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Restructuring and Integration (Tables)
 12 Months Ended
Dec. 31, 2020
Restructuring and Related Activities [Abstract]  
Summary of Restructuring and Integration Charges and Reserve Activity
The following table presents restructuring and integration charges for the years ended December 31, 2019 and 2018. There were no restructuring and integration charges for the year ended December 31, 2020.
 Mobile
Solutions		Corporate and
Consolidations		Total
Year Ended December 31, 2019
Site closure and other associated costs$(12)$— $(12)
Total$(12)$— $(12)
Year Ended December 31, 2018
Severance and other employee costs$— $626 $626 
Site closure and other associated costs63 — 63 
Total$63 $626 $689 
The following tables present restructuring and integration reserve activity for the years ended December 31, 2019 and 2018. There was no restructuring and integration reserve activity for the year ended December 31, 2020.
 Reserve Balance
as of
December 31, 2018		ChargesNon-cash
Adjustments		Cash
Reductions		Reserve Balance
as of
December 31, 2019
Severance and other employee costs$129 $— $— $(129)$— 
Site closure and other associated costs24 (12)— (12)— 
Total$153 $(12)$— $(141)$— 
 Reserve Balance
as of
December 31, 2017		ChargesNon-cash
Adjustments		Cash
Reductions		Reserve Balance
as of
December 31, 2018
Severance and other employee costs$— $626 $— $(497)$129 
Site closure and other associated costs1,099 63 (56)(1,082)24 
Total$1,099 $689 $(56)$(1,579)$153