Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	235,298,000	234,779,000
Common stock, shares outstanding	235,298,000	234,779,000
Cumulative non-voting convertible preferred stock par value	$ 0.01	$ 0.01
Cumulative non-voting convertible preferred shares authorized	6,000	6,000
Cumulative non-voting convertible preferred shares issued	3,000	3,000
Cumulative non-voting convertible preferred shares outstanding	3,000	3,000