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SHARE-BASED COMPENSATION (Details Textuals) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Mar. 31, 2014 | Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Allocated share-based compensation expense | $ 3 us-gaap_AllocatedShareBasedCompensationExpense | $ 10 us-gaap_AllocatedShareBasedCompensationExpense | $ 14 us-gaap_AllocatedShareBasedCompensationExpense | $ 42 us-gaap_AllocatedShareBasedCompensationExpense |
Unrecognized compensation cost | 2 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions |  | 2 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions |  |
Number of nonvested stock options | 5,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares |  | 5,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares |  |
Weighted average value of non vested stock options (in dollars per share) | $ 1.73 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue |  | $ 1.73 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue |  |
Unrecognized expensse recognized weighted average period |  |  | 5 months 9 days |  |
Employees Stock Option Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares reserved for future issuance | 531,381 us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance / us-gaap_PlanNameAxis = pdex_EmployeesStockOptionPlan2004Member |  | 531,381 us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance / us-gaap_PlanNameAxis = pdex_EmployeesStockOptionPlan2004Member |  |
Directors Stock Option Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares reserved for future issuance | 173,334 us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance / us-gaap_PlanNameAxis = pdex_DirectorsStockOptionPlan2004Member |  | 173,334 us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance / us-gaap_PlanNameAxis = pdex_DirectorsStockOptionPlan2004Member |  |
ESPP |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares reserved for future issuance | 704,715 us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance / us-gaap_PlanNameAxis = pdex_EmployeeStockPurchasePlanMember |  | 704,715 us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance / us-gaap_PlanNameAxis = pdex_EmployeeStockPurchasePlanMember |  |
Description of plan |  |  |  |  | Offering and purchase periods of six months, and bases the pricing to purchase shares of our common stock on a formula so as to result in a per share purchase price that approximates a 15% discount from the market price of a share of our common stock at the end of the purchase period.
Restricted shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized | 1,333,333 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  | 1,333,333 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |
Description of vesting period |  |  | Vesting periods as determined by the Board for the Employee Stock Option Plan and six months for the Directors’ Stock Option Plan, and terms of up to ten years, subject to forfeit 30 days after the holder ceases to be an employee or 90 days after the holder ceases to be a director, as the case may be. |  |
Unrecognized compensation cost | $ 3 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  | $ 3 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |
Unrecognized expensse recognized weighted average period |  |  | 5 months 9 days |  |
Restricted shares | Employees Stock Option Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized | 1,066,667 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = pdex_EmployeesStockOptionPlan2004Member |  | 1,066,667 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = pdex_EmployeesStockOptionPlan2004Member |  |
Forfeiture period of stock option in case of cessation of employment |  |  | 30 days |  |
Restricted shares | Directors Stock Option Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized | 266,666 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = pdex_DirectorsStockOptionPlan2004Member |  | 266,666 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = pdex_DirectorsStockOptionPlan2004Member |  |
Forfeiture period of stock option in case of cessation of employment |  |  | 90 days |  |

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