Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 20,041	$ 47,659
Restricted cash	122	175
Short-term investments		16
Accounts receivable, net and other receivables	12,361	12,751
Inventory	15,535	14,509
Prepaid expenses	6,237	5,155
Total current assets	54,296	80,265
Property and equipment, net	206	233
Intangible assets, net	13	31
Other non-current assets	378	380
Total assets	54,893	80,909
Current liabilities:
Current portion of long-term debt	6,624	3,765
Accounts payable	1,073	4,372
Accrued expense and other current liabilities	11,635	13,829
Deferred revenue		374
Total current liabilities	19,332	22,340
Non-current liabilities:
Long-term debt	512	4,265
Other non-current liabilities	444	954
Total non-current liabilities	956	5,219
Total liabilities	20,288	27,559
Commitments and contingencies (Note 12)
Stockholders' equity:
Ordinary shares, nominal value $0.01, 300,000,000 ordinary shares authorized at June 30, 2022; 64,580,211 and 56,715,306 issued and outstanding at June 30, 2022 and December 31, 2021, respectively	646	567
Preferred shares, nominal value $0.01, 100,000,000 shares authorized at June 30, 2022; None issued and outstanding
Additional paid in capital	652,501	648,432
Accumulated other comprehensive income	27	27
Accumulated deficit	(618,569)	(595,676)
Total stockholders' equity	34,605	53,350
Total liabilities and stockholders' equity	$ 54,893	$ 80,909