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Trust preferred securities (Details) (USD $)
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6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2012
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Dec. 31, 2011
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Sep. 30, 2007
Southern Community Financial Capital Trust I [Member]
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Jun. 30, 2012
Southern Community Financial Capital Trust I [Member]
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Mar. 31, 2005
Village Financial Statutory Trust II [Member]
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Jun. 30, 2012
Village Financial Statutory Trust II [Member]
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Jun. 30, 2012
Trust preferred securities [Member]
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| Trust Preferred Securities [Line Items] | |||||||
| Debt Instrument, issuance Date | Sep. 20, 2007 | Feb. 24, 2005 | |||||
| Trust preferred capital notes | $ 8,764,000 | $ 8,764,000 | $ 3,600,000 | $ 5,200,000 | |||
| Debt Instrument, description of variable rate basis | three-month LIBOR plus 1.40% | three-month LIBOR plus 2.15% | |||||
| Interest rate (in hundredths) | 2.62% | ||||||
| Maturity date | Dec. 31, 2037 | Mar. 15, 2035 | |||||
| Principal assets of the trust | 3,600,000 | 5,200,000 | |||||
| Period of fixed income rate (in years) | 5 years | ||||||
| Fixed income rate payable quarterly (in hundredths) | 6.29% | ||||||
| Percentage of Tier One Risk Based Capital required for capital adequacy (in hundredths) | 25.00% | ||||||
| Deferred interest payments on the junior subordinated debt securities | $ 703,817 | $ 592,283 | $ 461,100 |