Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 96,076	$ 98,251
Restricted cash	600	600
Accounts receivable, net	29,450	19,985
Inventory	23,879	20,507
Prepaid and other current assets	4,785	6,983
Total current assets	154,790	146,326
Property, plant and equipment, net	69	78
Deferred tax assets	11,082	11,082
Other long-term assets	652	741
Intangible asset, net	8,610	8,772
TOTAL ASSETS	175,203	166,999
Current Liabilities:
Accounts payable	15,117	6,062
Accrued expenses and other current liabilities	44,434	37,720
Current portion of exchangeable senior notes, net of discount	192	15,351
Current portion of long-term debt from royalty-bearing instrument	17,004	15,944
Deferred revenue, current	1,197	1,172
Total current liabilities	77,944	76,249
Long-Term Liabilities:
Exchangeable senior notes, net of discount	28,831
Long-term debt from royalty-bearing instrument	82,405	85,155
Deferred revenue, long-term	13,625	13,943
Other long-term liabilities	1,167	710
Total liabilities	203,972	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 March 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; 272,261,602 issued, 270,695,420 outstanding as of March 31, 2017; 270,183,201 issued, 269,363,696 outstanding as of December 31, 2016	208,465	207,166
Additional paid-in capital	967,073	964,914
Treasury stock; 1,566,182 shares as of March 31, 2017; 819,505 shares as of December 31, 2016	(3,726)	(1,498)
Accumulated deficit	(1,224,945)	(1,204,004)
Total stockholders’ deficit	(28,769)	(9,058)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 175,203	$ 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.