Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 192,844	$ 90,332
Accounts receivable, net	9,158	6,021
Other receivable	4,500
Inventory, net	7,767	7,137
Prepaid expenses and other assets	2,511	2,711
Current assets of discontinued operations		14,281
Total current assets	216,780	120,482
Restricted cash, non-current	100	200
Other receivable	4,500
Property and equipment, net	7,144	2,764
Goodwill	2,483	2,483
Other intangible assets, net	61	1,036
Deferred tax asset	1,052	2,486
Noncurrent assets of discontinued operations		14,785
Total assets	232,120	144,236
Liabilities and shareholders’ equity
Accounts payable	2,801	5,552
Accrued liabilities	10,891	7,807
Settlement liability	4,106	4,342
Deferred income	125	36
Current portion of loans payable	85	78
Current liabilities of discontinued operations		4,630
Total current liabilities	18,008	22,445
Long-term portion of loans payable	106	29,856
Settlement liability		3,894
Other liabilities		364
Noncurrent liabilities of discontinued operations		48
Total liabilities	18,114	56,607
Commitments and contingencies (Notes 3, 9, and 16)
Shareholders' equity:
Ordinary shares, £0.006705 nominal value; 38,978,604 and 36,183,293 shares authorized at December 31, 2018 and 2017, respectively, 26,439,334 and 25,661,634 shares issued and outstanding at December 31, 2018 and 2017, respectively	276	269
Additional paid-in capital	303,015	294,613
Accumulated deficit	(80,762)	(201,541)
Accumulated other comprehensive loss	(8,523)	(5,712)
Total shareholders’ equity	214,006	87,629
Total liabilities and shareholders’ equity	$ 232,120	$ 144,236