Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 18,605	$ 95,938
Restricted cash	200
Accounts receivable, net	991	3,239
Accounts receivable - related parties	5	7,140
Inventory, net	4,995	16,929
Prepaid expenses and other current assets	5,740	4,512
Total current assets	30,536	127,758
Deposits and other assets	2,930	3,042
Property and equipment, net	1,803	2,001
Total assets	35,269	132,801
Current liabilities:
Accounts payable	2,490	4,285
Accrued expenses and other current liabilities	15,371	18,636
Term Loans, net of discount		43,434
Total current liabilities	17,861	126,708
Other liabilities	2,089	2,278
Total liabilities	84,230	141,450
Commitments and contingencies
Stockholders' deficit:
Common stock, $0.001 par value per share; 450,000,000 shares authorized; 204,444,835 and 203,452,812 shares issued and outstanding as of March 31, 2020 and December 31, 2019	204	203
Additional paid-in capital	466,771	464,491
Accumulated deficit	(515,936)	(473,343)
Total stockholders' deficit	(48,961)	(8,649)
Total liabilities and stockholders’ deficit	35,269	132,801
2023 Notes
Current liabilities:
Notes, net of discount	12,412	12,464
2025 Notes
Current liabilities:
Notes, net of discount		$ 60,353
Notes, net of discount	$ 51,868