Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Financial assets (liabilities) that are measured at fair value on a recurring basis

The tables below present our financial assets (liabilities) that were carried and measured at fair value on a recurring basis:

Financial Assets (Liabilities)	Balance Sheet Location	March 31, 2019		March 31, 2018			September 30, 2018
		(in thousands)
2019 Convertible Notes Hedges — Level 2	Prepaid expenses and other current assets	$	—	$	—		$	2,552
2019 Convertible Notes Hedges — Level 2	Other assets	—		16,042			—
2019 Convertible Notes Embedded Derivative — Level 2	Current maturities of long-term debt, net	—		—			(2,552		)
2019 Convertible Notes Embedded Derivative — Level 2	Long-term debt, net	—		(16,042		)	—

Financial assets, temporary equity, and liabilities not measured at fair value in the consolidated balance sheet

The tables below present our financial assets and liabilities that were not measured at fair value on a recurring basis:

	Carrying Value		Estimated Fair Value
	March 31, 2019		March 31, 2019		Fair Value Measurement Using
					Level 1		Level 2		Level 3
	(in thousands)
Financial assets:
Notes receivable from Grupo Finmart, net	$	25,166	$	26,601	$	—	$	—	$	26,601
Zero-coupon convertible promissory note due January 2021	6,793		6,793		—		—		6,793
Investment in unconsolidated affiliates	29,387		29,387		26,611		—		2,776
Financial liabilities:
2019 Convertible Notes	$	192,688	$	193,440	$	—	$	193,440	$	—
2024 Convertible Notes	108,533		159,994		—		159,994		—
2025 Convertible Notes	122,918		151,179		—		151,179		—
8.5% unsecured notes due 2024	1,191		1,191		—		—		1,191
CASHMAX secured borrowing facility	304		1,105		—		—		1,105

	Carrying Value		Estimated Fair Value
	March 31, 2018		March 31, 2018		Fair Value Measurement Using
					Level 1		Level 2		Level 3
	(in thousands)
Financial assets:
Notes receivable from Grupo Finmart, net	$	56,751	$	65,091	$	—	$	—	$	65,091
Investment in unconsolidated affiliates	46,509		46,926		46,926		—		—
Financial liabilities:
2019 Convertible Notes	$	182,296	$	206,856	$	—	$	206,856	$	—
2024 Convertible Notes	103,287		212,060		—		212,060

	Carrying Value		Estimated Fair Value
	September 30, 2018		September 30, 2018		Fair Value Measurement Using
					Level 1		Level 2		Level 3
	(in thousands)
Financial assets:
Notes receivable from Grupo Finmart, net	$	37,425	$	41,153	$	—	$	—	$	41,153
Investment in unconsolidated affiliates	49,500		49,500		49,500		—		—
Financial liabilities:
2019 Convertible Notes	$	187,433	$	189,150	$	—	$	189,150	$	—
2024 Convertible Notes	105,858		180,399		—		180,399		—
2025 Convertible Notes	119,736		161,253		—		161,253		—
8.5% unsecured notes due 2024	1,304		1,304		—		—		1,304