Goodwill and Other Identifiable Intangible Assets (Details) $ in Thousands	6 Months Ended
	Mar. 31, 2021 USD ($)
Goodwill [Abstract]
Balance	$ 113,059
Acquired goodwill during the six months ended March 31, 2021	38,358
Balance	151,417
Identifiable Intangible Assets [Abstract]
Balance	61,304
Acquired identifiable intangible assets during the six months ended March 31, 2021	12,700
Balance	$ 74,004