Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.7.0.1
Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Other Commitments [Line Items]          
Operating lease expiration date     2017-10    
Total rent expense under operating lease $ 65 $ 68 $ 130 $ 143  
Due to related parties 5,807   5,807   $ 1,712
Contribution from parent as cash advance for ongoing operations     3,000    
Forward purchase commitment amount     1,800    
Cellectis (Parent) [Member]          
Other Commitments [Line Items]          
Contribution from parent as cash advance for ongoing operations     3,000    
Management Agreement [Member] | Cellectis (Parent) [Member]          
Other Commitments [Line Items]          
Due to related parties $ 5,800   5,800    
Contribution from parent as cash advance for ongoing operations     $ 3,000