Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 58,007	$ 76,494
Restricted cash	146	87
Accounts receivable, net	5,211	4,754
Inventory	6,515	5,450
Prepaid expenses and other	2,155	2,242
Total current assets	72,034	89,027
Restricted cash, non-current	246	362
Property and equipment, net	4,463	2,964
In-process research and development	2,497
Goodwill	55
Other intangible assets, net	295	331
Other assets	26	60
Total assets	79,616	92,744
Liabilities and shareholders’ equity
Accounts payable	2,901	2,310
Accrued liabilities	6,177	6,936
Deferred income	1,699	1,540
Current portion of loans payable	170	170
Taxes payable		177
Total current liabilities	10,947	11,133
Long-term portion of loans payable	449	563
Contingent purchase price consideration	1,234
Other liabilities		296
Total liabilities	12,630	11,992
Shareholders’ equity:
Ordinary shares, £0.006705 nominal value; 40,103,528 and 25,189,285 shares authorized at September 30, 2014 and December 31, 2013, respectively, and 17,611,348 and 17,255,267 shares issued and outstanding at September 30, 2014 and December 31, 2013, respectively	192	188
Additional paid-in capital	186,053	183,967
Accumulated deficit	(115,137)	(99,655)
Accumulated other comprehensive loss	(4,122)	(3,748)
Total shareholders’ equity	66,986	80,752
Total liabilities and shareholders’ equity	$ 79,616	$ 92,744