Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Net cash provided by operating activities	$ 115,922	$ 87,867
Cash Flows from Investing Activities
Investments purchased	(608,538)	(774,532)
Investments sold	353,781	218,083
Investments called or matured	340,321	512,650
Net change in short-term investments	(45,612)	(7,648)
Net property and equipment purchased	(2,507)	(1,297)
Investment in CBIC	(135,900)
Net cash used in investing activities	(98,455)	(52,744)
Cash Flows from Financing Activities
Cash dividends paid	(18,757)	(17,932)
Stock option plan share issuance	4,754	4,152
Excess tax benefit from exercise of stock options	3,160	2,515
Treasury shares purchased	(6,624)	(23,858)
Net cash used in financing activities	(17,467)	(35,123)
Net increase in cash	0
Cash at the beginning of the period	0
Cash at September 30	$ 0