Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investments:
Fixed income securities (Amortized cost: $894,468, $783,047; allowance for credit losses of $1,035 and $0)	$ 919,692	$ 795,538
Equity securities	58,169	76,812
Limited partnerships	7,214	23,292
Commercial mortgage loans (less allowance of $195 and $0)	10,602	11,782
Short-term and other	1,000	1,000
Total Investments	996,677	908,424
Cash and cash equivalents	58,301	67,851
Restricted cash and cash equivalents	12,128	21,037
Accounts receivable (less allowance of $19,960 and $2,233)	100,921	111,762
Accrued investment income	4,816	4,882
Reinsurance recoverable (less allowance of $972 and $1,171)	455,564	432,067
Prepaid reinsurance premiums	11,747	5,820
Deferred policy acquisition costs	9,744	8,496
Property and equipment (less accumulated depreciation of $25,959 and $20,091)	38,144	42,542
OtherAssets	25,805	24,566
Current federal income taxes	0	4,878
Deferred federal income taxes	8,980	2,035
Total Assets	1,722,827	1,634,360
Reserves:
Losses and loss expenses	1,089,669	988,305
Unearned premiums	63,731	74,810
Total Reserves	1,153,400	1,063,115
Reinsurance payable	76,617	65,835
Short-term borrowings	20,000	20,000
Depository liabilities	110	18
AccountsPayableAndOtherAccruedLiabilities	108,852	121,076
Current federal income taxes payable	766	0
Total Liabilities	1,359,745	1,270,044
Shareholders' equity:
Additional paid-in capital	54,571	53,349
Accumulated other comprehensive income	21,759	9,369
Retained earnings	286,143	300,988
Total Shareholders' Equity	363,082	364,316
Total Liabilities and Shareholders' Equity	1,722,827	1,634,360
Class A Voting [Member]
Shareholders' equity:
Common stock	111	111
Class B Non-voting [Member]
Shareholders' equity:
Common stock	$ 498	$ 499