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Leases (Tables)
 12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Components of Lease Costs
The components of lease costs, which are included in selling, general and administrative expenses in the consolidated statements of income (loss) of years ended December 31, 2020 and 2019 were as follows:

Lease cost:20202019
Operating lease costs (1)
$1,133 $1,515 
Sublease income (2)
(336)(276)
Total lease cost$797 $1,239 

(1) Variable lease costs were immaterial for the years ended December 31, 2020 and 2019.
(2) Represents sublease income received for various office leases.
Maturities of Operating Lease Liabilities
Maturities of the Company’s operating lease liabilities were as follows:

Maturities:Operating Leases
2021$578 
2022590 
2023602 
2024614 
2025206 
Thereafter— 
Total lease payments2,590 
Less: interest276 
Present value of lease liabilities$2,314