Loans - Loans Acquired (Details) - CVBK - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans
Outstanding principal balance	$ 75,983	$ 96,694
Carrying amount
Acquired Loans	62,585	80,930
Real estate - residential mortgage
Carrying amount
Acquired Loans	14,641	16,783
Commercial, financial and agricultural
Carrying amount
Acquired Loans	36,374	49,604
Equity lines
Carrying amount
Acquired Loans	11,456	14,255
Consumer Loan
Carrying amount
Acquired Loans	114	288
PCI Loans
Loans
Outstanding principal balance	19,770	25,701
Carrying amount
Acquired Loans	9,256	13,908
PCI Loans | Real estate - residential mortgage
Carrying amount
Acquired Loans	1,219	1,305
PCI Loans | Commercial, financial and agricultural
Carrying amount
Acquired Loans	7,759	12,317
PCI Loans | Equity lines
Carrying amount
Acquired Loans	278	286
Purchased Performing Loans
Loans
Outstanding principal balance	56,213	70,993
Carrying amount
Acquired Loans	53,329	67,022
Purchased Performing Loans | Real estate - residential mortgage
Carrying amount
Acquired Loans	13,422	15,478
Purchased Performing Loans | Commercial, financial and agricultural
Carrying amount
Acquired Loans	28,615	37,287
Purchased Performing Loans | Equity lines
Carrying amount
Acquired Loans	11,178	13,969
Purchased Performing Loans | Consumer Loan
Carrying amount
Acquired Loans	$ 114	$ 288