Indefinite-Lived Intangible Assets Excluding Goodwill, Gross of Accumulated Impairment and Translation Adjustments

No definition available.

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Namespace Prefix:	pti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Indefinite-Lived Intangible Assets (Excluding Goodwill), Net of Accumulated Impairment, Before Translation Adjustments

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

+ Details

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- Details

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- Details

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- Details

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SUPPLEMENTAL BALANCE SHEET INFORMATION - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2016	Apr. 30, 2017	Jan. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Net carrying value		$ 1.5
Gross carrying value		2.4
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Net carrying value		1.3
Gross carrying value		$ 2.2
In-process research and development \| BLS \| Spinoff
Finite-Lived Intangible Assets [Line Items]
Net carrying value			$ 3.6
Gross carrying value			$ 7.9
Impairment losses	$ 4.3