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Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Lease Payments Under Operating Leases

The future minimum lease payments required under operating leases in effect at June 30, 2019 were as follows (in thousands):

 

 

Year ending:

 

 

 

 

2019 (remaining six months)

 

$

539

 

2020

 

 

772

 

2021

 

 

339

 

2022

 

 

104

 

2023

 

 

72

 

2024

 

 

33

 

 

 

$

1,859