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Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2022
Oct. 31, 2021
Accrued Liabilities    
Accrued payroll and employee benefits $ 2,723 $ 2,544
Accrued product warranty cost [1] 297 72
Accrued service agreement and PPA costs [2] 8,667 9,112
Accrued legal, taxes, professional and other 14,301 4,371
Accrued liabilities $ 25,988 $ 16,099
[1] The increase in accrued product warranty cost reflects the costs associated with the warranties provided under the POSCO Energy Settlement Agreement. Product warranty expense for the three months ended January 31, 2022 and 2021 was $0.2 million and $0.03 million, respectively.
[2] Accrued service agreement costs include loss accruals on service agreements of $5.8 million and $6.5 million as of January 31, 2022 and October 31, 2021, respectively. The decrease is the result of realization of losses for the quarter ended January 31, 2022.  The accruals for performance guarantees on service agreements and PPAs increased from $2.5 million as of October 31, 2021 to $2.7 million as of January 31, 2022.