Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.7.0.1
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Summary Of Significant Accounting Policies [Line Items]    
Restricted cash $ 0 $ 17,302
Cash equivalents 0 0
Money market funds held 0  
Allowance for doubtful accounts 0 0
Impairments loss $ 0  
Milestones arrangement, categories description Pieris aggregates milestones into four categories (i) research milestones, (ii) development milestones, (iii) commercial milestones and (iv) sales milestones.  
Revenue $ 5,830,674 $ 2,931,931
Weighted average grant date fair value $ 1.00 $ 1.87
Stock based compensation expense $ 1,905,256 $ 1,164,633
Anti-dilutive securities excluded from computation of net income loss per share 8,200,000 2,600,000
Stock-based compensation expense $ 1,905,256 1,164,633
Australia [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Percentage of refundable credit 45.00%  
Australia [Member] | Research And Development [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Revenue $ 20,000,000  
Tax credits 1,500,000 400,000
Income tax receivable $ 1,500,000  
Accounting Standards Update 2016-09 [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Stock-based compensation expense   $ 100,000