General form of registration statement for all companies including face-amount certificate companies

Debt - Summary of Financial Obligations (Detail)

v2.4.1.9
Debt - Summary of Financial Obligations (Detail) (Tbg [Member], Bank Loan [Member], USD $)
Dec. 31, 2014
Tbg [Member] | Bank Loan [Member]
 
Debt Instrument [Line Items]  
2015 $ 1,270,605us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_CounterpartyNameAxis
= pirs_TbgMember
/ us-gaap_LongtermDebtTypeAxis
= pirs_BankLoanMember
2016   
2017   
2018   
2019   
Thereafter   
Total $ 1,270,605us-gaap_LongTermDebt
/ us-gaap_CounterpartyNameAxis
= pirs_TbgMember
/ us-gaap_LongtermDebtTypeAxis
= pirs_BankLoanMember