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Accounts Receivable, Net and Unbilled Receivables
 3 Months Ended
Jan. 31, 2019
Receivables [Abstract]  
Accounts Receivable, Net and Unbilled Receivables

Note 4.  Accounts Receivable, Net and Unbilled Receivables

Accounts receivable, net and Unbilled receivables as of January 31, 2019 and October 31, 2018 consisted of the following:

 

 

 

January 31,

 

 

October 31,

 

 

 

2019

 

 

2018

 

Commercial Customers:

 

 

 

 

 

 

 

 

Amount billed

 

$

7,809

 

 

$

7,415

 

Unbilled receivables (1)

 

 

11,194

 

 

 

10,632

 

 

 

 

19,003

 

 

 

18,047

 

Advanced Technologies (including U.S. government(2)):

 

 

 

 

 

 

 

 

Amount billed

 

 

512

 

 

 

1,865

 

Unbilled receivables

 

 

1,193

 

 

 

3,127

 

 

 

 

1,705

 

 

 

4,992

 

Accounts receivable, net and unbilled receivables

 

$

20,708

 

 

$

23,039

 

 

(1)

Additional long-term unbilled receivables of $17.4 million and $9.4 million are included within “Other Assets” as of January 31, 2019 and October 31, 2018, respectively. 

(2)

Total U.S. government accounts receivable, including unbilled receivables, outstanding as of January 31, 2019 and October 31, 2018 were $0.8 million and $2.3 million, respectively.

The Company bills customers for power plant and power plant component sales based on certain contractual milestones being reached.  The Company bills service agreements based on the contract price and billing terms of the contracts. Generally, the Company’s Advanced Technologies contracts are billed based on actual revenues recorded, typically in the subsequent month.  Some Advanced Technologies contracts are billed based on contractual milestones or costs incurred.  Unbilled receivables relate to revenue recognized on customer contracts that have not been billed.  Accounts receivable are presented net of an allowance for doubtful accounts of $0.3 million and $0.2 million as of January 31, 2019 and October 31, 2018, respectively. Uncollectible accounts receivable are charged against the allowance for doubtful accounts when all collection efforts have failed and it is deemed unlikely that the amount will be recovered.