Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

Reference 1: 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(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(5))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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

- 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

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

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=pdex_CustomerConcentrationRisk1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=pdex_CustomerConcentrationRisk2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=pdex_CustomerConcentrationRisk3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=pdex_CustomerConcentrationRisk4Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

MAJOR CUSTOMERS & SUPPLIERS (Sales) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Concentration Risk [Line Items]
Total revenue	$ 5,560	$ 4,599	$ 10,723	$ 9,728
Percentage of concentrations risk	100.00%	100.00%	100.00%	100.00%	100.00%
Total gross accounts receivable	$ 3,153		$ 3,153		$ 3,541
Sales [Member]
Concentration Risk [Line Items]
Total revenue	$ 4,423	$ 3,444	$ 8,425	$ 6,284
Percentage of concentrations risk	79.00%	75.00%	79.00%	65.00%
Sales [Member] \| Customer 1 [Member]
Concentration Risk [Line Items]
Total revenue	$ 3,062	$ 2,487	$ 6,088	$ 4,648
Percentage of concentrations risk	55.00%	54.00%	57.00%	48.00%
Sales [Member] \| Customer 2 [Member]
Concentration Risk [Line Items]
Total revenue	$ 737	$ 496	$ 1,095	$ 758
Percentage of concentrations risk	13.00%	11.00%	12.00%	9.00%
Sales [Member] \| Customer 3 [Member]
Concentration Risk [Line Items]
Total revenue	$ 624	$ 461	$ 1,242	$ 878
Percentage of concentrations risk	11.00%	10.00%	10.00%	8.00%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Percentage of concentrations risk			75.00%		77.00%
Total gross accounts receivable	$ 2,360		$ 2,360		$ 2,741
Accounts Receivable [Member] \| Customer 1 [Member]
Concentration Risk [Line Items]
Percentage of concentrations risk			54.00%		62.00%
Total gross accounts receivable	1,715		$ 1,715		$ 2,187
Accounts Receivable [Member] \| Customer 3 [Member]
Concentration Risk [Line Items]
Percentage of concentrations risk			21.00%		15.00%
Total gross accounts receivable	$ 645		$ 645		$ 554