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Business Combinations - Fair Value of Assets and Liabilities (Detail) - 2017 Acquisitions [member]
€ in Thousands
Jan. 31, 2017
EUR (€)
Disclosure of detailed information about business combination [line items]  
Inventory € 1,895
Other assets 187
Total identifiable net assets acquired 2,082
Goodwill arising on acquisition 2,041
Consideration transferred € 4,123