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Contingencies and Commitments (Tables)
6 Months Ended
Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]  
Lease, Cost
Leases
JuneDecember
20212020
Right-of-use assets $404 $423 
Lease liabilities, current $109 $109 
Lease liabilities, non-current $306 $325 
Other information:
Weighted-average remaining lease term 5.8 years5.6 years
Weighted-average discount rate2.74 %2.57 %
Three MonthsSix Months
2021202020212020
Operating lease cost$31 $31 $67 $67