Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 228,001	$ 219,454
Restricted cash	3,918	3,918
Short-term investments	85,232	234,674
Accounts receivable, net	143,942	163,653
Inventory	225,772	234,676
Prepaid and other current assets	32,259	22,352
Total current assets	719,124	878,727
Property, plant and equipment, net	1,137	1,425
Long-term investments	11,395	34,996
Long-term inventory	210,252	121,254
Operating lease right-of-use asset	8,599	7,660
Other long-term assets	456	456
Intangible asset, net	22,274	23,547
TOTAL ASSETS	973,237	1,068,065
Current Liabilities:
Accounts payable	116,312	114,922
Accrued expenses and other current liabilities	243,064	253,111
Current deferred revenue	2,198	2,649
Total current liabilities	361,574	370,682
Long-Term Liabilities:
Long-term deferred revenue	13,810	14,060
Long-term operating lease liability	10,174	8,576
Other long-term liabilities	7,636	7,648
Total liabilities	393,194	400,966
Commitments and contingencies (Note 5)
Stockholders’ Equity:
Common stock, GBP 0.50 par, unlimited authorized; 405,056,452 shares issued, 397,347,051 shares outstanding as of June 30, 2022 ; 404,084,775 shares issued, 396,598,008 shares outstanding as of December 31, 2021	294,659	294,027
Additional paid-in capital	1,869,770	1,855,246
Treasury stock; 7,709,401 shares as of June 30, 2022; 7,486,767 shares as of December 31, 2021	(61,419)	(60,726)
Accumulated deficit	(1,522,967)	(1,421,448)
Total stockholders’ equity	580,043	667,099
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 973,237	$ 1,068,065