Note 2: Investments in Debt and Equity Securities: Schedule of Available-for-sale Securities Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
US Government Agencies Debt Securities
Available-for-sale Securities, Amortized Cost Basis	$ 30,000	$ 20,000
Available-for-sale Securities, Gross Unrealized Gains	40	60
Available-for-sale Securities, Fair Value Disclosure	30,040	20,060
Collateralized Mortgage Backed Securities
Available-for-sale Securities, Amortized Cost Basis	3,939	5,220
Available-for-sale Securities, Gross Unrealized Gains	576
Available-for-sale Securities, Gross Unrealized Losses	8	380
Available-for-sale Securities, Fair Value Disclosure	4,507	4,840
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Available-for-sale Securities, Amortized Cost Basis	582,039	628,729
Available-for-sale Securities, Gross Unrealized Gains	14,861	13,728
Available-for-sale Securities, Gross Unrealized Losses	814	802
Available-for-sale Securities, Fair Value Disclosure	596,086	641,655
Small Business Administration loan pools
Available-for-sale Securities, Amortized Cost Basis	50,198	55,422
Available-for-sale Securities, Gross Unrealized Gains	1,295	1,070
Available-for-sale Securities, Fair Value Disclosure	51,493	56,492
US States and Political Subdivisions Debt Securities
Available-for-sale Securities, Amortized Cost Basis	114,372	145,663
Available-for-sale Securities, Gross Unrealized Gains	8,506	5,478
Available-for-sale Securities, Gross Unrealized Losses		903
Available-for-sale Securities, Fair Value Disclosure	122,878	150,238
Equity Securities
Available-for-sale Securities, Amortized Cost Basis	847	1,230
Available-for-sale Securities, Gross Unrealized Gains	1,159	601
Available-for-sale Securities, Fair Value Disclosure	2,006	1,831
Available-for-sale Securities
Available-for-sale Securities, Amortized Cost Basis	781,395	856,314
Available-for-sale Securities, Gross Unrealized Gains	26,437	21,182
Available-for-sale Securities, Gross Unrealized Losses	822	2,085
Available-for-sale Securities, Fair Value Disclosure	807,010	875,411
Corporate Bond Securities
Available-for-sale Securities, Amortized Cost Basis		50
Available-for-sale Securities, Gross Unrealized Gains		245
Available-for-sale Securities, Fair Value Disclosure		$ 295

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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