Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Financial risk management - Additional Information (Detail)

v3.22.1
Financial risk management - Additional Information (Detail)
€ in Thousands
 12 Months Ended
Dec. 31, 2021
EUR (€)
Customers
Dec. 31, 2020
EUR (€)
Customers
Disclosure of Financial Risk Management [Line Items]    
Notional amount € 120,000  
Senior Debt [Member]    
Disclosure of Financial Risk Management [Line Items]    
Borrowings, average maturity 5 years 6 years
Revenue Concentration Risk [Member]    
Disclosure of Financial Risk Management [Line Items]    
Concentration of risk revenue number of customers | Customers 8 6
Concentration of risk revenue benchmark € 400  
Percentage of entity's revenue 82.00% 55.00%
Trade Receivables and Contract Assets Concentration Risk [Member]    
Disclosure of Financial Risk Management [Line Items]    
Concentration of risk trade receivables and contract assets number of customers | Customers 1 1
Concentration of risk Trade receivables and contract assets benchmark € 4,000  
Concentration of risk trade receivables and contract assets percentage 67.00% 47.00%
May Two Thousand and Twenty Six [Member] | Interest Rate Cap [Member]    
Disclosure of Financial Risk Management [Line Items]    
Notional amount € 83,054 € 67,887
Interest rate risk [member]    
Disclosure of Financial Risk Management [Line Items]    
Fixed interest borrowings percentage 47.00% 58.00%
Interest rate risk [member] | Interest Rate Cap [Member]    
Disclosure of Financial Risk Management [Line Items]    
Derivative instrument coverage of variable loan principal outstanding 69.00% 90.00%
Derivative instrument mitigation risk percentage 69.00% 65.00%
Interest rate risk [member] | Interest Rate Cap [Member] | Bottom of range [member]    
Disclosure of Financial Risk Management [Line Items]    
Derivative instrument strike price percentage 0.72%  
Interest rate risk [member] | Interest Rate Cap [Member] | Top of range [member]    
Disclosure of Financial Risk Management [Line Items]    
Derivative instrument strike price percentage 1.76%