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Note 12 - Federal and State Income Taxes (Details Textual) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($)
Income Tax Examination, Penalties and Interest Expense, Total | $ 0
Statute of Limitations (Year) | 3 years

X
- Definition Number of years for the statute of limitations to run. + References No definition available. + Details
Name: | ptsi_StatuteOfLimitations
Namespace Prefix: | ptsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
Name: | us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration