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Note 16 - Commitments and Contingencies (Details Textual) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Sep. 01, 2020 | Sep. 01, 2019
Self Insurance Auto Liability Claims Threshold Amount |  |  | $ 2,000,000.0 | $ 1,000,000.0
Self Insurance Auto Liability Claims Threshold Amount |  |  | $ 2,000,000.0 | $ 1,000,000.0
Minimum [Member] |  |  |  |
Self Insurance Liability Claims, Exceeding Amount Reserve Threshold |  | $ 2,000,000.0 |  |
Settlement Of Collective And Class Action Lawsuit [Member] |  |  |  |
Litigation Settlement, Amount Awarded to Other Party | $ 4,750,000 |  |  |

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
- Definition Amount awarded to other party in judgment or settlement of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=ptsi_SettlementOfCollectiveAndClassActionLawsuitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |