Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 72,491	$ 106,961
Restricted cash	600	600
Accounts receivable, net	17,639	13,826
Inventory	20,306	18,985
Prepaid and other current assets	5,476	3,152
Total current assets	116,512	143,524
Property, plant and equipment, net	137	243
Deferred tax assets	21,718	19,872
Other long-term assets	174	174
Intangible asset, net	9,095	9,417
TOTAL ASSETS	147,636	173,230
Current Liabilities:
Accounts payable	14,811	10,832
Accrued expenses and other current liabilities	31,052	24,226
Current portion of long-term debt	30,816	14,742
Deferred revenue, current	1,172	923
Total current liabilities	77,851	50,723
Long-Term Liabilities:
Exchangeable senior notes, net of discount	125,644	136,734
Long-term debt	90,150	91,512
Long-term debt derivative liabilities	3,610	8,170
Deferred revenue, long-term	14,529	13,308
Other long-term liabilities	268	335
Total liabilities	312,052	300,782
Commitments and contingencies (Note 7)
Stockholders' Deficit:
Series A Convertible Preferred Stock, £0.05 par, unlimited authorized; 328,184,640 shares issued and outstanding as of June 30, 2016 and December 31, 2015 (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; 185,274,511 issued, 184,551,164 outstanding as of June 30, 2016; 183,577,765 issued, 183,403,263 outstanding as of December 31, 2015	151,183	149,978
Additional paid-in capital	822,013	816,171
Treasury stock; 723,347 shares as of June 30, 2016; 174,502 shares as of December 31, 2015	(1,197)	(411)
Accumulated deficit	(1,160,779)	(1,117,654)
Total stockholders' deficit	(164,416)	(127,552)
TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIT	$ 147,636	$ 173,230

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.