Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

v3.7.0.1
Related-Party Transactions - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Related Party Transaction [Line Items]        
Contribution from parent as cash advance for ongoing operations     $ 3,000  
Cellectis (Parent) [Member]        
Related Party Transaction [Line Items]        
Contribution from parent as cash advance for ongoing operations     $ 3,000  
EURIBOR 12 [Member] | Cellectis (Parent) [Member]        
Related Party Transaction [Line Items]        
Debt instrument, basis spread on variable rate     5.00%  
Management Agreement [Member] | Cellectis (Parent) [Member]        
Related Party Transaction [Line Items]        
Contribution from parent as cash advance for ongoing operations     $ 3,000  
Related party transaction, expenses from transactions with related party $ 482 $ 542 895 $ 913
Selling, General and Administrative [Member] | Management Agreement [Member] | Cellectis (Parent) [Member]        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 446 497 830 822
Research and Development [Member] | Management Agreement [Member] | Cellectis (Parent) [Member]        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party $ 36 $ 45 $ 65 $ 91