Note 8 - Fair Value Measurements and Disclosures - Assets Measured at Fair Value on Non-Recurring Basis of Impairment Loans (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Impaired Loans	$ 726	$ 764
Fair Value, Inputs, Level 1 [Member]
Impaired Loans	$ 726	$ 764

Fair value portion of impaired loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

No definition available.

Name:	pfbx_ImpairedLoansReceivableFairValueDisclosure
Namespace Prefix:	pfbx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant