Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 673,207	$ 249,227
Restricted cash	3,904	1,500
Accounts receivable, net	103,583	66,523
Inventory	54,557	57,802
Prepaid and other current assets	12,859	2,945
Total current assets	848,110	377,997
Property, plant and equipment, net	2,124	63
Operating lease right-of-use asset	8,633
Other long-term assets	1,074	174
Intangible asset, net	6,996	7,480
TOTAL ASSETS	866,937	385,714
Current Liabilities:
Accounts payable	42,042	37,632
Accrued expenses and other current liabilities	134,542	84,171
Current portion of long-term debt from royalty-bearing instrument	51,166	34,240
Deferred revenue, current	1,962	1,220
Total current liabilities	229,712	157,263
Long-Term Liabilities:
Long-term debt from royalty-bearing instrument	8,878	46,108
Deferred revenue, long-term	17,617	19,490
Long-term operating lease liability	9,432
Other long-term liabilities	5,402	10,523
Total liabilities	271,041	233,384
Commitments and contingencies (Note 6)
Stockholders’ Equity:
Series A Convertible Preferred Stock, £0.05 par, unlimited authorized; 289,317,460 shares issued and outstanding as of September 30, 2019 and December 31, 2018 (equivalent to 28,931,746 ordinary shares upon future consolidation and redesignation at a 10:1 ratio)	21,850	21,850
Common stock, £0.50 par, unlimited authorized; 361,368,945 issued, 357,527,330 outstanding as of September 30, 2019; 329,110,863 issued, 325,850,013 outstanding as of December 31, 2018	266,878	246,663
Additional paid-in capital	1,745,946	1,282,762
Treasury stock; 3,841,615 shares as of September 30, 2019; 3,260,850 shares as of December 31, 2018	(20,533)	(10,413)
Accumulated deficit	(1,418,245)	(1,388,532)
Total stockholders’ equity	595,896	152,330
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 866,937	$ 385,714