Note 15 - Other Long-term Liabilities - Provision Presentation According to ASC 715 (Details) - EUR (€) € in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Retirement Indemnity Plans, France [Member]
Non-current liabilities	€ 840	€ 694
Current liabilities	2
Accumulated other comprehensive income (loss)	(169)	(82)
Total	673	612	€ 550
Non-current liabilities	840	694
Current liabilities	2
Defined Benefit Retirement Indemnity Plans, Japan [Member]
Non-current liabilities	1,138	902
Current liabilities	24	4
Accumulated other comprehensive income (loss)	(465)	(314)
Total	697	592	€ 443
Non-current liabilities	1,138	902
Current liabilities	€ 24	€ 4

The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The aggregate net amount recognized in the balance sheet associated with the defined benefit plan(s). Will normally be the same as the Defined Benefit Plan, Funded Status of Plan, Total.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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