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SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended						9 Months Ended
	Jun. 02, 2021	Jun. 01, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020
Stockholders' Equity Note [Abstract]
Number of common shares authorized to be repurchased (up to) (in shares)			4,000,000						4,000,000
Purchases of common shares (in shares)									0	1,500,000
Cash dividends paid (in dollars per share)		$ 0.25
Cash dividends declared (in dollars per share)	$ 0.25		$ 0.25	$ 0.25	$ 0.25	$ 0.25	$ 0.71	$ 0.71
Dividends payable			$ 27,324						$ 27,324		$ 27,226

X

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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Aggregate dividends declared during the period for each share of common stock outstanding.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Number of shares that have been repurchased during the period and are being held in treasury.

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