Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net Income	$ 41,612	$ 39,122
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation & Amortization	2,411	2,816
Share-Based Compensation	9,146	9,409
Deferred Income Taxes	(10,793)	(3,076)
Net Realized Gains	(2,743)	(3,557)
Net Other-Than-Temporary Impairments Recognized in Earnings	1,093	150
Non-Cash Foreign Exchange Gains	(1,137)	(6,983)
Changes in Assets And Liabilities:
Reinsurance Recoverable on Paid and Unpaid Losses and Loss Adjustment Expenses	13,107	(19,743)
Reserves for Losses and Loss Adjustment Expenses	52,063	77,812
Prepaid Reinsurance Premiums	(24,982)	10,174
Unearned Premiums	115,511	83,831
Premiums Receivable	(116,689)	(92,004)
Deferred Policy Acquisition Costs	(13,137)	(21,411)
Accrued Investment Income	(881)	(176)
Reinsurance Balances Payable	16,145	22,497
Current Income Tax Payable, Net	7,175	3,748
Other	(14,997)	15,885
Net Cash Provided by Operating Activities	72,904	118,494
Fixed Maturities
Redemptions and Maturities	165,690	127,952
Sales	95,240	225,363
Purchases	(356,970)	(515,752)
Equity Securities
Sales	39,487	28,189
Purchases	(21,022)	(37,898)
Change in Payable for Securities	12,028	47,062
Net Change in Short-Term Investments	12,649	74,399
Purchase of Property and Equipment	(2,098)	(3,422)
Net Cash Used in Investing Activities	(54,996)	(54,107)
Financing Activities:
Proceeds of Stock Issued From Employee Stock Purchase Plan	1,147	867
Payment of Employee Tax Withholding on Stock Compensation	(13,189)	(4,914)
Dividends Paid	(3,092)	0
Net Cash Used in Financing Activities	(15,134)	(4,047)
Effect of Exchange Rate on Cash	1,805	(8,373)
Change in Cash	4,579	51,967
Cash at Beginning of Year	64,643	69,901
Cash at End of Period	69,222	121,868
Supplemental Information:
Income Taxes Paid, Net	21,445	14,950
Interest Paid	7,619	7,619
Issuance of Stock to Directors	578	633
Dividends Declared and Unpaid	$ 0	$ 1,309