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Income Taxes (Details Textual) (Danish Tax [Member], USD $)	Dec. 31, 2014
Danish Tax [Member]
Income Taxes (Textual)
Net operating loss carry forwards	$ 2,380,106us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = pmhs_DanishTaxMember

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

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