Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 684,480	$ 764,375
Prepaid expenses and other current assets	4,971	8,028
Total current assets	689,451	772,403
Property and equipment, net	1,896	23
Restricted cash	305	305
Operating lease right-of-use assets, net	2,686	161
Total assets	694,338	772,892
Current liabilities
Accounts payable	13,885	4,534
Accrued expenses and other current liabilities	10,492	52,152
Current portion of operating lease liabilities	730	197
Total current liabilities	25,107	56,883
Operating lease liabilities	2,766
Income taxes payable	6,008	5,932
Total liabilities	33,881	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 June 30, 2022, and December 31, 2021
Common stock, $0.001 par value; 300,000,000 shares authorized as of June 30, 2022 and December 31, 2021; 83,257,591 and 83,102,730 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	83	83
Additional paid-in capital	677,756	653,964
Retained earnings (accumulated deficit)	(17,382)	56,030
Total stockholders’ equity	660,457	710,077
Total liabilities and stockholders’ equity	$ 694,338	$ 772,892