Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 181,270	$ 192,844
Accounts receivable, net	13,669	9,158
Other receivables	4,660	4,500
Inventory, net	11,096	7,767
Prepaid expenses and other assets	5,186	2,511
Total current assets	215,881	216,780
Restricted cash, non-current	100	100
Other receivable		4,500
Property and equipment, net	7,095	7,144
Operating lease right-of-use assets	7,443
Goodwill	2,483	2,483
Net carrying amount	87	61
Deferred tax asset	2,163	1,052
Total assets	235,252	232,120
Liabilities and shareholders’ equity
Accounts payable	2,420	2,801
Accrued liabilities	10,396	10,891
Current portion of operating lease liability	984
Settlement liability		4,106
Deferred income	19	125
Current portion of loans payable		85
Total current liabilities	13,819	18,008
Long-term portion of operating lease liability	7,710
Long-term portion of loans payable	32	106
Total liabilities	21,561	18,114
Commitments and contingencies (Note 17)
Shareholders' equity:
Ordinary shares, £0.006705 nominal value; 39,824,703 and 38,978,604 shares authorized at December 31, 2019 and 2018, respectively, 26,419,961 and 26,439,334 shares issued and outstanding at December 31, 2019 and 2018, respectively	276	276
Additional paid-in capital	304,909	303,015
Accumulated deficit	(84,033)	(80,762)
Accumulated other comprehensive loss	(7,461)	(8,523)
Total shareholders’ equity	213,691	214,006
Total liabilities and shareholders’ equity	$ 235,252	$ 232,120