Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 705,545	$ 764,375
Prepaid expenses and other current assets	7,687	8,028
Total current assets	713,232	772,403
Property and equipment, net	762	23
Restricted cash	305	305
Operating lease right-of-use assets, net	2,890	161
Total assets	717,189	772,892
Current liabilities
Accounts payable	3,657	4,534
Accrued expenses and other current liabilities	24,840	52,152
Current portion of operating lease liabilities	113	197
Total current liabilities	28,610	56,883
Operating lease liabilities	2,763
Income taxes payable	5,932	5,932
Total liabilities	37,305	62,815
Commitments and contingencies (see Note 11)
Stockholders’ equity:
Preferred stock, $0.001 par value per share; 10,000,000 shares authorized; no shares issued and outstanding as of March 31, 2022, and December 31, 2021
Common stock, $0.001 par value; 300,000,000 shares authorized as of March 31, 2022 and December 31, 2021; 83,257,591 and 83,102,730 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively	83	83
Additional paid-in capital	665,848	653,964
Retained earnings	13,953	56,030
Total stockholders’ equity	679,884	710,077
Total liabilities and stockholders’ equity	$ 717,189	$ 772,892