Detail of Certain Balance Sheet Accounts (Notes)

12 Months Ended

Sep. 30, 2019

Detail of Certain Balance Sheet Accounts [Abstract]

Detail Of Certain Balance Sheet Accounts [Text Block]

7. DETAIL OF CERTAIN BALANCE SHEET ACCOUNTS

Activity in our allowance for doubtful accounts on accounts receivable consists of the following:

	Year Ended September 30,
	2019			2018
Balance at beginning of period	$	868		$	650
Additions to costs and expenses	552			515
Deductions for uncollectible receivables written off, net of recoveries	(236		)	(297		)
Balance at end of period	$	1,184		$	868

Accounts payable and accrued expenses consist of the following:

	Year Ended September 30,
	2019		2018
Accounts payable, trade	$	85,276	75,293
Accrued compensation and benefits	42,828		34,058
Accrued insurance liabilities	6,683		6,202
Other accrued expenses	18,122		15,038
	$	152,909	130,591

Other non-current assets are comprised of the following:

	Year Ended September 30,
	2019		2018
Executive Savings Plan assets	$	763	$	747
Securities and equity investments	408		558
Other	3,767		4,760
Total	$	4,938	$	6,065