Name:	pfti_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsExercisesInPeriodWeightedAverageExercisePrice
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Data Type:	num:perShareItemType
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Weighted average price at which grantees could have acquired the underlying shares with respect to equity instrument other than options that have expired.

No definition available.

Name:	pfti_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsExpiredInPeriodWeightedAverageExercisePrice
Namespace Prefix:	pfti_
Data Type:	num:perShareItemType
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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of equity instruments other than options.

No definition available.

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Namespace Prefix:	pfti_
Data Type:	num:perShareItemType
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Weighted average price at which grantees can acquire the shares reserved for issuance for equity instruments other than options.

No definition available.

Name:	pfti_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix:	pfti_
Data Type:	num:perShareItemType
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Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Weighted Average Exercise Price Roll Forward [Abstract]

No definition available.

Name:	pfti_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingWeightedAverageExercisePriceRollForwardAbstract
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Data Type:	xbrli:stringItemType
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Number of non-option equity instruments exercised by participants.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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Period Type:	duration

Number of shares under non-option equity instrument agreements for which rights to exercise lapsed.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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Net number of non-option equity instruments granted to participants.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.