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Concentrations of Credit Risk | 12 Months Ended
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Dec. 31, 2015
Risks and Uncertainties [Abstract] |
Concentration Risk Disclosure [Text Block] |
| Note 14. | Concentrations of Credit Risk
The Company originates primarily commercial, residential, and consumer loans to customers in eastern Tennessee, northwest Florida and north Georgia. The ability of the majority of the Company's customers to honor their contractual loan obligations is dependent on the economy in these areas. Eighty seven percent of the Company's loan portfolio is concentrated in loans secured by real estate, of which a substantial portion is secured by real estate in the Company's primary market areas. Commercial real estate, including commercial construction loans, represented 65 percent of the loan portfolio at December 31, 2015, and 68 percent of the loan portfolio at December 31, 2014. Accordingly, the ultimate collectability of the loan portfolio and recovery of the carrying amount of foreclosed assets is susceptible to changes in real estate conditions in the Company's primary market areas. The other concentrations of credit by type of loan are set forth in Note 4. The Banks, as a matter of policy, do not generally extend credit to any single borrower or group of related borrowers in excess of 25% of statutory capital, or approximately $9,929,000 in case of Cornerstone Community Bank and $14,136,000 in the case of SmartBank.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6327-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6442-108592 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 + Details
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