Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 123,163	$ 150,564
Short term investments	25,000
Prepaid expenses	5,396	6,584
Other current assets	6,555	5,416
Total current assets	160,114	162,564
Long-term assets:
Property and equipment, net	19,808	22,266
Operating lease right-of-use assets	28,791	18,378
Restricted cash	3,651	3,651
Other assets	955	148
Total long-term assets	53,205	44,443
Total assets	213,319	207,007
Current liabilities:
Accounts payable	11,168	7,281
Accrued expenses and other current liabilities	11,085	14,861
Current portion of deferred revenue	37,466	37,098
Current portion of operating lease liability	4,363	4,961
Total current liabilities	64,082	64,201
Long-term liabilities:
Deferred revenue, net of current portion	75,256	77,479
Operating lease liability, net of current portion	35,160	24,955
Total long-term liabilities	110,416	102,434
Total liabilities	174,498	166,635
Series A preferred shares, no par value; 3,901,348 shares issued and outstanding at June 30, 2022 and December 31, 2021	7,874	7,874
Shareholders' equity:
Ordinary shares, no par value; 86,724,658 and 59,841,116 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	802,449	749,851
Additional paid-in capital	113,169	87,980
Accumulated other comprehensive income (loss)	(47)	181
Accumulated deficit	(884,624)	(805,514)
Total shareholders' equity	30,947	32,498
Total liabilities, Series A preferred shares and shareholders' equity	$ 213,319	$ 207,007