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Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
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|---|---|
| Commitments And Contingencies [Line Items] | |
| 2015 | $ 869us-gaap_ContractualObligationDueInNextTwelveMonths |
| 2016 | 1,125us-gaap_ContractualObligationDueInSecondYear |
| 2017 | 1,025us-gaap_ContractualObligationDueInThirdYear |
| 2018 | 0us-gaap_ContractualObligationDueInFourthYear |
| 2019 | 0us-gaap_ContractualObligationDueInFifthYear |
| Total | 3,019us-gaap_ContractualObligationDueAfterFifthYear |
| Employment Contracts [Member] | |
| Commitments And Contingencies [Line Items] | |
| 2015 |
769us-gaap_ContractualObligationDueInNextTwelveMonths / prph_EstimatedFutureObligationAxis = us-gaap_EmploymentContractsMember |
| 2016 |
1,025us-gaap_ContractualObligationDueInSecondYear / prph_EstimatedFutureObligationAxis = us-gaap_EmploymentContractsMember |
| 2017 |
1,025us-gaap_ContractualObligationDueInThirdYear / prph_EstimatedFutureObligationAxis = us-gaap_EmploymentContractsMember |
| 2018 |
0us-gaap_ContractualObligationDueInFourthYear / prph_EstimatedFutureObligationAxis = us-gaap_EmploymentContractsMember |
| 2019 |
0us-gaap_ContractualObligationDueInFifthYear / prph_EstimatedFutureObligationAxis = us-gaap_EmploymentContractsMember |
| Total |
2,819us-gaap_ContractualObligationDueAfterFifthYear / prph_EstimatedFutureObligationAxis = us-gaap_EmploymentContractsMember |
| Godfrey Settlement Agreement [Member] | |
| Commitments And Contingencies [Line Items] | |
| 2015 |
100us-gaap_ContractualObligationDueInNextTwelveMonths / prph_EstimatedFutureObligationAxis = prph_GodfreySettlementAgreementMember |
| 2016 |
100us-gaap_ContractualObligationDueInSecondYear / prph_EstimatedFutureObligationAxis = prph_GodfreySettlementAgreementMember |
| 2017 |
0us-gaap_ContractualObligationDueInThirdYear / prph_EstimatedFutureObligationAxis = prph_GodfreySettlementAgreementMember |
| 2018 |
0us-gaap_ContractualObligationDueInFourthYear / prph_EstimatedFutureObligationAxis = prph_GodfreySettlementAgreementMember |
| 2019 |
0us-gaap_ContractualObligationDueInFifthYear / prph_EstimatedFutureObligationAxis = prph_GodfreySettlementAgreementMember |
| Total |
$ 200us-gaap_ContractualObligationDueAfterFifthYear / prph_EstimatedFutureObligationAxis = prph_GodfreySettlementAgreementMember |
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Amount of contractual obligation maturing after the fifth fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the fifth fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the fourth fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the next fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the second fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the third fiscal year following the latest fiscal year. No definition available.
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