Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 73,637	$ 98,251
Restricted cash	600	600
Accounts receivable, net	45,318	19,985
Inventory	30,260	20,507
Prepaid and other current assets	3,455	6,983
Total current assets	153,270	146,326
Property, plant and equipment, net	28	78
Deferred tax assets	0	11,082
Other long-term assets	174	741
Intangible asset, net	8,126	8,772
TOTAL ASSETS	161,598	166,999
Current Liabilities:
Accounts payable	25,155	6,062
Accrued expenses and other current liabilities	58,902	37,720
Current portion of exchangeable senior notes, net of discount	481	15,351
Current portion of long-term debt from royalty-bearing instrument	22,348	15,944
Deferred revenue, current	1,644	1,172
Total current liabilities	108,530	76,249
Long-Term Liabilities:
Exchangeable senior notes, net of discount	28,992
Long-term debt from royalty-bearing instrument	70,834	85,155
Deferred revenue, long-term	17,192	13,943
Other long-term liabilities	1,150	710
Total liabilities	226,698	176,057
Commitments and contingencies (Note 9)
Stockholders’ Deficit:
Series A Convertible Preferred Stock, £0.05 par, unlimited authorized; 328,184,640 shares issued and outstanding as of December 31, 2017 and December 31, 2016 (equivalent to 32,818,464 ordinary shares upon future consolidation and redesignation at a 10:1 ratio)	24,364	24,364
Common stock, £0.50 par, unlimited authorized; 272,719,044 issued, 271,022,011 outstanding as of December 31, 2017; 270,183,201 issued, 269,363,696 outstanding as of December 31, 2016	208,768	207,166
Additional paid-in capital	977,866	964,914
Treasury stock; 1,697,033 shares as of December 31, 2017; 819,505 shares as of December 31, 2016	(4,229)	(1,498)
Accumulated deficit	(1,271,869)	(1,204,004)
Total stockholders’ deficit	(65,100)	(9,058)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 161,598	$ 166,999