Note 3. Securities (Detail) - The Amortized Cost and Estimated Fair Value of Investment Securities (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Due in one year or less	$ 1,501
Due in one year or less	1,501
Due in one year or less	421
Due in one year or less	427
Due in over one to five years	3,663
Due in over one to five years	3,733
Due in over one to five years	1,011
Due in over one to five years	1,005
Due in over five to ten years	10,778
Due in over five to ten years	10,982
Due after ten years	9,387
Due after ten years	9,653
Agency mortgage-backed securities, residential	91,658	84,214
Agency mortgage-backed securities, residential	93,758	85,670
Agency mortgage-backed securities, residential	24,269	22,848
Agency mortgage-backed securities, residential	24,815	22,847
Total debt securities	91,658
Total debt securities	93,758
Total debt securities	24,269
Total debt securities	24,815
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Agency mortgage-backed securities, residential	89,146	76,203
Agency mortgage-backed securities, residential	91,252	77,598
Agency mortgage-backed securities, residential	20
Agency mortgage-backed securities, residential	$ 20

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.

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 7

-Footnote 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 19

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.