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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The fair value of available-for-sale securities that serve as collateral for borrowings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5086-111524

+ Details

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- Definition

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

+ Details

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Note 4 - Investment Securities Available for Sale - 10Q (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 4 - Investment Securities Available for Sale - 10Q (Details) [Line Items]
Available-for-sale Securities Pledged as Collateral	$ 1,600,000	$ 1,600,000	$ 1,200,000
Cash, FDIC Insured Amount		250,000
Available-for-sale Securities, Amortized Cost Basis	73,230,000	52,562,000	61,179,000
Collateral Required for Deposits Minimum Balance [Member]
Note 4 - Investment Securities Available for Sale - 10Q (Details) [Line Items]
Cash, FDIC Insured Amount	250,000	250,000
Federal Reserve Bank Primary Discount Window [Member]
Note 4 - Investment Securities Available for Sale - 10Q (Details) [Line Items]
Available-for-sale Securities Pledged as Collateral		7,900,000
Call Options [Member]
Note 4 - Investment Securities Available for Sale - 10Q (Details) [Line Items]
Available-for-sale Securities, Amortized Cost Basis	35,800,000	36,800,000	48,500,000
Callable Within One Year [Member]
Note 4 - Investment Securities Available for Sale - 10Q (Details) [Line Items]
Available-for-sale Securities, Amortized Cost Basis	13,200,000	9,200,000	26,600,000
Federal Reserve Bank Transaction Settlements [Member]
Note 4 - Investment Securities Available for Sale - 10Q (Details) [Line Items]
Available-for-sale Securities Pledged as Collateral			$ 8,900,000