Note 26: Condensed Parent Company Statements: Schedule of Parent Company Condensed Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net cash provided by operating activities	$ 146,916	$ 101,432	$ 67,581
Proceeds from sale of available-for-sale securities	78,094	21,001	296,829
Net cash provided by (used in) investing activities	241,411	(147,853)	141,064
Proceeds from issuance of SBLF preferred stock		57,943
Net cash used in financing activities	(364,435)	(3,301)	(223,250)
Additional Cash Payment Information
Interest Paid	29,332	36,634	50,368
Statements of Cash Flows | Parent Company
Cash, Period Increase (Decrease)	1,984	(22,996)	(376)
Cash beginning of period	21,446	44,442	44,818
Cash end of period	23,430	21,446	44,442
Statements of Cash Flows | Parent Company | Additional Cash Payment Information
Interest Paid	620	563	577
Statements of Cash Flows | Parent Company | Operating Activities
Net income parent company	48,706	30,269	23,865
Net cash provided by operating activities	11,153	11,202	11,363
Statements of Cash Flows | Parent Company | Operating Activities | Items not requiring (providing) cash
Equity in undistributed earnings of subsidiaries	(37,925)	(19,497)	(13,042)
Compensation expense for stock option grants	435	486	461
Net realized gains on sales of available for sale securities	(280)
Net realized gains on other investements			(5)
Statements of Cash Flows | Parent Company | Operating Activities | Changes in
Prepaid expenses and other assets	(19)		8
Accounts Payable and Other Accrued Liabilities	226	(58)	75
Income taxes parent	10	2	1
Statements of Cash Flows | Parent Company | Investing Activities
Investment in subsidiaries		(15,000)
Return of principal - other investments	49	61
Proceeds from sale of available-for-sale securities	664		158
Payments to purchase held to maturity securities		(840)
Proceeds from maturity of held to maturity securities	840
Net cash provided by (used in) investing activities	1,553	(15,779)	158
Statements of Cash Flows | Parent Company | Financing Activities
Proceeds from issuance of SBLF preferred stock		57,943
Redemption of preferred stock		(58,000)
Payments for Repurchase of Warrants		(6,436)
Parent Company dividends paid	(12,991)	(12,237)	(12,567)
Stock options excercised	2,269	311	670
Net cash used in financing activities	$ (10,722)	$ (18,419)	$ (11,897)