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Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Sep. 30, 2019
Retirement Benefits [Abstract]
Defined Contribution Plan, Cost	$ 697	$ 600	$ 1,082	$ 1,023
Liability, Defined Benefit Plan	$ 709		$ 709		$ 738

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Amount of cost for defined contribution plan.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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