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Note L - Litigation (Details Textual) - USD ($) $ in Millions | Jun. 30, 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: |