Transactions Affecting Stockholders' Equity (Details Textual) (USD $)
|
3 Months Ended |
1 Months Ended |
7 Months Ended |
Mar. 31, 2015
|
Mar. 31, 2014
|
Nov. 21, 2012
|
May 28, 2014
|
Dec. 31, 2014
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Equity Method Investment Ownership Percentage Required For Rights Exercisable Under Right Agreement |
15.00%prph_EquityMethodInvestmentOwnershipPercentageRequiredForRightsExercisableUnderRightAgreement
|
|
|
|
|
Common Stock, Shares, Issued |
25,125,113us-gaap_CommonStockSharesIssued
|
|
|
|
25,125,113us-gaap_CommonStockSharesIssued
|
Proceeds From Issuance Of Common Stock |
$ 0us-gaap_ProceedsFromIssuanceOfCommonStock
|
$ 947,000us-gaap_ProceedsFromIssuanceOfCommonStock
|
|
|
|
Class of Warrant or Right, Exercise Price of Warrants or Rights |
$ 45us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
|
|
|
|
|
Cash Less Exercise Of Right Terms |
In the event of a cashless exercise of the Right and the acquirer has acquired less than 50% beneficial ownership of the Company
|
|
|
|
|
Share Based Compensation Arrangement By Share Based Payment Option Expiration Terms |
No incentive stock option could be exercisable more than ten years after the date of grant or five years after the date of grant where the individual owns more than ten percent of the total combined voting power of all classes of stock. Stockholders approved the 1997 Plan in Fiscal 1998
|
|
|
|
|
Percentage Of Discount On Exercise Of Right |
50.00%prph_PercentageOfDiscountOnExerciseOfRight
|
|
|
|
|
2012 Equity Line of Credit [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Maximum Number Of Common Stock Authorized For Issuance Over 36 Months |
|
|
2,500,000prph_MaximumNumberOfCommonStockAuthorizedForIssuanceOver36Months / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandTwelveEquityLineOfCreditMember
|
|
|
2014 Equity Line of Credit [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Maximum Number Of Common Stock Authorized For Issuance Over 36 Months |
|
|
|
3,000,000prph_MaximumNumberOfCommonStockAuthorizedForIssuanceOver36Months / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
Investor Right To Use Excess Proceeds, Maximum Percentage |
5.00%prph_InvestorRightToUseExcessProceedsMaximumPercentage / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
|
|
|
Share Purchase Put Restrictions Maximum Percentage Of Ownership Held By Investor To Purchase Shares In Equity Line Of Credit |
4.99%prph_SharePurchasePutRestrictionsMaximumPercentageOfOwnershipHeldByInvestorToPurchaseSharesInEquityLineOfCredit / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
|
|
|
Common Stock, Capital Shares Reserved for Future Issuance |
438,480us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
|
3,000,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
Equity Line, Purchase Price Percentage |
95.00%prph_EquityLinePurchasePricePercentage / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
|
|
|
Common Stock, Shares, Issued |
|
|
|
|
2,561,520us-gaap_CommonStockSharesIssued / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
Proceeds From Issuance Of Common Stock |
|
|
|
|
3,700,000us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
Agreement Term |
|
|
|
36 months
|
|
Purchase Price Value |
500,000prph_PurchasePriceValue / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
|
|
|
Common Stock, Capital Shares Reserved For Future Issuance |
438,480us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
|
3,000,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandFourteenEquityLineOfCreditMember
|
|
Ted Karkus [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Equity Method Investment, Ownership Percentage |
20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember
|
|
|
|
|
Plan 1997 [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Options outstanding - Shares |
26,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = prph_Plan1997Member
|
|
|
|
|
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Common Stock Shares Unissued |
2,500,000prph_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodCommonStockSharesUnissued / us-gaap_PlanNameAxis = prph_Plan1997Member
|
|
|
|
|
Available for grant, Shares (in shares) |
900,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = prph_Plan1997Member
|
|
|
|
|
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period |
1,481,750us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod / us-gaap_PlanNameAxis = prph_Plan1997Member
|
|
|
|
|
Plan 2010 [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |
1,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = prph_Plan2010Member
|
|
|
|
|
Share Based Compensation Arrangement By Share Based Payment Award, Options, Deemed Cancelled |
581,750prph_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsDeemedCancelled / us-gaap_PlanNameAxis = prph_Plan2010Member
|
|
|
|
|
Available for grant, Shares (in shares) |
19,659us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = prph_Plan2010Member
|
|
|
|
|
Directors Plan 2010 [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |
425,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = prph_DirectorsPlan2010Member
|
|
|
|
|
Available for grant, Shares (in shares) |
147,808us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = prph_DirectorsPlan2010Member
|
|
|
|
|
Amended Option Plan 1997 [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures |
4,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_PlanNameAxis = prph_AmendedOptionPlan1997Member
|
|
|
|
|
Common Stock [Member] | Dutchess [Member] | 2012 Equity Line of Credit [Member] |
|
|
|
|
|
Stockholders' Equity [Line Items] |
|
|
|
|
|
Stock Issued During Period Shares Under Specific Agreement |
698,207prph_StockIssuedDuringPeriodSharesUnderSpecificAgreement / dei_LegalEntityAxis = prph_DutchessMember / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandTwelveEquityLineOfCreditMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
|
|
|
|
|
Stock Issued During Period Value Specific Agreement |
$ 1,200,000prph_StockIssuedDuringPeriodValueSpecificAgreement / dei_LegalEntityAxis = prph_DutchessMember / us-gaap_ShortTermDebtTypeAxis = prph_TwoThousandTwelveEquityLineOfCreditMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
|
|
|
|
|