Note L - Litigation (Details Textual) - USD ($) $ in Millions	Mar. 31, 2023	Sep. 01, 2020
Self Insurance Auto Liability Claims Threshold Amount		$ 2
Minimum [Member]
Self Insurance Liability Claims, Exceeding Amount Reserve Threshold	$ 2

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

No definition available.

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