CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Revenue	$ 119,035	$ 151,463	$ 254,536	$ 274,217
Costs and expenses:
Selling	5,403	4,764	10,751	9,265
General and administrative	19,796	28,293	39,723	56,591
Depreciation and amortization of intangible assets	14,155	12,990	28,405	26,253
Other operating expense	30,440	4,812	33,759	8,451
Goodwill impairment loss	0	0	0	66,367
Operating loss	(43,116)	(2,125)	(52,487)	(92,703)
Other (expense) income:
Interest expense	(11,088)	(10,515)	(22,452)	(20,965)
Other (expense) income	(239)	545	1,174	(1,333)
Loss before income taxes	(54,443)	(12,095)	(73,765)	(115,001)
Income tax benefit	6,364	2,466	9,858	18,440
Consolidated net loss	(48,079)	(9,629)	(63,907)	(96,561)
Less: Net income (loss) attributable to noncontrolling interests	0	365	(440)	756
Net loss attributable to common shareholders	$ (48,079)	$ (9,994)	$ (63,467)	$ (97,317)
Earnings Per Share [Abstract]
Net loss attributable to common shareholders, basic (in dollars per share)	$ (1.86)	$ (0.39)	$ (2.46)	$ (3.79)
Net loss attributable to common shareholders, diluted (in dollar per share)	$ (1.86)	$ (0.39)	$ (2.46)	$ (3.79)
Weighted-average number of common shares outstanding:
Basic (in shares)	25,831	25,687	25,797	25,645
Diluted (in shares)	25,831	25,687	25,797	25,645
Service
Revenue	$ 56,961	$ 58,752	$ 110,824	$ 108,800
Costs and expenses:
Cost of revenue (excluding depreciation and amortization of intangible assets)	38,663	36,803	77,740	70,804
Product
Revenue	62,074	92,711	143,712	165,417
Costs and expenses:
Cost of revenue (excluding depreciation and amortization of intangible assets)	$ 53,694	$ 65,926	$ 116,645	$ 129,189