Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 139,942	$ 88,497
Accounts receivable	7,000
Prepaid expenses	7,514	7,932
Other current assets	4,116	2,108
Total current assets	158,572	98,537
Long-term assets:
Property and equipment, net of accumulated depreciation of $41,596 and $37,846 as of September 30, 2023 and December 31, 2022, respectively	13,770	17,284
Operating lease right-of-use assets	23,738	26,843
Restricted cash	3,683	3,660
Other assets	155	62
Total long-term assets	41,346	47,849
Total assets	199,918	146,386
Current liabilities:
Accounts payable	12,608	16,915
Accrued expenses and other current liabilities	12,624	17,552
Current portion of deferred revenue	68,251	31,558
Current portion of operating lease liability	6,497	5,496
Total current liabilities	99,980	71,521
Long-term liabilities:
Deferred revenue, net of current portion	105,380	79,774
Operating lease liability, net of current portion	27,170	32,118
Other liabilities		190
Total long-term liabilities	132,550	112,082
Total liabilities	232,530	183,603
Series A preferred shares, no par value; 3,901,348 shares issued and outstanding at September 30, 2023 and December 31, 2022	7,874	7,874
Shareholders' equity (deficit):
Ordinary shares, no par value; 99,011,901 and 86,924,643 shares issued an outstanding at September 30, 2023 and December 31, 2022, respectively	841,405	802,833
Additional paid-in capital	126,885	119,442
Accumulated other comprehensive loss	(182)	(29)
Accumulated deficit	(1,008,594)	(967,337)
Total shareholders' deficit	(40,486)	(45,091)
Total liabilities, Series A preferred shares and shareholders' deficit	$ 199,918	$ 146,386