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GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) $ in Thousands	6 Months Ended
	Mar. 31, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning	$ 280,678
Goodwill attributable to preliminary purchase price adjustments during the six months ended March 31, 2025	0
Goodwill, ending	280,678
Public Sector
Goodwill [Roll Forward]
Goodwill, beginning	233,850
Goodwill attributable to preliminary purchase price adjustments during the six months ended March 31, 2025	0
Goodwill, ending	233,850
Healthcare
Goodwill [Roll Forward]
Goodwill, beginning	46,828
Goodwill attributable to preliminary purchase price adjustments during the six months ended March 31, 2025	0
Goodwill, ending	46,828
Other
Goodwill [Roll Forward]
Goodwill, beginning	0
Goodwill attributable to preliminary purchase price adjustments during the six months ended March 31, 2025	0
Goodwill, ending	$ 0

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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X

- Definition

Amount of increase (decrease) from measurement period adjustment of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

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