CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenue	$ 135,501	$ 122,754
Costs and expenses:
Selling	5,348	4,501
General and administrative	19,927	28,298
Depreciation and amortization of intangible assets	14,250	13,263
Other operating expense	3,319	3,639
Goodwill impairment loss	0	66,367
Operating loss	(9,371)	(90,578)
Other (expense) income:
Interest expense	(11,364)	(10,450)
Other income (expense)	1,413	(1,878)
Loss before income taxes	(19,322)	(102,906)
Income tax benefit	3,494	15,974
Consolidated net loss	(15,828)	(86,932)
Less: Net (loss) income attributable to noncontrolling interests	(440)	391
Net loss attributable to common shareholders	$ (15,388)	$ (87,323)
Earnings Per Share [Abstract]
Net loss attributable to common shareholders, basic (in dollars per share)	$ (0.60)	$ (3.41)
Net loss attributable to common shareholders, diluted (in dollar per share)	$ (0.60)	$ (3.41)
Weighted-average number of common shares outstanding:
Basic (in shares)	25,764	25,603
Diluted (in shares)	25,764	25,603
Service
Revenue	$ 53,863	$ 50,048
Costs and expenses:
Cost of revenue (excluding amortization of intangible assets)	39,077	34,001
Product
Revenue	81,638	72,706
Costs and expenses:
Cost of revenue (excluding amortization of intangible assets)	$ 62,951	$ 63,263