Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
9 Months Ended
Sep. 30, 2022
Nov. 01, 2022
Document Information [Line Items]    
Entity Central Index Key 0001583648  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2022  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2022  
Document Transition Report false  
Entity File Number 001-37471  
Entity Incorporation, State or Country Code NV  
Entity Tax Identification Number 30-0784346  
Entity Address, Address Line One 255 State Street, 9th Floor  
Entity Address, City or Town Boston  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02109  
City Area Code 857  
Local Phone Number 246-8998  
Title of 12(b) Security Common Stock, $0.001 par value per share  
Trading Symbol PIRS  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   74,406,253