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Accrued Liabilities (Tables)
12 Months Ended
Dec. 31, 2022
Accrued Liabilities  
Schedule of accrued liabilities

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December 31, 

​

December 31, 

(in thousands)

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2022

    

2021

Charging equipment and related services

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$

23,088

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$

14,413

Employee compensation

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7,113

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5,044

Other

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9,032

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​

7,621

Total

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$

39,233

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$

27,078