Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Jun. 30, 2026	Jun. 30, 2025
Cash flows from operating activities:
Net (loss) income		$ (7,400)	$ 28,300
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation		137,030	101,200
Amortization of intangible assets		16,700	22,300
Amortization of financing costs and original issue discount		2,200	2,200
Loss on debt extinguishment	[1]	9,800	700
Deferred taxes		(4,000)	800
Equity-based compensation		13,000	13,600
Realized gain on hedges		(3,000)	(4,100)
Gain on disposal of property and equipment		(11,100)	(10,800)
Other non-cash activities		3,300	8,600
Change in operating assets and liabilities:
Accounts receivable		(11,300)	10,000
Unbilled and deferred revenue		(6,400)	44,700
Other operating assets		1,300	(3,500)
Accounts payable and other operating liabilities		(11,800)	(6,600)
Net cash provided by operating activities		128,300	207,400
Cash flows from investing activities:
Purchase of property and equipment		(178,800)	(195,800)
Proceeds from sale of property and equipment		13,300	14,200
Other investing activities		200	2,400
Net cash (used) by investing activities		(165,300)	(179,200)
Cash flows from financing activities:
Repayments of finance lease obligations		(40,800)	(38,400)
Repayments of receivables financing agreement		(13,000)	(27,900)
Proceeds from receivables financing agreement, net of issuance costs		104,500	14,500
Debt issuance and prepayment costs		(10,400)	(1,300)
Series A preferred stock dividend		(26,900)	(26,900)
Proceeds from issuance of common stock		800	2,800
Repurchase of common stock and distributions		(42,800)	(14,500)
Contingent business acquisition payments		0	(500)
Increase in book overdrafts		5,600	2,500
Other financing activities		(100)	200
Net cash (used) by financing activities		(23,100)	(89,500)
Net change in cash and cash equivalents		(60,100)	(61,300)
Cash and cash equivalents, beginning of period		74,500	140,400
Cash and cash equivalents, end of period		14,400	79,100
Supplemental Cash Flow Information:
Cash paid for income taxes, net		1,600	2,400
Cash paid for interest		49,000	43,300
Accrual for property and equipment		$ 6,300	$ 9,100

[1] Represents losses on the extinguishment of debt related to the Tenth Credit Agreement Amendment, the Eleventh Credit Agreement Amendment, and the Sixth Amendment to the Receivables Financing Agreement, in the nine months ended June 30, 2026, and the Ninth Credit Agreement Amendment, in the nine months ended June 30, 2025 and includes accelerated amortization of deferred financing fees and original issue discount as well as fees paid to lenders and third parties.