Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 88,483	$ 50,165
Restricted cash	112	200
Accounts receivable, net	7,444	6,823
Inventory	6,473	6,425
Prepaid expenses and other assets	2,718	2,755
Total current assets	105,230	66,368
Restricted cash, non-current	80	192
Property and equipment, net	5,706	4,537
In-process research and development	1,832	2,399
Goodwill	46	50
Other intangible assets, net	278	273
Other assets	19	30
Total assets	113,191	73,849
Current liabilities:
Accounts payable	3,213	2,368
Accrued liabilities	7,886	7,070
Deferred income	1,686	1,993
Current portion of loans payable	127	$ 137
Taxes payable	147
Total current liabilities	13,059	$ 11,568
Long-term portion of loans payable	352	454
Contingent purchase price consideration	1,274	1,218
Total liabilities	14,685	13,240
Shareholders’ equity:
Ordinary shares, £0.006705 nominal value; 36,183,293 shares authorized at September 30, 2015 and December 31, 2014, and 22,538,047 and 17,614,650 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively	242	192
Additional paid-in capital	243,126	186,816
Accumulated deficit	(139,917)	(121,829)
Accumulated other comprehensive loss	(4,945)	(4,570)
Total shareholders’ equity	98,506	60,609
Total liabilities and shareholders’ equity	$ 113,191	$ 73,849