Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - £ / shares	Jun. 30, 2015	Jan. 29, 2015	Dec. 31, 2014
Ordinary shares, nominal value (in Great Britain Pound Sterling per share)	£ 0.006705	£ 0.006705	£ 0.006705
Ordinary shares, shares authorized (in shares)	36,183,293		36,183,293
Ordinary shares, shares issued (in shares)	22,532,344		17,614,650
Ordinary shares, shares outstanding (in shares)	22,532,344		17,614,650