Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Available-for-sale, at fair value (amortized cost of $2,096,852 and allowance for credit losses of $375 at 3/31/21) (amortized cost of $2,061,467 and allowance for credit losses of $397 at 12/31/20)	$ 2,175,869	$ 2,196,626
Equity securities, at fair value (cost - $298,926 at 3/31/21 and $293,190 at 12/31/20)	555,209	524,006
Other invested assets	50,413	54,232
Cash	94,935	62,217
Total investments and cash	2,876,426	2,837,081
Accrued investment income	16,109	16,126
Premiums and reinsurance balances receivable, net of allowances for uncollectible amounts of $18,172 at 3/31/21 and $17,658 at 12/31/20	149,736	174,628
Ceded unearned premium	111,071	113,488
Reinsurance balances recoverable on unpaid losses and settlement expenses, net of allowances for uncollectible amounts of $8,953 at 3/31/21 and $8,634 at 12/31/20	454,921	443,729
Deferred policy acquisition costs	92,595	88,425
Property and equipment, at cost, net of accumulated depreciation of $70,089 at 3/31/21 and $68,682 at 12/31/20	50,470	51,406
Investment in unconsolidated investees	134,314	128,382
Goodwill and intangibles	53,617	53,719
Other assets	33,181	31,501
TOTAL ASSETS	3,972,440	3,938,485
Liabilities
Unpaid losses and settlement expenses	1,795,275	1,750,049
Unearned premiums	590,364	586,386
Reinsurance balances payable	26,560	42,265
Funds held	85,572	81,747
Income taxes-deferred	74,624	80,235
Bonds payable, long-term debt	149,536	149,489
Accrued expenses	45,784	75,925
Other liabilities	49,939	36,411
TOTAL LIABILITIES	2,817,654	2,802,507
Shareholders’ Equity
Common stock ($0.01 par value) (Shares authorized - 200,000,000 at 3/31/21 and 12/31/20) (68,133,652 shares issued, 45,203,438 shares outstanding at 3/31/21) (68,072,794 shares issued, 45,142,580 shares outstanding at 12/31/20)	681	681
Paid-in capital	336,757	335,365
Accumulated other comprehensive earnings	63,967	108,714
Retained earnings	1,146,380	1,084,217
Deferred compensation	7,926	8,292
Less: Treasury shares, at cost (22,930,214 shares at 3/31/21 and 12/31/20)	(400,925)	(401,291)
TOTAL SHAREHOLDERS’ EQUITY	1,154,786	1,135,978
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 3,972,440	$ 3,938,485