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Note 12 - Federal and State Income Taxes (Details Textual) $ in Thousands	12 Months Ended
	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