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Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Prepaid expenses and other current assets    
Prepaid LNG $ 189 $ 367
Prepaid insurance 698 174
Prepaid supplier expenses 229 211
Other receivables 1,655 672
Deposits 347 578
Other 465 113
Prepaid expenses and other current expenses $ 3,583 $ 2,115