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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Schedule of Estimated Fair Value of Options Valuation Assumptions

The following table provides the significant assumptions used in determining the estimated grant date fair value of the stock options granted in fiscal 2022. No grants were awarded in fiscal 2023 and 2021.

Expected term (in years)			4.45
Expected volatility			64.42		%
Expected dividend yield			0.20		%
Risk-free rate			3.23		%

Schedule of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis

Assets and liabilities that are measured at fair value on a nonrecurring basis are as follows (in thousands):

												Fair Value at Reporting Date Using
Description						September 30, 2023						Quoted Prices in Active Markets for Identical Asset (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Property and equipment*						$	21,454					$	—					$	—					$	21,454
Indefinite-lived intangibles*						43,948						—						—						43,948
Indefinite-lived intangibles**						2,996						—						—						2,996
Definite-lived intangibles**						8,220						—						—						8,220
Goodwill*						6,881						—						—						6,881
Goodwill**						1,084						—						—						1,084
Current assets*						696						—						—						696

												Fair Value at Reporting Date Using
Description						September 30, 2022						Quoted Prices in Active Markets for Identical Asset (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Property and equipment*						$	32,904					$	—					$	—					$	32,904
Property and equipment**						3,432						—						—						3,432
Indefinite-lived intangibles*						50,454						—						—						50,454
Definite-lived intangibles*						27,986						—						—						27,986
Goodwill*						20,608						—						—						20,608
Goodwill**						663						—						—						663
Current assets*						681						—						—						681

*Certain assets and liabilities measured at the acquisition dates.

** Measured at year-end impairment testing.

						Unrealized Gain (Loss/Impairments) Recognized
						Years Ended September 30,
Description						2023						2022						2021
Goodwill						$	(4,239)					$	(566)					$	(6,307)
Property and equipment, net (including held for sale)						(58)						(1,029)						(2,202)
Indefinite-lived intangibles						(5,516)						(293)						(5,296)
Definite-lived intangibles						(1,813)						—						—
Operating lease right-of-use assets						(1,003)						—						—
Other assets (equity securities)						—						—						(84)

Schedule of Significant Unobservable Inputs Used in Level 3 Fair Value Measurement

The significant unobservable inputs used in our level 3 fair value measurements are as follows:

																		Range (Weighted Average)
Areas						Valuation Techniques						Unobservable Input						2023						2022						2021
Property and equipment						Discounted cash flow						EBITDA multiple						1x - 12x (11x)						9x - 10x (10x)						8x (8x)
												Revenue/EBITDA growth rate						0% - 2.5% (1.25%)						0% - 2.5% (1.5%)						0% - 2.5% (1%)
												Weighted average cost of capital						11% (11.0%)						12.5% (12.5%)						13% - 17% (15%)
Goodwill						Discounted cash flow						EBITDA multiple						9x - 12x (12x)						8x - 10x (9x)						8x (8x)
												Revenue/EBITDA growth rate						0% - 2.5% (2.5%)						0% - 2.5% (1.5%)						0% - 2.5% (1%)
												Weighted average cost of capital						11% (11%)						12.5% (12.5%)						13% - 17% (15%)
SOB licenses						Multiperiod excess earnings						EBITDA multiple						12x (12x)						9x - 10x (10x)						8x (8x)
												Revenue/EBITDA growth rate						0% - 2.5% (2.5%)						0% - 2.5% (1.5%)						0% - 2.5% (1%)
												Weighted average cost of capital						11% (11%)						12.5% (12.5%)						13% - 17% (15%)
												Contributory asset charges rate						10% - 21.5% (15%)						0.5% - 7.4% (2.3%)						1.4% - 8.0% (4%)
Tradename						Relief-from-royalty method						Revenue growth rate						0% - 2.5% (2.5%)						0% - 2.5% (1.5%)						0% - 2.5% (2.5%)
												Terminal multiple						12x (12x)						9x - 10x (9x)						8x (8x)
												Royalty rate						3% - 6% (4.7%)						3.5% - 4.5% (4%)						None
												Weighted average cost of capital						11% (11%)						12.5% (12.5%)						15% (15%)
Operating lease right-of-use assets						Discounted cash flow						EBITDA growth rate						1.5% - 2.5% (2.3%)						0% - 2.5% (1.5%)						0% - 2.5% (1%)
												Weighted average cost of capital						11% (11%)						12.5% (12.5%)						13% - 17% (15%)
Business combinations						Various*						Growth rate						0% - 11.2% (5.5%)						2.5% - 10% (4.8%)						None
												Weighted average cost of capital						16.5% - 18.0% (17.8%)						15% - 19.5% (18.1%)						None
												Internal rate of return						16.5% - 30.0% (22.4%)						15% - 21.5% (19.4%)						None
												Contributory asset charges rate						15.6% - 21.5% (16.3%)						8.5% - 10.2% (9.3%)						None

* Includes all of the valuation techniques for each of the fair valued assets above as of each acquisition date.

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Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.

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Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3).

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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