11. Fair Value Measurements (Details) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Available-for-sale, at fair value	$ 7,572,029	$ 8,539,892
Valuation Allowance for Other Real Estate Owned	(39,294)	13,250
Rounded
Available-for-sale, at fair value	7,572,000	8,540,000
Thousand
Available-for-sale, at fair value	7,572,000	8,540,000
Valuation Allowance for Other Real Estate Owned	$ 39,000	$ 13,000

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562

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