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Comprehensive Income (Loss)
12 Months Ended
Dec. 31, 2021
Comprehensive Income (Loss)  
Comprehensive Income (Loss)

2. Comprehensive Income (Loss)

Comprehensive income (loss) is comprised of net income (loss) and other comprehensive income (loss). For the years ended December 31, 2021, 2020, and 2019, the only component of other comprehensive income (loss) is net unrealized gain (loss) on marketable debt securities. There were no material reclassifications out of accumulated other comprehensive loss during the year ended December 31, 2021.