v3.19.1

Borrowed Funds - Additional Information (Details) - USD ($)		12 Months Ended
	Nov. 24, 2015	Dec. 31, 2018	Dec. 31, 2017	Oct. 01, 2017	Jul. 30, 2016	Jun. 15, 2016	Jul. 30, 2014
Debt Instrument [Line Items]
Interest rate
Federal funds purchased		$ 2,000,000	$ 0
Federal home loan bank advances		$ 2,000,000	$ 2,000,000
Senior Notes | Senior promissory note due July 31, 2019
Debt Instrument [Line Items]
Face amount							$ 5,000,000
Repurchased amount					$ 3,000,000
Interest rate		0.00%	5.50%	5.50%	5.00%
Junior Subordinated Debt | Junior subordinated debentures due June 15, 2036
Debt Instrument [Line Items]
Interest rate		4.68%	3.56%
Junior Subordinated Debt | Junior subordinated debentures due June 15, 2036 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate		1.87%
Senior Subordinated Notes | Other subordinated notes due December 1, 2025
Debt Instrument [Line Items]
Face amount	$ 13,500,000
Interest rate	6.95%	6.95%	6.95%
Basis spread on variable rate	5.33%
Debt issuance costs	$ 278,231
Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 28,000,000
Capital Securities | Junior Subordinated Debt | Junior subordinated debentures due June 15, 2036
Debt Instrument [Line Items]
Face amount						$ 2,000,000
Securities issued (in shares)						2,000
Common Securities | Junior Subordinated Debt | Junior subordinated debentures due June 15, 2036
Debt Instrument [Line Items]
Face amount						$ 62,000
Federal Home Loan Bank | Line of Credit
Debt Instrument [Line Items]
FHLB maximum borrowing capacity, percent of assets		25.00%
FHLB available borrowing capacity		$ 185,600,000	$ 84,100,000
Pacific Coast Bankers Bank | Line of Credit
Debt Instrument [Line Items]
Interest rate		3.28%	0.00%
Federal funds purchased		$ 2,000,000	$ 0
Financial Network | Certificates of Deposit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 161,200,000	152,400,000
Maximum borrowing capacity, percent of assets		15.00%
Pledged Loans | Federal Home Loan Bank | Line of Credit
Debt Instrument [Line Items]
Current borrowing capacity		$ 235,200,000	78,800,000
Pledged Loans | Federal Reserve Bank Of Richmond | Line of Credit
Debt Instrument [Line Items]
Current borrowing capacity		13,100,000	17,900,000
Federal home loan bank advances		0	0
Collateral Pledged | Federal Home Loan Bank | Line of Credit
Debt Instrument [Line Items]
Investments at fair value		$ 6,700,000	$ 7,500,000

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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