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Accrued expenses and other current liabilities (Tables)
12 Months Ended
Dec. 31, 2021
Accrued expenses and other current liabilities  
Summary of Accrued expenses and other current liabilities

December 31 ,

    

2021

    

2020

(in thousands)

 

  

 

  

Accrued expenses

$

13,986

$

5,329

Cylinder deposits

 

12,307

 

11,338

Lease obligations

 

1,378

 

2,702

Other current liabilities

 

2,966

 

48

Total

$

30,637

$

19,417