Commitments and Contingencies (Details) (Employment Contracts [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Employment Contracts [Member]
2012	$ 256
2013	1,025
2014	1,025
2015	555
2016	0
2017	0
Total	$ 2,861

The carrying amount of the long-term obligation as of the balance sheet date, which equals the sum of all payments due.

No definition available.

Name:	prph_EstimatedFutureObligation
Namespace Prefix:	prph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate amount of payments due in the current fiscal year after the balance sheet date to reduce an obligation.

No definition available.

Name:	prph_EstimatedFutureObligationDueInCurrentFiscalYear
Namespace Prefix:	prph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate amount of payments due in the fifth year after the balance sheet date to reduce an obligation.

No definition available.

Name:	prph_EstimatedFutureObligationDueInFifthYear
Namespace Prefix:	prph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate amount of payments due in the first year after the balance sheet date to reduce an obligation.

No definition available.

Name:	prph_EstimatedFutureObligationDueInFirstYear
Namespace Prefix:	prph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate amount of payments due in the fourth year after the balance sheet date to reduce an obligation.

No definition available.

Name:	prph_EstimatedFutureObligationDueInFourthYear
Namespace Prefix:	prph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate amount of payments due in the second year after the balance sheet date to reduce an obligation.

No definition available.

Name:	prph_EstimatedFutureObligationDueInSecondYear
Namespace Prefix:	prph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate amount of payments due in the third year after the balance sheet date to reduce an obligation.

No definition available.

Name:	prph_EstimatedFutureObligationDueInThirdYear
Namespace Prefix:	prph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant