Annual report pursuant to Section 13 and 15(d)

Supplemental Cash Flow Information

v3.22.2
Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
Cash paid for income taxes was $2, $7 and $2 in 2021, 2020 and 2019, respectively. Cash paid for interest and noncash investing and financing activities were as follows:
2021 2020 2019
Noncash investing and financing activities:
Property and equipment included in accounts payable
 $ 4,532  $ 1,454  $ 168 
Vesting of early exercised stock options
 182  388  602 
Non-cash acquisition
 1,939,813  —  (29,905)
Cash, cash equivalents, and restricted cash at end of year:
Cash and cash equivalents
 $ 1,610,135  $ 387,346  $ 246,490 
Restricted cash
 16,112  12,482  482 
Total cash, cash equivalents, and restricted cash
 $ 1,626,247  $ 399,828  $ 246,972