XML 63 R49.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Note 3 - Marketable Equity Securities - Recognized Gains (Losses) in Market Value for Securities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Trading securities |  |
Recognized gain | $ 146 | $ 8
Recognized gain |  | 146
Securities transferred from trading to available-for-sale | (81) |
Change in net recognized gain (loss) | $ (65) | $ 138

X
- Definition This item represents the difference between the gross amount of gains (losses) included in earnings for transfers of securities from the trading category into the available-for-sale category. Such net gain (loss) included in earnings represents the net unrealized gain (loss) which had been included in other comprehensive income and is associated with the securities transferred from the trading category into the available-for-sale category. + References No definition available. + Details
Name: | ptsi_AvailableForSaleSecuritiesTransferFromTradingGainsLosses
Namespace Prefix: | ptsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cumulative amount of gain (loss) recognized as income (or loss) from trading securities. + References No definition available. + Details
Name: | ptsi_RecognizedGainLossTradingSecurities
Namespace Prefix: | ptsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) in the fair value of equity or debt securities classified as trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3444-108585 + Details
Name: | us-gaap_IncreaseDecreaseInTradingSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TradingSecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration