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Leases (Details) | 12 Months Ended | 1 Months Ended
--- | --- | ---
Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2014 Lab space [Member] USD ($) | Dec. 31, 2014 Lab space [Member] DKK | Mar. 27, 2014 Office space [Member] USD ($) | Mar. 27, 2014 Office space [Member] DKK | Jul. 01, 2014 Office space [Member] Subsequent Event [Member] USD ($) | Jul. 01, 2014 Office space [Member] Subsequent Event [Member] DKK
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |
Rental payments for Operating Leases | $ 32,297 us-gaap_OperatingLeasesRentExpenseNet | $ 65,702 us-gaap_OperatingLeasesRentExpenseNet | $ 967 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = pmhs_LeasedLaboratorySpaceMember | 6,000 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = pmhs_LeasedLaboratorySpaceMember | $ 1,612 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = pmhs_LeasedOfficeSpaceMember | 10,000 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = pmhs_LeasedOfficeSpaceMember | $ 3,225 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = pmhs_LeasedOfficeSpaceMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember | 20,000 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = pmhs_LeasedOfficeSpaceMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Operating lease agreement, Description | The lease can be terminated by either the Company or the landlord by giving the other 3 month notice. The Company gave anotice terminatingthe lease agreement on February 27, 2015 thereby releasing the Company from the lease on May 31, 2015. |  |  |  |  |  |  |

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- Definition Operating lease agreement description. + References No definition available. + Details
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Namespace Prefix: | pmhs_
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- Details
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Namespace Prefix: | us-gaap_
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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