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SEGMENTS - Narrative (Details) | 9 Months Ended
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Mar. 31, 2017 segment
Segment Reporting [Abstract] |
Number of reportable business segments | 2
Threshold to classify expenses as non-recurring (period) | 2 years
Threshold to classify expenses as non-recurring, not expected to occur within (period) | 2 years

X
- Definition Nonrecurring Expenses, Period Not Expected To Recur + References No definition available. + Details
Name: | pinc_NonrecurringExpensesPeriodNotExpectedToRecur
Namespace Prefix: | pinc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nonrecurring Expenses, Period Not Incurred + References No definition available. + Details
Name: | pinc_NonrecurringExpensesPeriodNotIncurred
Namespace Prefix: | pinc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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