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Note 9 - Significant Customers and Industry Concentration (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Note 9 - Significant Customers and Industry Concentration (Details) [Line Items]      
Number of Greater Than Ten Percent of Revenue Customers     2ptsi_NumberOfGreaterThanTenPercentOfRevenueCustomers
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member]      
Note 9 - Significant Customers and Industry Concentration (Details) [Line Items]      
Number of Greater Than Ten Percent of Revenue Customers 2ptsi_NumberOfGreaterThanTenPercentOfRevenueCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 2ptsi_NumberOfGreaterThanTenPercentOfRevenueCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		  
Concentration Risk, Percentage 34.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 33.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 28.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
Revenue Provided to the Automobile Manufacturing Industry [Member] | Customer Concentration Risk [Member]      
Note 9 - Significant Customers and Industry Concentration (Details) [Line Items]      
Concentration Risk, Percentage 48.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= ptsi_RevenueProvidedtotheAutomobileManufacturingIndustryMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 46.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= ptsi_RevenueProvidedtotheAutomobileManufacturingIndustryMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 37.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= ptsi_RevenueProvidedtotheAutomobileManufacturingIndustryMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
Accounts Receivable [Member] | Customer Concentration Risk [Member]      
Note 9 - Significant Customers and Industry Concentration (Details) [Line Items]      
Number of Greater than Ten Percent of Accounts Receivable Customers 2ptsi_NumberOfGreaterThanTenPercentOfAccountsReceivableCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 2ptsi_NumberOfGreaterThanTenPercentOfAccountsReceivableCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		  
Accounts Receivable, Gross, Current (in Dollars) 22,965,000us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 28,290,000us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember