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Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Fixed income securities, held-to-maturity – at carrying value (fair value: $28,356 – 2019; $38,317 – 2018)	$ 26,925	$ 37,110
Fixed income securities, available-for-sale – at fair value (amortized cost: $5,706,656 – 2019; $5,270,798 – 2018)	5,930,237	5,273,100
Equity securities – at fair value (cost: $77,779 – 2019; $138,144 – 2018)	79,213	147,639
Short-term investments (at cost which approximates fair value)	326,121	323,864
Other investments	189,243	178,938
Total investments (Note 4 and 6)	6,551,739	5,960,651
Cash	516	505
Restricted cash	9,647	16,414
Interest and dividends due or accrued	42,975	41,620
Premiums receivable, net of allowance for uncollectible accounts of: $7,800 – 2019; $9,400 – 2018	860,480	770,518
Reinsurance recoverable, net of allowance for uncollectible accounts of: $4,400 – 2019; $4,500 – 2018	575,984	549,172
Prepaid reinsurance premiums	173,557	157,723
Deferred federal income tax	5,509	53,540
Property and equipment – at cost, net of accumulated depreciation and amortization of: $223,518 – 2019; $211,657 – 2018	76,423	65,248
Deferred policy acquisition costs	279,239	252,612
Goodwill	7,849	7,849
Other assets	135,488	76,877
Total assets	8,719,406	7,952,729
Liabilities And Stockholders' Equity
Reserve for loss and loss expense (Note 8)	4,055,631	3,893,868
Unearned premiums	1,570,226	1,431,932
Long-term Debt	550,669
Long-term Debt		439,540
Current federal income tax	2,656	1,302
Accrued salaries and benefits	100,445	116,706
Other liabilities	302,403	277,579
Total liabilities	6,582,030	6,160,927
Stockholders' Equity:
Preferred stock of $0 par value per share: Authorized shares: 5,000,000; no shares issued or outstanding	0	0
Common stock of $2 par value per share: Authorized shares: 360,000,000; Issued: 103,421,301 – 2019; 102,848,394 – 2018	206,843	205,697
Additional paid-in capital	412,347	390,315
Retained earnings	2,012,499	1,858,414
Accumulated other comprehensive income (loss) (Note 11)	98,426	(77,956)
Treasury stock – at cost (shares: 44,021,732 – 2019; 43,899,840 – 2018)	(592,739)	(584,668)
Total stockholders' equity	2,137,376	1,791,802
Commitments and contingencies
Total liabilities and stockholders' equity	$ 8,719,406	$ 7,952,729

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