Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

v3.8.0.1
Related-Party Transactions - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Sep. 06, 2017
Related Party Transaction [Line Items]          
Minimum net worth required         $ 300,000,000
Cellectis (Parent) [Member]          
Related Party Transaction [Line Items]          
Minimum net worth required $ 300,000,000   $ 300,000,000    
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]          
Related party transaction, expenses from transactions with related party 466,000 $ 430,000 $ 1,361,000 $ 1,343,000  
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 414,000 385,000 1,244,000 1,207,000  
Research and Development [Member] | Management Agreement [Member] | Cellectis (Parent) [Member]          
Related Party Transaction [Line Items]          
Related party transaction, expenses from transactions with related party $ 52,000 $ 45,000 $ 117,000 $ 136,000