Pieris Pharmaceuticals, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Consulting Shares - Additional Information (Detail)

Consulting Shares - Additional Information (Detail)	3 Months Ended		6 Months Ended
Consulting Shares - Additional Information (Detail)	Jun. 30, 2015 USD ($) $ / shares shares	Mar. 31, 2015 USD ($) $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares	Mar. 06, 2015 $ / shares shares	Dec. 31, 2014 $ / shares shares
Related Party Transaction [Line Items]
Common stock, shares issued \| shares	29,429,522		29,429,522		29,279,522
Common stock par value of issued shares \| $ / shares	$ 0.001		$ 0.001		$ 0.001
Consulting Agreement [Member]
Related Party Transaction [Line Items]
Common stock, shares issued \| shares				150,000
Common stock par value of issued shares \| $ / shares				$ 0.01
Agreement termination notice period			180 days
Termination agreement percentage of shares returned			40.00%
Shares subject to forfeiture \| shares			60,000
Estimated fair value of non-cancellable shares, Shares \| shares		90,000
Estimated fair value of non-cancellable shares, Value		$ 284,400
Estimated fair value cancellable shares, Shares \| shares		60,000
Estimated fair value of cancellable shares, Value		$ 192,000
Estimated fair value of consulting shares			$ 476,400
Percentage of consulting shares recognizable as general and administrative expense			60.00%
Percentage of consulting shares recognizable as general and administrative expense offsetting credit to equity			40.00%
Revalued unvested and forfeitable shares, percent			40.00%
Number of unvested and forfeitable shares for revaluation			60,000
Estimated fair value of unvested and forfeitable shares, Value			$ 165,000
General and administrative expense recognized in consulting shares			390,733
Consulting Agreement [Member] \| Non Cancellable Shares [Member]
Related Party Transaction [Line Items]
Share price \| $ / shares		$ 3.16
Estimated fair value of consulting shares			284,400
General and administrative expense recognized in consulting shares			284,400
Consulting Agreement [Member] \| Cancellable Shares [Member]
Related Party Transaction [Line Items]
Share price \| $ / shares		$ 3.20
Estimated fair value of consulting shares			192,000
General and administrative expense recognized in consulting shares	$ 79,666		$ 106,333