Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Financial Assets, Temporary Equity, and Liabilities Not Measured at Fair Value in the Consolidated Balance Sheet

The tables below present our estimates of fair value of financial assets and liabilities that were not measured at fair value:

	Carrying Value		Estimated Fair Value
	December 31, 2021		December 31, 2021		Fair Value Measurement Using
(in thousands)					Level 1		Level 2		Level 3
Financial assets:
2.89% promissory note receivable due April 2024	$	1,190	$	1,190	$	—	$	—	$	1,190
Investments in unconsolidated affiliates	42,513		52,671		45,650		—		7,021
Other investments	16,500		16,500		—		—		16,500
Financial liabilities:
2024 Convertible Notes	$	142,106	$	147,063	$	—	$	147,063	$	—
2025 Convertible Notes	169,738		155,060		—		155,060		—

	Carrying Value		Estimated Fair Value
	December 31, 2020		December 31, 2020		Fair Value Measurement Using
(in thousands)					Level 1		Level 2		Level 3
Financial assets:
2.89% promissory note receivable due April 2024	1,156		1,156		—		—		1,156
Investments in unconsolidated affiliates	31,773		44,716		37,039		—		7,677
Financial liabilities:
2024 Convertible Notes	$	118,736	$	134,838	$	—	$	134,838	$	—
2025 Convertible Notes	134,983		138,000		—		138,000		—
8.5% unsecured debt due 2024	816		816		—		—		816

	Carrying Value		Estimated Fair Value
	September 30, 2021		September 30, 2021		Fair Value Measurement Using
(in thousands)					Level 1		Level 2		Level 3
Financial assets:
2.89% promissory note receivable due April 2024	$	1,181	$	1,181	$	—	$	—	$	1,181
Investments in unconsolidated affiliates	37,724		48,954		41,638		—		7,316
Financial liabilities:
2024 Convertible Notes	$	123,543	$	153,281	$	—	$	153,281	$	—
2025 Convertible Notes	140,643		155,250		—		155,250		—