XML 64 R52.htm IDEA: XBRL DOCUMENT v3.21.2

Note 5 - Other Real Estate Owned (OREO) (Details Textual) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Other Real Estate, Ending Balance	$ 0		$ 0
Other Real Estate Owned, Expenses	9	$ 0	0
Residential Real Estate Properties [Member]
Other Real Estate, Ending Balance	$ 0		$ 0

X

- Definition

Expenses related to other real estate owned.

+ References

No definition available.

+ Details

Name:	fxnc_OtherRealEstateOwnedExpenses
Namespace Prefix:	fxnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(4))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

Name:	us-gaap_OtherRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=fxnc_ResidentialRealEstatePropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: