XML 108 R68.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Capital - Summary of Historical Changes in the Share Capital of the Company (Detail) - EUR (€) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of classes of share capital [line items] |  |  |
Beginning balance | € 242,849,000 | € 322,076,000 | € 115,445,000
Ending balance | € 129,923,000 | 242,849,000 | 322,076,000
Balance as of December 31, 2015 | 24,990,822 |  |
Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Beginning balance | € 2,464,900 | 2,420,500 | 1,916,100
Ending balance | € 2,499,100 | € 2,464,900 | € 2,420,500
Balance as of January 1, 2015 | 24,648,828 | 24,205,129 | 19,160,661
Balance as of December 31, 2015 | 24,990,822 | 24,648,828 | 24,205,129
Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Beginning balance | € 405,882,500 | € 403,910,400 | € 163,876,800
Ending balance | 406,709,300 | 405,882,500 | 403,910,400
01/06/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 400
01/06/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 18,900
01/07/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 1,000
01/07/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 59,000
01/22/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  |  | 3,500
01/22/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  |  | (3,500)
01/30/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 9,800
01/30/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 476,800
02/03/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 800
02/03/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 37,700
02/13/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 3,800
02/13/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 188,600
02/17/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 2,000
02/17/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 100,600
03/04/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 1,000
03/04/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 59,000
03/26/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 5,000
03/26/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 400,000
04/07/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 4,000
04/07/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 169,200
04/09/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 15,000
04/09/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 692,100
04/28/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 1,400
04/28/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 77,100
05/11/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 2,000
05/11/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 100,700
06/23/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 59,100
06/23/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 27,029,400
06/23/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital Decrease |  |  | (58,600)
06/23/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital Decrease |  |  | (26,823,400)
07/20/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 414,000
07/20/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 254,932,900
07/24/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 1,600
07/24/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 79,200
07/25/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  |  | 28,600
07/25/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  |  | (28,600)
07/28/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 1,700
07/28/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 91,500
09/18/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 300
09/18/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 46,700
10/07/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 4,800
10/07/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 241,200
12/10/2015 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 1,800
12/10/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 146,900
12/14/2015 [Member ] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 1,600
12/14/2015 [Member ] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 69,500
05/05/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Issue of share subscription warrants |  |  | 43,000
12/10/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Issue of share subscription warrants |  |  | 99,200
12/31/2015 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Fees charged to share premium |  |  | € (18,269,700)
1/5/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 600 |
1/5/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 32,700 |
2/16/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Issue of share subscription warrants |  | 471,100 |
4/6/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  | 10,200 |
4/6/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  | (10,200) |
5/27/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 200 |
5/27/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 7,500 |
6/3/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 15,600 |
6/3/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | (15,600) |
6/6/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 6,000 |
6/6/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 301,200 |
6/10/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
6/10/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 176,000 |
7/18/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 2,000 |
7/18/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 100,700 |
8/4/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 1,000 |
8/4/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 50,400 |
8/24/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 700 |
8/24/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 37,100 |
8/30/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
8/30/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
8/31/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
8/31/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/1/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/1/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/2/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/2/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/5/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/5/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/6/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/6/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/6/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/6/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/8/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/8/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/9/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/9/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/12/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 400 |
9/12/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 66,200 |
9/12/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 500 |
9/12/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 23,100 |
11/25/2016 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 600 |
11/25/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 30,200 |
8/21/2016 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Issue of share subscription warrants |  | € 106,000 |
02/03/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 2,000 |  |
02/03/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 100,700 |  |
05/16/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 4,000 |  |
05/16/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 170,700 |  |
07/12/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 200 |  |
07/12/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 8,300 |  |
08/04/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 100 |  |
08/04/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 64,600 |  |
09/14/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 3,600 |  |
09/14/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 208,200 |  |
Issue of share subscription warrants | 53,100 |  |
09/29/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 100 |  |
09/29/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 4,000 |  |
09/30/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve | 23,100 |  |
09/30/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve | (23,100) |  |
10/02/2017 [Member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 100 |  |
10/02/2017 [Member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 4,000 |  |
12/15/2017 [member] | Share capital [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve | 1,100 |  |
12/15/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve | (1,100) |  |
02/09/2017 [member] | Share premium [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Issue of share subscription warrants | € 237,400 |  |
Common Shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Balance as of January 1, 2015 | 24,648,828 | 24,205,129 | 19,160,661
Balance as of December 31, 2015 | 24,990,822 | 24,648,828 | 24,205,129
Beginning balance, Nominal value | € 0.10 | € 0.10 | € 0.10
Ending balance, Nominal value | € 0.10 | € 0.10 | € 0.10
Common Shares [member] | 01/06/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 3,750
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 01/07/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 10,000
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 01/22/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  |  | 35,360
Capital increase by incorporation of reserve |  |  | € 0.10
Common Shares [member] | 01/30/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 97,720
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 02/03/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 7,500
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 02/13/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 37,500
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 02/17/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 19,995
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 03/04/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 10,000
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 03/26/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 50,000
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 04/07/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 40,005
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 04/09/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 150,375
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 04/28/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 14,290
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 05/11/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 20,010
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 06/23/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 590,543
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 06/23/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital Decrease |  |  | (586,048)
Capital Decrease, Nominal value |  |  | € 0.10
Common Shares [member] | 07/20/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 4,140,000
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 07/24/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 15,750
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 07/25/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  |  | 286,338
Capital increase by incorporation of reserve |  |  | € 0.10
Common Shares [member] | 07/28/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 17,000
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 09/18/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 2,500
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 10/07/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 47,955
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 12/10/2015 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 17,500
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 12/14/2015 [Member ] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  |  | 16,425
Capital increase by issuance of common shares |  |  | € 0.10
Common Shares [member] | 1/5/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 6,495 |
Common Shares [member] | 2/16/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Issue of share subscription warrants |  | 0 |
Issue of share subscription warrants, Nominal value |  | € 0.10 |
Common Shares [member] | 4/6/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve |  | 101,829 |
Capital increase by incorporation of reserve |  | € 0.10 |
Common Shares [member] | 5/27/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 1,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 6/3/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 156,000 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 6/6/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 59,890 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 6/10/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 34,985 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 7/18/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 20,010 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 8/4/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 10,020 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 8/24/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 7,380 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 8/30/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 8/31/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/1/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/2/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/5/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/6/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/6/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/8/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/9/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/12/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 3,500 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 9/12/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 4,590 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 11/25/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares |  | 6,000 |
Capital increase by issuance of common shares |  | € 0.10 |
Common Shares [member] | 8/21/2016 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Issue of share subscription warrants |  | 0 |
Common Shares [member] | 02/03/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 20,010 |  |
Capital increase by issuance of common shares | € 0.10 |  |
Common Shares [member] | 05/16/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 40,365 |  |
Capital increase by issuance of common shares | € 0.10 |  |
Common Shares [member] | 07/12/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 1,650 |  |
Capital increase by issuance of common shares | € 0.10 |  |
Common Shares [member] | 08/04/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 1,200 |  |
Capital increase by issuance of common shares | € 0.10 |  |
Common Shares [member] | 09/14/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 35,925 |  |
Capital increase by issuance of common shares | € 0.10 |  |
Common Shares [member] | 09/29/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 500 |  |
Capital increase by issuance of common shares | € 0.10 |  |
Common Shares [member] | 09/30/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve | 230,843 |  |
Capital increase by incorporation of reserve | € 0.10 |  |
Common Shares [member] | 10/02/2017 [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by issuance of common shares | 500 |  |
Capital increase by issuance of common shares | € 0.10 |  |
Common Shares [member] | 12/15/2017 [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital increase by incorporation of reserve | 11,001 |  |
Capital increase by incorporation of reserve | € 0.10 |  |

X
- Definition Capital decrease. + References No definition available. + Details
Name: | dbvt_CapitalDecrease
Namespace Prefix: | dbvt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Capital decrease amount + References No definition available. + Details
Name: | dbvt_CapitalDecreaseAmount
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Capital increase decrease by incorporation of reserve. + References No definition available. + Details
Name: | dbvt_CapitalIncreaseDecreaseByIncorporationOfReserve
Namespace Prefix: | dbvt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common stock par value of capital decrease + References No definition available. + Details
Name: | dbvt_CommonStockParValueOfCapitalDecrease
