Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities:
Net income	$ 61,135	$ 63,314
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation & amortization	4,214	3,892
Deferred income taxes	(7,066)	(185)
Net realized (gains) losses	(5,143)	(10,453)
Net other-than-temporary impairments recognized in earnings	150	1,698
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	(2,225)	55,436
Reserves for losses and loss adjustment expenses	65,483	15,683
Prepaid reinsurance premiums	9,697	(14,637)
Unearned premiums	77,299	81,237
Premiums receivable	(43,813)	(735)
Deferred policy acquisition costs	(24,312)	(9,507)
Accrued investment income	(839)	(1,338)
Reinsurance balances payable	16,291	(18,993)
Current income tax payable, net	5,101	411
Other	31,047	(6,679)
Net cash provided by (used in) operating activities	187,019	159,144
Fixed maturities
Redemptions and maturities	207,620	126,930
Sales	370,501	266,707
Purchases	(776,086)	(446,516)
Equity securities
Sales	36,918	76,388
Purchases	(58,405)	(178,517)
Change in payable for securities	41,265	28,465
Purchase of other invested assets	(2,021)
Net change in short-term investments	84,022	(53,747)
Purchase of property and equipment	(3,571)	(1,503)
Net cash provided by (used in) investing activities	(99,757)	(181,793)
Financing activities:
Proceeds of stock issued from employee stock purchase plan	1,840	1,352
Proceeds of stock issued from exercise of stock options		29
Dividends paid	(2,619)
Net cash provided by (used in) financing activities	(779)	1,381
Effect of exchange rate on cash	(8,869)
Change in cash	77,614	(21,268)
Cash at beginning of year	69,901	90,751
Cash at end of period	147,515	69,483
Supplemental information:
Income taxes paid, net	24,148	28,634
Interest paid	7,619	7,619
Issuance of stock to directors	$ 633	$ 563