Note 5 - Loans (Details Textual)	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Loans and Leases Receivable, Gross	$ 241,098,000	$ 239,162,000
Financing Receivable, Modifications, Number of Contracts	0	0
Allocated Specific Reserves To Modified TDRs	$ 0	$ 50,000
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	$ 0	$ 0
SBA CARES Act Paycheck Protection Program [Member] \| PPP Loans 2021 [Member]
Financing Receivable, Number of Loans Outstanding	27	40
Loans and Leases Receivable, Gross	$ 1,606,105	$ 2,819,944

Amount of allocated specific reserve for modified troubled debt restructurings.

No definition available.

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Namespace Prefix:	pfbx_
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Balance Type:	credit
Period Type:	instant

- Definition

Represents number of loans outstanding for financing receivable.

+ References

No definition available.

+ Details

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Namespace Prefix:	pfbx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. 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 https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

+ Details

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Balance Type:	debit
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- Definition

Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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