Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 85,464	$ 98,251
Restricted cash	600	600
Accounts receivable, net	37,475	19,985
Inventory	24,814	20,507
Prepaid and other current assets	2,076	6,983
Total current assets	150,429	146,326
Property, plant and equipment, net	52	78
Deferred tax assets	11,082	11,082
Other long-term assets	173	741
Intangible asset, net	8,449	8,772
TOTAL ASSETS	170,185	166,999
Current Liabilities:
Accounts payable	16,455	6,062
Accrued expenses and other current liabilities	49,102	37,720
Current portion of exchangeable senior notes, net of discount	455	15,351
Current portion of long-term debt from royalty-bearing instrument	18,833	15,944
Deferred revenue, current	1,447	1,172
Total current liabilities	86,292	76,249
Long-Term Liabilities:
Exchangeable senior notes, net of discount	28,884
Long-term debt from royalty-bearing instrument	79,283	85,155
Deferred revenue, long-term	13,332	13,943
Other long-term liabilities	1,158	710
Total liabilities	208,949	176,057
Commitments and contingencies (Note 6)
Stockholders’ Deficit:
Series A Convertible Preferred Stock, £0.05 par, unlimited authorized; 328,184,640 shares issued and outstanding as of June 30, 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; 272,401,857 issued, 270,792,058 outstanding as of June 30, 2017; 270,183,201 issued, 269,363,696 outstanding as of December 31, 2016	208,556	207,166
Additional paid-in capital	970,797	964,914
Treasury stock; 1,609,799 shares as of June 30, 2017; 819,505 shares as of December 31, 2016	(3,902)	(1,498)
Accumulated deficit	(1,238,579)	(1,204,004)
Total stockholders’ deficit	(38,764)	(9,058)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 170,185	$ 166,999

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.