CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 226,004	$ 252,569
Restricted cash	23,014	10,513
Receivables under development arrangements	350	1,425
Prepaid expenses and other current assets	6,593	8,572
Total current assets	255,961	273,079
Operating lease right-of-use assets	6,266	6,538
Property and equipment, net	54,611	52,114
Intangibles, net	54,150	54,992
Goodwill	21,335	21,335
Restricted cash, long-term	1,844	16,844
Other long-term assets	1,293	1,293
TOTAL ASSETS	395,460	426,195
Current liabilities:
Accounts payable	6,739	8,385
Accrued expenses	25,641	17,434
Long-term debt, current	2,400	2,400
Operating lease obligations	1,545	1,502
Financing lease obligations	2,766	2,785
Deferred revenue	2,791	1,353
Total current liabilities	41,882	33,859
Long-term debt - net of current portion	531	1,124
Operating lease obligations - net of current portion	8,568	8,969
Finance lease obligations - net of current portion	2,402	3,231
Deferred tax, net	1,359	743
Other long-term liabilities	222	12,162
TOTAL LIABILITIES	54,964	60,088
Commitments (See Note 7)
STOCKHOLDERS' EQUITY
#REF!	0	0
Common stock, $0.0001 par value; 500,000,000 shares authorized as of March 31, 2022 and December 31, 2021; 92,835,187 and 92,648,036 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively	9	9
Additional paid-in capital	561,029	557,136
Accumulated deficit	(220,519)	(191,025)
Accumulated other comprehensive loss	(23)	(13)
TOTAL STOCKHOLDERS' EQUITY	340,496	366,107
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 395,460	$ 426,195