Note 8 - Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three months ended June 30,				Six months ended June 30,
	2014		2013		2014		2013
Options to purchase ordinary shares		1,189,782		976,892		1,202,161		976,892
Ordinary share warrant		—		220,595		—		220,595
Preferred ordinary shares (as converted)		—		8,267,787		—		8,267,787
Unvested restricted shares		254,700		—		254,700		—