Namespace Prefix: | dbvt_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common stock par value of share subscription warrants. + References No definition available. + Details
Name: | dbvt_CommonStockParValueOfShareSubscriptionWarrants
Namespace Prefix: | dbvt_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common stock par value per share beginning balance. + References No definition available. + Details
Name: | dbvt_CommonStockParValuePerShareBeginningBalance
Namespace Prefix: | dbvt_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common stock par value per share ending balance. + References No definition available. + Details
Name: | dbvt_CommonStockParValuePerShareEndingBalance
Namespace Prefix: | dbvt_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fees charged to share premium. + References No definition available. + Details
Name: | dbvt_FeesChargedToSharePremium
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase decrease in share capital through incorporation of reserve during period shares. + References No definition available. + Details
Name: | dbvt_IncreaseDecreaseInShareCapitalThroughIncorporationOfReserveDuringPeriodShares
Namespace Prefix: | dbvt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase decrease in share capital through incorporation of reserve during period value. + References No definition available. + Details
Name: | dbvt_IncreaseDecreaseInShareCapitalThroughIncorporationOfReserveDuringPeriodValue
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase decrease in share capital value through issuance of shares. + References No definition available. + Details
Name: | dbvt_IncreaseDecreaseInShareCapitalThroughIssuanceOfShares
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Issue of share subscription warrants during period shares. + References No definition available. + Details
Name: | dbvt_IssueOfShareSubscriptionWarrantsDuringPeriodShares
Namespace Prefix: | dbvt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Issue of share subscription warrants for share premium. + References No definition available. + Details
Name: | dbvt_IssueOfShareSubscriptionWarrantsForSharePremium
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share capital incorporation of reserve of common stock par value. + References No definition available. + Details
Name: | dbvt_ShareCapitalIncorporationOfReserveOfCommonStockParValue
Namespace Prefix: | dbvt_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share capital of common stock par value. + References No definition available. + Details
Name: | dbvt_ShareCapitalOfCommonStockParValue
Namespace Prefix: | dbvt_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfClassesOfShareCapitalLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2017-01-01 -Paragraph 24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=1&date=2017-03-01&anchor=para_24_a&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2017-01-01 -Paragraph 32 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=1&date=2017-03-01&anchor=para_32_a_i&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2017-01-01 -Paragraph 93 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=13&date=2017-03-01&anchor=para_93_a&doctype=Standard -URIDate 2017-03-09 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2017-01-01 -Paragraph 93 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=13&date=2017-03-01&anchor=para_93_b&doctype=Standard -URIDate 2017-03-09 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2017-01-01 -Paragraph 93 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=13&date=2017-03-01&anchor=para_93_e&doctype=Standard -URIDate 2017-03-09 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_e&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_Equity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The increase (decrease) in the number of ordinary shares issued. [Refer: Ordinary shares [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_iv&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_NumberOfSharesOutstanding
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_IssuedCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_SharePremiumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJanuarySixTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJanuarySevenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJanuaryTwentyTwoTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJanuaryThirtyTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnFebruaryThirdTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnFebruaryThirteenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnFebruarySeventeenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnMarchFourTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnMarchTwentySixTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAprilSevenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAprilNineTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAprilTwentyEightTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnMayElevenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJuneTwentyThirdTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJuneTwentyThirdTwoThousandAndFifteenOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJulyTwentyTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJulyTwentyFourTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJulyTwentyFiveTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJulyTwentyEightTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberEighteenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnOctoberSevenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnDecemberTenthTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnDecemberFourteenTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnMayFiveTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnDecemberTenthTwoThousandAndFifteenOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnDecemberThirtyFirstTwoThousandAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJanuaryFiveTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnFebruarySixteenTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAprilSixTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnMayTwentySevenTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJuneThreeTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJuneSixTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJuneTenTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJulyEighteenTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAugustFourTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAugustTwentyFourTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAugustThirtyTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAugustThirtyOneTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberOneTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberTwoTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberFiveTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberSixTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberSixTwoThousandAndSixteenOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberEightTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberNineTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberTwelveTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberTwelveTwoThousandAndSixteenOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnNovemberTwentyFiveTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAugustTwentyOneTwoThousandAndSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnFebruaryThreeTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnMaySixteenTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnJulyTwelveTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnAugustFourTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberFourteenTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberTwentyNineTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnSeptemberThirtyTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnOctoberTwoTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnDecemberFifteenTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CreationDateAxis=dbvt_ShareCapitalIssuedOnFebruaryNineTwoThousandAndSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |