Note 15. Stockholders' Equity (Notes)

12 Months Ended

Dec. 31, 2021

Class of Stock Disclosures [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

15. Stockholders’ Equity

Preferred Stock

As of December 31, 2021 and 2020, we had authorized 30,000,000 shares of undesignated preferred stock, $0.001 par value, none of which was issued and outstanding. Our board of directors is authorized to determine the rights, preferences, and restrictions on any series of preferred stock that we may issue.

Common Stock

As of December 31, 2021 and 2020, we had authorized 500,000,000 shares of common stock, $0.001 par value, of which 106,332,315 and 105,980,466 shares, respectively, were issued and outstanding. Each share of common stock is entitled to a single vote. We have not declared or paid any dividends through December 31, 2021.