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Employee Benefits - Additional Information (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Detailed Information About Employee Benefits [Line Items]      
Long-term employee benefits € 15,128 € 18,464 € 19,085
Description of decrease in actuarial assumption leading to changes in defined benefit obligation A 100-basis-point decrease in the discount rate would result in a Euro1.20 million increase in the amount of the defined-benefit obligation as of December 31, 2021 (December 31, 2021: Euro1.80 million).    
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption € 1,200    
Actuarial assumption of discount rates [member]      
Disclosure Of Detailed Information About Employee Benefits [Line Items]      
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption   € 1,800  
Percentage of reasonably possible decrease in actuarial assumption   100.00%  
AUSTRIA      
Disclosure Of Detailed Information About Employee Benefits [Line Items]      
Long-term employee benefits 10,182 € 13,019  
Post Employment Benefits Defined Benefits Plan [Member]      
Disclosure Of Detailed Information About Employee Benefits [Line Items]      
Long-term employee benefits € 12,543 € 16,016