Schedule VI - Supplemental Information Concerning Consolidated Property and Casualty Insurance Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Reserves for Unpaid Losses and LAE	$ 760,357	$ 661,203	$ 482,232
Incurred Losses and LAE Current Year	466,359	404,271	368,148
Incurred Losses and LAE Prior Years	33,134	4,318	(2,613)
Paid Losses and LAE	404,784	401,815	351,406
Net Investment Income	30,145	26,170	17,126
Deferred Policy Acquisition Costs (DPAC)	104,572	105,582	103,882
Amortization of DPAC	278,161	225,900	171,915
Net Premiums Written	746,993	740,131	593,519
Net Premiums Earned	752,400	689,276	585,490
Unearned Premiums	$ 674,055	$ 627,313	$ 555,873