Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 41,122	$ 86,019
Restricted cash	230	392
Short-term investments	16	175
Accounts receivable, net and other receivables	3,385	2,744
Inventory	5,803	682
Prepaid expenses	3,754	1,158
Total current assets	54,310	91,170
Property, plant and equipment, net	2,007	2,474
Intangible assets, net	84	91
Long-term receivables	369	378
Total assets	56,770	94,113
Current liabilities:
Accounts payable	2,041	4,673
Accrued expense and other current liabilities	8,934	11,966
Total current liabilities	10,975	16,639
Non-current liabilities
Long-term debt	7,610	34,502
Other non-current liabilities	1,956	1,698
Total non-current liabilities	9,566	36,200
Total liabilities	20,541	52,839
Commitments and contingencies (Note 12)
Stockholders' Equity:
Ordinary shares, nominal value $0.01, 1,000,000,000 ordinary shares authorized at September 30, 2020; 94,545,116 and 150,006,432 issued and outstanding at December 31, 2019 and September 30, 2020, respectively	1,500	945
Preferred shares, par value $0.01, 100,000,000 shares authorized at September 30, 2020; None issued and outstanding
Additional paid in capital	563,095	517,044
Accumulated other comprehensive income	27	27
Accumulated deficit	(528,393)	(476,742)
Total stockholders' equity	36,229	41,274
Total liabilities and stockholders' equity	$ 56,770	$ 94,113