Consolidated balance sheets (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Series 1 Common Stock
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	72,311,000	65,406,000
Common stock, shares outstanding	72,311,000	65,406,000
Series 2 Common Stock
Common stock, shares authorized	5,051,000	5,051,000
Common stock, shares issued	0	4,106,000
Common stock, shares outstanding	0	4,106,000