The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Goodwill and Intangible Assets - Narrative (Details) - USD ($)		12 Months Ended
	May 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets		$ 1,705,000	$ 2,168,000
Goodwill [Line Items]
Goodwill impairment		0	0
Goodwill		$ 12,020,000	12,170,000	$ 11,748,000
Cleveland
Goodwill [Line Items]
Goodwill impairment	$ 0
Goodwill			$ 3,493,000