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Note L - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 01, 2020	Sep. 01, 2019
Self Insurance Auto Liability Claims Threshold Amount		$ 2	$ 1
Self Insurance Auto Liability Claims Threshold Amount		$ 2	$ 1
Minimum [Member]
Self Insurance Liability Claims, Exceeding Amount Reserve Threshold	$ 2

X

- Definition

The minimum amount of expected claims for which claims will be reserved in the reporting period.

+ References

No definition available.

+ Details

Name:	ptsi_SelfInsuranceAutoClaimsExceedingAmountReserveThreshold
Namespace Prefix:	ptsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents self insurance auto liability claims threshold amount.

+ References

No definition available.

+ Details

Name:	ptsi_SelfInsuranceAutoLiabilityClaimsThresholdAmount
Namespace Prefix:	ptsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: