Deferred tax (Tables)

12 Months Ended

Dec. 31, 2019

Deferred tax

Schedule of deferred tax

	December 31,
	2019		2018		2017
	(Euro, in thousands)
Recognized deferred tax assets and liabilities
Assets	€	4,205	€	2,514	€	1,978
Liabilities	€	—	€	—	€	—
Deferred tax assets unrecognized	€	289,833	€	223,377	€	164,079
Deferred taxes in the consolidated statement of operations	€	1,158	€	535	€	20
Tax benefit arising from previously unrecognized tax assets used to reduce deferred tax expense (+)		1,537		1,973		414
Deferred tax expenses relating to change in tax rates		—		—		(181)
Deferred tax expenses relating to use of previously recognized deferred tax assets		(379)		(1,438)		(213)