Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS:
Fixed maturities - available for sale, at market value (amortized cost: 2017, $6,017,568; 2016, $5,910,494)	$ 6,140,028	$ 5,970,496
Equity securities - available for sale, at fair value	934,110	887,800
Short-term investments	176,405	306,286
Other invested assets (cost: 2017, $773,322; 2016, $613,680)	774,646	613,740
Other invested assets, at fair value	1,724,532	1,766,626
Cash	242,565	297,794
Total investments and cash	9,992,286	9,842,742
Note receivable - affiliated	250,000	250,000
Accrued investment income	43,799	45,323
Premiums receivable	1,343,051	1,128,639
Reinsurance receivables - unaffiliated	893,608	887,657
Reinsurance receivables - affiliated	3,798,963	3,686,130
Funds held by reinsureds	193,800	190,421
Deferred acquisition costs	48,827	68,621
Prepaid reinsurance premiums	965,909	781,384
Other assets	231,416	202,519
TOTAL ASSETS	17,761,659	17,083,436
LIABILITIES:
Reserve for losses and loss adjustment expenses	8,286,599	8,331,288
Unearned premium reserve	1,424,957	1,312,386
Funds held under reinsurance treaties	116,397	110,836
Losses in the course of payment	333,262	82,915
Commission reserves	39,236	52,037
Other net payable to reinsurers	906,305	815,298
4.868% Senior notes due 6/1/2044	396,774	396,714
6.6% Long term notes due 5/1/2067	236,511	236,462
Accrued interest on debt and borrowings	2,632	3,537
Income taxes	173,693	148,940
Unsettled securities payable	46,183	27,121
Other liabilities	276,316	267,349
Total liabilities	12,238,865	11,784,883
Commitments and Contingencies (Note 7)
STOCKHOLDER'S EQUITY:
Common stock, par value: $0.01; 3,000 shares authorized; 1,000 shares issued and outstanding (2017 and 2016)
Additional paid-in capital	387,705	387,567
Accumulated other comprehensive income (loss), net of deferred income tax expense (benefit) of ($9,175) at 2017 and ($19,549) at 2016	(17,048)	(36,315)
Retained earnings	5,152,137	4,947,301
Total stockholder's equity	5,522,794	5,298,553
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY	$ 17,761,659	$ 17,083,436