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Note 4 (Details)	Sep. 30, 2017 EUR (€)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Apr. 18, 2017 USD ($)
Receivables from Shareholders [Abstract]
Receivable from Shareholders or Affiliates for Issuance of Capital Stock	€ 25,000	$ 59,070	$ 56,160	$ 53,654

X

- Definition

Receivables from Shareholders [Abstract]

+ References

No definition available.

+ Details

Name:	px_ReceivablesfromShareholdersAbstract
Namespace Prefix:	px_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amounts due from owners or affiliates of the reporting entity related to issuance of the entity's capital stock before cash payment is received (does not include amounts due from officers or directors). This element would also include the receivable for proceeds from the issuance of shares under employee stock option exercises which proceeds have not been received as of the reporting date due to the timing of the transaction date versus the settlement date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29,30)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant