Business Combinations and Divestitures (Tables)

12 Months Ended

Sep. 30, 2020

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Current assets	$	5,660
Property and equipment	489
Operating right of use asset	331
Intangible assets	18,276
Goodwill	10,117
Current liabilities	(3,802)
Operating long-term lease liabilities	(170)
Deferred tax liability	(1,949)
Net assets acquired	$	28,952

Business Acquisition, Pro Forma Information

		Unaudited
		Twelve Months Ended September 30,
		2020		2019
Revenues	$	1,208,020	$	1,118,460
Net income attributable to IES Holdings, Inc.	$	43,285	$	34,967