Nature of Operations and Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Slow Moving and Obsolete Inventories (Detail) - USD ($)	12 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Inventory Disclosure [Abstract]
Balance, beginning of year	$ 5,397,000	$ 4,617,000
Charged to cost of sales	2,966,000	1,355,000
Disposal of inventory, net of recoveries	(171,000)	(575,000)
Balance, end of year	$ 8,192,000	$ 5,397,000

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314

Name:	us-gaap_InventoryWriteDown
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration