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Summary of Significant Accounting Policies (Tables)
 9 Months Ended
Sep. 30, 2019
Accounting Policies [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases
The following table summarizes our minimum commitments under noncancelable operating leases having initial terms in excess of one year at December 31, 2018:
 
Years Ending December 31,
 
2019
 
2020
 
2021
 
2022
 
2023
 
Thereafter
 
Total
Minimum commitments
$
27

 
$
26

 
$
25

 
$
23

 
$
19

 
$
47

 
$
167