XML 84 R70.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Note 12 - Stock Option Activity by Exercise Price (Details) | 12 Months Ended
--- | ---
Dec. 31, 2015 $ / shares shares
Exercise Price 1 [Member] |
Exercise price (in dollars per share) | $ / shares | $ 10.44
Shares under outstanding options (in shares) | 15,000
Weighted-average remaining contractual term | 2 years 73 days
Shares under exercisable options (in shares) | 15,000
Exercise Price 2 [Member] |
Exercise price (in dollars per share) | $ / shares | $ 10.90
Shares under outstanding options (in shares) | 6,000
Weighted-average remaining contractual term | 1 year 146 days
Shares under exercisable options (in shares) | 6,000
Exercise Price 3 [Member] |
Exercise price (in dollars per share) | $ / shares | $ 10.90
Shares under outstanding options (in shares) | 29,600
Weighted-average remaining contractual term | 6 years 146 days
Shares under exercisable options (in shares) | 2,000
Exercise Price 4 [Member] |
Exercise price (in dollars per share) | $ / shares | $ 11.22
Shares under outstanding options (in shares) | 7,498
Weighted-average remaining contractual term | 4 years 328 days
Shares under exercisable options (in shares) | 6,893
Exercise Price 5 [Member] |
Exercise price (in dollars per share) | $ / shares | $ 11.54
Shares under outstanding options (in shares) | 4,000
Weighted-average remaining contractual term | 1 year 73 days
Shares under exercisable options (in shares) | 4,000
Exercise Price 6 [Member] |
Exercise price (in dollars per share) | $ / shares | $ 11.75
Shares under outstanding options (in shares) | 4,000
Weighted-average remaining contractual term | 73 days
Shares under exercisable options (in shares) | 4,000
Exercise price (in dollars per share) | $ / shares |
Shares under outstanding options (in shares) | 66,098
Weighted-average remaining contractual term | 4 years 36 days
Shares under exercisable options (in shares) | 37,893

X
- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ptsi_ExercisePrice1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ptsi_ExercisePrice2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ptsi_ExercisePrice3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ptsi_ExercisePrice4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ptsi_ExercisePrice5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ptsi_ExercisePrice6Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |