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Note L - Off-Balance Sheet Arrangements (Details) (Transportation Equipment [Member], USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014
Transportation Equipment [Member]
Note L - Off-Balance Sheet Arrangements (Details) [Line Items]
Operating Leases, Rent Expense	$ 737,000	$ 1,126,000

X

- Details

Name:	ptsi_NoteLOffBalanceSheetArrangementsDetailsLineItems
Namespace Prefix:	ptsi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration