204	479,984	461,270
Plus receivable from reinsurers related to unpaid losses and LAE	93,394	90,667	106,311
Reserves for losses and LAE at end of period	549,598	570,651	567,581
Prior years	(57,279)	(53,673)	(54,844)
Reduction in retained homeowners reserves	20,241	26,220	21,717
Reduction in retained automobile reserves	32,963	$ 22,313	$ 26,902
Private Passenger Automobile Liability
Paid losses and LAE related to:
Plus receivable from reinsurers related to unpaid losses and LAE	120
Private Passenger Automobile Physical Damage
Paid losses and LAE related to:
Plus receivable from reinsurers related to unpaid losses and LAE	0
Commercial Automobile Liability
Paid losses and LAE related to:
Plus receivable from reinsurers related to unpaid losses and LAE	86,788
Commercial Automobile Physical Damage
Paid losses and LAE related to:
Plus receivable from reinsurers related to unpaid losses and LAE	2,836
Homeowners Property Damage
Paid losses and LAE related to:
Plus receivable from reinsurers related to unpaid losses and LAE	3,270
Other short-Duration Insurance Lines
Paid losses and LAE related to:
Plus receivable from reinsurers related to unpaid losses and LAE	$ 380