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Other Non-current Receivables - Summary of Other Non-current Receivables (Detail) - EUR (€) € in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
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Trade and other non-current receivables [abstract] |  |  |
Security deposits for lease contracts | € 3,984 | € 641 | € 852
Receivable from extraordinary disposal | 549 | 761 | 986
Other |  |  | 299
Total | € 4,533 | € 1,402 | € 2,137

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