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Note 3 - Loans - PCI loans (Details) - Financial Asset Acquired with Credit Deterioration [Member] - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
PCI loans, recorded investment $ 9,052 $ 12,003
PCI loans, unpaid principal balance 18,568 27,768
Peoples Bank of Virginia [Member]    
PCI loans, recorded investment 5,219 5,330
PCI loans, unpaid principal balance 6,680 7,272
Waccamaw Bank [Member]    
PCI loans, recorded investment 3,469 5,805
PCI loans, unpaid principal balance 11,498 19,602
Other Receivables [Member]    
PCI loans, recorded investment 364 868
PCI loans, unpaid principal balance $ 390 $ 894