Accounts Receivable (Tables)

12 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

The following table summarizes changes in the allowance for doubtful accounts for the fiscal years ended September 30, 2017, 2016 and 2015.

Allowance for Doubtful Accounts (in thousands)	For the Fiscal Years Ended September 30,
	2017			2016			2015
Balance at beginning of period	$	36		$	462		$	116
Provision adjustment - expense, net of recoveries	23			23			556
Write-offs and other adjustments - deductions to receivable balances	(37		)	(449		)	(210		)
Balance at end of period	$	22		$	36		$	462

The components of accounts receivable consisted of the following:

	As of			As of
(in thousands)	September 30, 2017			September 30, 2016
Accounts receivable, gross	$	22,287		$	18,468
Allowance for doubtful accounts	(22		)	(36		)
Accounts receivable, net	$	22,265		$	18,432