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Segment and Related Information, Reconciliation of Segment Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Identifiable assets by business segment [Abstract] |  |
Identifiable assets | $ 124,049 | $ 115,874
United States [Member] | Reportable Geographical Components [Member] |  |
Identifiable assets by business segment [Abstract] |  |
Identifiable assets | 110,369 | 100,583
Other Countries [Member] | Reportable Geographical Components [Member] |  |
Identifiable assets by business segment [Abstract] |  |
Identifiable assets | $ 13,680 | $ 15,291

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- 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
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Namespace Prefix: | par_
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Balance Type: | debit
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- References No definition available. + Details
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Namespace Prefix: | par_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |