Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 113,195	$ 84,709
Restricted cash	6,981	8,119
Investment debt securities, available-for-sale	377,656	334,980
Accounts receivable, net of allowance for credit losses of $58 and $58, respectively	26,168	28,337
Prepaid expenses and other current assets	21,370	21,735
Current assets of discontinued operations	0	30,138
Total current assets	545,370	508,018
Fixed assets, net	1,276	3,281
Inventory	6,274	7,883
Security deposits	1,125	4,284
Other assets	5,359	3,557
Total assets	559,404	527,023
Current liabilities:
Accounts payable, accrued expenses and other liabilities	109,888	103,780
Short-term interest payable	2,244	8,601
Current portion of long-term debt	109,452	0
Current liabilities of discontinued operations	0	55,780
Total current liabilities	221,584	168,161
Long-term liabilities:
Long-term debt	222,856	539,782
Long-term other liabilities	7,288	3,042
Total liabilities	451,728	710,985
Commitments and contingencies (Note 16)
Stockholders' equity (deficit):
Common stock par value $0.001 per share; 90,000,000 shares authorized; 41,417,127 and 29,572,953 shares issued and outstanding as of September 30, 2022 and December 31, 2021, respectively	41	30
Additional paid-in capital	2,231,667	2,308,653
Accumulated other comprehensive loss, net	(7,969)	(2,873)
Accumulated deficit	(2,116,063)	(2,489,772)
Total stockholders' equity (deficit)	107,676	(183,962)
Total liabilities and stockholders' equity (deficit)	$ 559,404	$ 527,023