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Note D - Marketable Equity Securities - Unrealized Gains and Losses on Marketable Equity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2030	Sep. 30, 2025	Dec. 31, 2024
Gross unrealized gains	$ 19,895		$ 17,215
Gross unrealized losses	1,914		1,689
Net unrealized gain	$ 17,981	$ 17,981	$ 15,526

X

- Definition

The amount of accumulated gross unrealized gain on equity securities.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of accumulated unrealized gain (loss) on equity securities.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of accumulated gross unrealized loss on equity securities.

+ References

No definition available.

+ Details

Name:	ptsi_EquitySecuritiesFVNIAccumulatedUnrealizedLoss
Namespace Prefix:	ptsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant