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Income Taxes - Additional Information (Detail) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Income Taxes [Line Items] | ||
| Applicable statutory tax rate | 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | |
| Increase in valuation allowance | $ 7,137,214us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount | |
| Liability for unrecognized tax positions | 0us-gaap_UnrecognizedTaxBenefits | |
| Germany [Member] | ||
| Income Taxes [Line Items] | ||
| Applicable statutory tax rate |
29.13%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_DE |
29.13%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_DE |
| Operating loss carryforward reductions during period |
619,820us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions / us-gaap_IncomeTaxAuthorityAxis = country_DE |
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| Germany [Member] | Corporate Income Tax [Member] | ||
| Income Taxes [Line Items] | ||
| Operating loss carryforward |
34,168,814us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = country_DE / us-gaap_TaxCreditCarryforwardAxis = pirs_CorporateIncomeTaxMember |
57,795,357us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = country_DE / us-gaap_TaxCreditCarryforwardAxis = pirs_CorporateIncomeTaxMember |
| Operating loss carryforward |
22,915,150us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition / us-gaap_IncomeTaxAuthorityAxis = country_DE / us-gaap_TaxCreditCarryforwardAxis = pirs_CorporateIncomeTaxMember |
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| Germany [Member] | Trade Tax [Member] | ||
| Income Taxes [Line Items] | ||
| Operating loss carryforward |
34,168,814us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = country_DE / us-gaap_TaxCreditCarryforwardAxis = us-gaap_GeneralBusinessMember |
56,420,412us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = country_DE / us-gaap_TaxCreditCarryforwardAxis = us-gaap_GeneralBusinessMember |
| Operating loss carryforward |
21,582,596us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition / us-gaap_IncomeTaxAuthorityAxis = country_DE / us-gaap_TaxCreditCarryforwardAxis = us-gaap_GeneralBusinessMember |
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| Operating loss carryforward reductions during period |
$ 644,795us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions / us-gaap_IncomeTaxAuthorityAxis = country_DE / us-gaap_TaxCreditCarryforwardAxis = us-gaap_GeneralBusinessMember |
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- Details
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of decrease in unrecognized tax benefits resulting from acquisitions. No definition available.
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- Definition
Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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