CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Securities, available-for-sale, at fair value:
Fixed maturities (amortized cost, 2016 - $4,602,457; 2015 - $4,684,148)	$ 4,718,625	$ 4,657,561
Equity securities	7,218	5,645
Total investment portfolio	4,725,843	4,663,206
Cash and cash equivalents	274,743	181,120
Accrued investment income	42,310	40,224
Reinsurance recoverable on loss reserves (note 4)	46,863	44,487
Reinsurance recoverable on paid losses	4,632	3,319
Premiums receivable	47,421	48,469
Home office and equipment, net	32,009	30,095
Deferred insurance policy acquisition costs	17,408	15,241
Deferred income taxes, net (note 11)	602,142	762,080
Other assets	79,678	80,102
Total assets	5,873,049	5,868,343
Liabilities:
Loss reserves (note 12)	1,535,483	1,893,402
Unearned premiums	321,326	279,973
Federal Home Loan Bank advance (note 3)	155,000	0
Senior notes (note 3)	417,087	0
Convertible senior notes (note 3)	349,073	822,301
Convertible junior subordinated debentures (note 3)	256,872	389,522
Other liabilities	255,129	247,005
Total liabilities	3,289,970	3,632,203
Contingencies (note 5)
Shareholders' equity:
Common stock (one dollar par value, shares authorized 1,000,000; shares issued 2016 - 359,395; 2015 - 340,097; shares outstanding 2016 - 345,474; 2015 - 339,657)	359,395	340,097
Paid-in capital	1,779,911	1,670,238
Treasury stock at cost (shares 2016 - 13,921; 2015 - 440)	(111,459)	(3,362)
Accumulated other comprehensive income (loss), net of tax (note 9)	30,155	(60,880)
Retained earnings	525,077	290,047
Total shareholders’ equity	2,583,079	2,236,140
Total liabilities and shareholders’ equity	$ 5,873,049	$ 5,868,343