Investments: Summary of Investment Securities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Available-for-sale Securities, Amortized Cost Basis	$ 976	$ 1,223
Available-for-sale Securities, Gross Unrealized Gains	51	58
Available-for-sale Securities, Fair Value Disclosure	1,027	1,281
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	11,895	17,209
Held-to-maturity Securities, Unrecognized Holding Gain	596	531
Held-to-maturity Securities, Unrecognized Holding Loss	(5)	(2)
Held-to-maturity Securities, Fair Value Disclosure	12,486	17,738
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Available-for-sale Securities, Amortized Cost Basis	847	1,094
Available-for-sale Securities, Gross Unrealized Gains	51	58
Available-for-sale Securities, Fair Value Disclosure	898	1,152
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	8,290	9,678
Held-to-maturity Securities, Unrecognized Holding Gain	437	373
Held-to-maturity Securities, Unrecognized Holding Loss	(1)	(2)
Held-to-maturity Securities, Fair Value Disclosure	8,726	10,049
Money Market Funds
Available-for-sale Securities, Amortized Cost Basis	129	129
Available-for-sale Securities, Fair Value Disclosure	129	129
US Government Agencies Debt Securities
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	3,605	7,531
Held-to-maturity Securities, Unrecognized Holding Gain	159	158
Held-to-maturity Securities, Unrecognized Holding Loss	(4)
Held-to-maturity Securities, Fair Value Disclosure	$ 3,760	$ 7,689

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.

+ References+ Details

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.

+ References+ Details

- 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.

+ References+ Details

- Definition

+ References+ Details

- Definition

As of the balance sheet date, the excess of fair value over carrying value (amortized cost) of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding gain.

+ References+ Details

- Definition

As of the balance sheet date, the excess of carrying value (amortized cost) over fair value of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding loss.

+ References+ Details