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Segment and Related Information, Reconciliation of Segment Assets (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Identifiable assets by business segment [Abstract] |  |
Identifiable assets | $ 123,765 | $ 112,761
UNITED STATES |  |
Identifiable assets by business segment [Abstract] |  |
Identifiable assets | 107,149 | 100,310
Other Countries [Member] |  |
Identifiable assets by business segment [Abstract] |  |
Identifiable assets | $ 16,616 | $ 12,451

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized, excluding assets of discontinued operations. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References No definition available. + Details
Name: | ptc_IdentifiableAssets
Namespace Prefix: | ptc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | ptc_IdentifiableAssetsByBusinessSegmentAbstract
Namespace Prefix: | ptc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration