Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Stock-based Compensation Expense, Recognized in Statements of Operations (Detail)

v3.10.0.1
Stock-Based Compensation - Summary of Stock-based Compensation Expense, Recognized in Statements of Operations (Detail) - Cellectis (Parent) [Member] - Equity Incentive Plan [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation expense $ 96 $ 115 $ 203 $ 249
Selling, General and Administrative [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation expense 53 10 106 13
Research and Development [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation expense $ 43 $ 105 $ 97 $ 236