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STOCK COMPENSATION - Effects to Net Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Tax effects of employee's stock-based compensation expense recognized income	$ 1,562	$ 2,567	$ 3,230
Total employee stock-based compensation expense recognized in income, net of tax effects of $1,562, $2,567, and $3,230, respectively	$ 5,290	$ 7,656	$ 9,716

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Amount, after tax, of expense for award under share-based payment arrangement.

+ References

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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