Accounts and Financing Receivables (Tables)

12 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Trade Accounts Receivable

Trade accounts receivable consisted of the following (in thousands):

	AS OF SEPTEMBER 30,
	2017			2016			2015
Trade accounts receivable	$	10,830		$	17,841		$	15,209
Allowance for doubtful accounts		(1,395	)		(2,449	)		(2,516	)
	$	9,435		$	15,392		$	12,693

Financing Receivables

Financing receivables are reflected in the following table (in thousands):

	SEPTEMBER30, 2017			SEPTEMBER 30, 2016			SEPTEMBER 30, 2015
Promissory notes	$	4,306		$	3,850		$	3,520
Sales-type lease		8,581			—			—
Total financing receivables		12,887			3,850			3,520
Unearned income:
Notes		(90	)		—			—
Sales-type lease		(527	)		—			—
Total unearned income		(617	)		—			—
Total financing receivables, net of unearned income		12,270			3,850			3,520
Allowance for doubtful notes		(1,020	)		(500	)		-
Less current portion		3,055			1,533			2,004
Non-current financing receivables	$	8,195		$	1,817		$	1,516