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Subsequent Events (Schedule Of Restricted Units Granted) (Details) - Subsequent Event [Member] - Restricted Stock Units (RSUs) [Member] shares in Thousands, $ in Thousands | 1 Months Ended
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Nov. 30, 2016 USD ($) shares
TSR Units [Member] |
Subsequent Event [Line Items] |
Intrinsic Value | $ | $ 23,482
Performance-based Award [Member] |
Subsequent Event [Line Items] |
Intrinsic Value | $ | 14,991
Time-based Award [Member] |
Subsequent Event [Line Items] |
Intrinsic Value | $ | $ 33,731
Maximum [Member] | TSR Units [Member] |
Subsequent Event [Line Items] |
Number Granted | shares | 495
Maximum [Member] | Performance-based Award [Member] |
Subsequent Event [Line Items] |
Number Granted | shares | 316
Maximum [Member] | Time-based Award [Member] |
Subsequent Event [Line Items] |
Number Granted | shares | 711

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- Definition Intrinsic value of stock units to be issued. + References No definition available. + Details
Name: | pmtc_IntrinsicValueOfStockUnitsToBeIssued
Namespace Prefix: | pmtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Stock units to be issued. + References No definition available. + Details
Name: | pmtc_StockUnitsToBeIssued
Namespace Prefix: | pmtc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | pmtc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardCategoryAxis=pmtc_TSRUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | pmtc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardCategoryAxis=pmtc_PerformanceBasedAwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | pmtc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardCategoryAxis=pmtc_TimeBasedAwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |