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Note 5 - Accrued Expenses and Other Liabilities (Details Textual) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Accounts Payable, Current, Total	$ 46,102,000	$ 16,597,000
Revenue Equipment [Member]
Accounts Payable, Current, Total	$ 9,050,000

X

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ptsi_RevenueEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: