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Business Realignment Expenses - Business Realignment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Sep. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0	$ 5	$ 0	$ 355	$ 2,165
Employee severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0	0	170	1,980
Occupancy and other costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	5	0	185	185
CAG | Employee severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0	0	0	443
CAG | Occupancy and other costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	5	0	51	51
Corporate & Other | Employee severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0	0	170	1,537
Corporate & Other | Occupancy and other costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0	$ 0	$ 0	$ 134	$ 134

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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