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Note 6 - Long-term Debt (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014
Note 6 - Long-term Debt (Details) [Line Items] |
Line of Credit Facility, Interest Rate at Period End | 1.65%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Letters of Credit Outstanding, Amount (in Dollars) | 1,101,000 us-gaap_LettersOfCreditOutstandingAmount
Equipment Financing [Member] | Line of Credit [Member] |
Note 6 - Long-term Debt (Details) [Line Items] |
Long-term Debt, Weighted Average Interest Rate | 2.66%us-gaap_LongtermDebtWeightedAverageInterestRate / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember / us-gaap_DebtInstrumentAxis = ptsi_EquipmentFinancingMember
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] |
Note 6 - Long-term Debt (Details) [Line Items] |
Debt Instrument, Basis Spread on Variable Rate | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
Line of Credit [Member] |
Note 6 - Long-term Debt (Details) [Line Items] |
Debt Instrument, Face Amount (in Dollars) | 40,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember
Ratio of Indebtedness to Net Capital | 3.00 us-gaap_RatioOfIndebtednessToNetCapital1 / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember

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- Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Weighted average interest rate of long-term debt outstanding. + References No definition available. + Details
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Balance Type: | na
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- Definition Indebtedness divided by net capital. + References No definition available. + Details
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- Details
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