Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 35,804	$ 167,609
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,750	13,394
Net realized investment losses (gains)	49,309	(122,902)
Bond amortization, net	11,348	10,113
Excess tax benefit from exercise of stock options	(106)	(5)
Increase in premiums receivables	(18,761)	(18,313)
Change in current and deferred income taxes	(24,080)	40,808
Increase in deferred policy acquisition costs	(2,103)	(4,751)
Increase in unpaid losses and loss adjustment expenses	(3,458)	(14,046)
Increase in unearned premiums	19,853	39,935
Decrease in accounts payable and accrued expenses	(28,778)	(5,800)
Share-based compensation	2,396	1,069
Changes in other payables	9,668	(9,146)
Other, net	1,431	2,332
Net cash provided by operating activities	73,189	128,389
CASH FLOWS FROM INVESTING ACTIVITIES
Fixed maturities available-for-sale in nature: Purchases	(519,337)	(331,438)
Fixed maturities available-for-sale in nature: Sales	69,834	126,426
Fixed maturities available-for-sale in nature: Calls or maturities	141,144	117,104
Equity securities available-for-sale in nature:
Purchases	(408,862)	(510,895)
Sales	481,773	390,438
Calls or maturities	2,378	0
Changes in securities payable and receivable	(6,784)	(16,330)
Net decrease in short-term investments and purchased options	219,485	86,212
Purchase of fixed assets	(11,298)	(12,204)
Sale of fixed assets	104	207
Business acquisition, net of cash acquired	7,771	0
Other, net	1,381	1,557
Net cash used in investing activities	(22,411)	(148,923)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid to shareholders	(68,120)	(67,624)
Excess tax benefit from exercise of stock options	106	5
Proceeds from stock options exercised	2,111	118
Proceeds from bank loan	0	80,000
Net cash (used in) provided by financing activities	(65,903)	12,499
Net decrease in cash	(15,125)	(8,035)
Cash:
Beginning of the year	289,907	266,508
End of period	274,782	258,473
SUPPLEMENTAL CASH FLOW DISCLOSURE
Interest paid	1,440	1,152
Income taxes paid	$ 22,647	$ 30,049