Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Segmentation - Summary of the Amount of Revenue from External Customers (Detail)

v3.23.3
Segmentation - Summary of the Amount of Revenue from External Customers (Detail) - EUR (€)
€ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Disclosure of Revenue From External Customers [Line Items]        
Revenue from contracts with customers € 28,607 € 22,320 € 96,817 € 73,012
The Netherlands        
Disclosure of Revenue From External Customers [Line Items]        
Revenue from contracts with customers 12,492 9,925 46,475 29,901
Belgium        
Disclosure of Revenue From External Customers [Line Items]        
Revenue from contracts with customers 4,546 2,217 14,201 6,016
Germany        
Disclosure of Revenue From External Customers [Line Items]        
Revenue from contracts with customers 5,071 3,434 15,264 10,041
France        
Disclosure of Revenue From External Customers [Line Items]        
Revenue from contracts with customers 5,394 6,188 18,076 25,327
Other        
Disclosure of Revenue From External Customers [Line Items]        
Revenue from contracts with customers € 1,104 € 556 € 2,801 € 1,727