Post-effective amendment to a registration statement that is not immediately effective upon filing

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.3.1.900
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]    
Restricted cash $ 17,302 $ 0
Remaining debt instruments fair value 0  
Money market funds held 0  
Trade accounts receivable 0 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.  
Weighted average grant date fair value of options granted $ 1.87 $ 1.30
Stock based compensation expense $ 1,164,633 $ 571,382
Anti-dilutive securities excluded from computation of net income loss per share 2,600,000 0
Fair Value, Inputs, Level 1 [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Cash and Cash Equivalents, Fair Value $ 0 $ 4,800,000