Note 16 - Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

	2016					2015					2014
	Options			Weighted average exercise price (€)		Options			Weighted average exercise price (€)		Options			Weighted average exercise price (€)
Outstanding on January 1,		917,188			2.79		1,095,850			2.76		1,310,850			2.70
Granted		575,000			3.22		-			-		-			-
Exercised		-			-		(72,412	)		2.13		(750	)		3.99
Forfeited		(64,750	)		3.30		(106,250	)		2.88		(90,250	)		2.07
Expired		-			-		-			-		(124,000	)		2.60
Outstanding on December 31,		1,427,438			2.94		917,188			2.79		1,095,850			2.76
Exercisable on December 31,		774,938			2.87		724,688			3.03		784,600			3.09
Shares purchase options available for grant on December 31		243,428					232,428					232,428

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

	Outstanding options								Fully vested options (1)
Exercise price (€)	Options		Weighted average remaining contractual life		Weighted average exercise price (€)		Aggregate Intrinsic Value (2)		Options		Weighted average exercise price (€)		Aggregate Intrinsic Value (2)
3.99		327,838		0.8		3.99		-		327,838		3.99		-
2.38		127,100		3.5		2.38		93,004		127,100		2.38		93,004
3.22		560,000		9.3		3.22		-		-		-		-
1.91		362,500		6.0		1.91		435,629		270,000		1.91		324,469
1.88		50,000		3.5		1.88		61,587		50,000		1.88		61,587
1.88 to 3.99		1,427,438		4.6		2.94		590,220		774,938		2.87		479,060

Schedule of Nonvested Share Activity [Table Text Block]

	Options			Weighted average Grant-Date Fair Value (€)
Non-vested at January 1, 2016		192,500			1.32
Granted		575,000			1.67
Vested		(96,250	)		1.32
Forfeited		(18,750	)		1.60
Non-vested at December 31, 2016		652,500			1.62