Amount of Loan Funded under Paycheck Protection Program

No definition available.

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Namespace Prefix:	juvf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of borrowers approved for these designated deferrals were delinquent as of the date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of delinquent borrowers approved for designated deferrals.

+ References

No definition available.

+ Details

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Namespace Prefix:	juvf_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Loans Funded under Paycheck Protection Program.

+ References

No definition available.

+ Details

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix:
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Subsequent Events (Narrative) (Details)			3 Months Ended
Subsequent Events (Narrative) (Details)	Apr. 30, 2020 USD ($) item loan	Apr. 21, 2020 $ / shares	Mar. 31, 2020 USD ($) item loan	Dec. 31, 2019 USD ($)
Subsequent Event [Line Items]
Loans and Leases Receivable, Net of Deferred Income			$ 390,014,000	$ 400,590,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends payable, date declared		Apr. 21, 2020
Dividends payable per share \| $ / shares		$ 0.22
Dividends payable, date of record		May 18, 2020
Dividends payable, date to be paid		Jun. 01, 2020
Covid-19 [Member] \| Payment Deferral [Member]
Subsequent Event [Line Items]
Number of borrowers approved for designated deferrals \| loan			8
Loans and Leases Receivable, Net of Deferred Income			$ 566,000
Number of delinquent borrowers approved for designated deferrals \| item			0
Covid-19 [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Number of Loans Funded under Paycheck Protection Program \| loan	395
Amount of Loan Funded under Paycheck Protection Program	$ 30,041,000
Number of delinquent borrowers approved for designated deferrals \| item	0
Covid-19 [Member] \| Subsequent Event [Member] \| Payment Deferral [Member]
Subsequent Event [Line Items]
Number of borrowers approved for designated deferrals \| loan	200
Loans and Leases Receivable, Net of Deferred Income	$ 72,865,000