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Other Current Assets (Details) - USD ($)
$ in Thousands
Jan. 31, 2017
Oct. 31, 2016
Prepaid Expense and Other Assets, Current [Abstract]    
Advance payments to vendors [1] $ 719 $ 1,247
Debt issuance costs [2] 129 152
Notes receivable [3] 0 1,007
Prepaid expenses and other [4] 4,661 7,775
Total $ 5,509 $ 10,181
[1] Advance payments to vendors relate to payments for inventory purchases ahead of receipt.
[2] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjEzMzJlMmU0ZWJmYzRkZGFiYTYxNzAxYzAyMjE1OWFlfFRleHRTZWxlY3Rpb246MUM0MzEyNUU0MzgzNUVEREEyNzRBRDIyODJBRkYwQkEM}
[3] Note receivable was included in the consideration paid for the acquired fuel cell power plant discussed in Note 6.
[4] Primarily relates to other prepaid vendor expenses including insurance, rent and lease payments.