Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2018

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	December 31, 2018			December 31, 2017			September 30, 2018
		(in thousands)
2019 Convertible Notes Hedges — Level 2	Prepaid expenses and other current assets	$	21		$	—		$	2,552
2019 Convertible Notes Hedges — Level 2	Other assets	—			12,863			—
2019 Convertible Notes Embedded Derivative — Level 2	Current maturities of long-term-debt, net	(21		)	—			(2,552		)
2019 Convertible Notes Embedded Derivative — Level 2	Long-term debt, net	—			(12,863		)	—

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
	December 31, 2018		December 31, 2018		Fair Value Measurement Using
					Level 1		Level 2		Level 3
	(in thousands)
Financial assets:
Notes receivable, net	$	31,310	$	33,710	$	—	$	—	$	33,710
Investment in unconsolidated affiliate	35,511		35,511		35,511		—		—
Financial liabilities:
2019 Convertible Notes	$	190,076	$	190,613	$	—	$	190,613	$	—
2024 Convertible Notes	107,182		145,202		—		145,202		—
2025 Convertible Notes	121,316		134,447		—		134,447		—
8.5% unsecured notes due 2024	1,237		1,237		—		—		1,237
CASHMAX secured borrowing facility	334		1,160		—		—		1,160

	Carrying Value		Estimated Fair Value
	December 31, 2017		December 31, 2017		Fair Value Measurement Using
					Level 1		Level 2		Level 3
	(in thousands)
Financial assets:
Notes receivable, net	$	60,025	$	68,720	$	—	$	—	$	68,720
Investment in unconsolidated affiliate	45,605		42,777		42,777		—		—
Financial liabilities:
2019 Convertible Notes	$	179,835	$	201,084	$	—	$	201,084	$	—
2024 Convertible Notes	102,063		201,250		—		201,250		—

	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, net	$	37,425	$	41,153	$	—	$	—	$	41,153
Investment in unconsolidated affiliate	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