Debt (Tables)

6 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Schedule of long term debt instruments

The following tables present our debt instruments outstanding, contractual maturities and interest expense:

	March 31, 2020								March 31, 2019							September 30, 2019
	Gross Amount		Debt Discount and Issuance Costs			Carrying Amount			Gross Amount		Debt Discount and Issuance Costs			Carrying Amount		Gross Amount		Debt Discount and Issuance Costs			Carrying Amount
	(in thousands)
2019 Convertible Notes	$	—	$	—		$	—		$	195,000	$	(2,312	)	$	192,688	$	—	$	—		$	—
2024 Convertible Notes	143,750		(29,554		)	114,196			143,750		(35,217		)	108,533		143,750		(32,439		)	111,311
2025 Convertible Notes	172,500		(42,876		)	129,624			172,500		(49,582		)	122,918		172,500		(46,290		)	126,210
8.5% unsecured debt due 2024*	983		—			983			1,191		—			1,191		1,092		—			1,092
CASHMAX secured borrowing facility*	281		(529		)	(248		)	1,105		(801		)	304		634		(653		)	(19		)
Total	$	317,514	$	(72,959	)	$	244,555		$	513,546	$	(87,912	)	$	425,634	$	317,976	$	(79,382	)	$	238,594
Less current portion	267		—			267			195,213		(2,312		)	192,901		214		—			214
Total long-term debt	$	317,247	$	(72,959	)	$	244,288		$	318,333	$	(85,600	)	$	232,733	$	317,762	$	(79,382	)	$	238,380

* Amount translated from Guatemalan quetzals and Canadian dollars as of applicable period end. Certain disclosures omitted due to materiality considerations.

	Schedule of Contractual Maturities
	Total		Less Than 1 Year		1 - 3 Years		3 - 5 Years		More Than 5 Years
	(in thousands)
2024 Convertible Notes*	$	143,750	$	—	$	—	$	143,750	$	—
2025 Convertible Notes*	172,500		—		—		172,500		—
8.5% unsecured debt due 2024	983		214		428		341		—
CASHMAX secured borrowing facility	281		—		281		—		—
	$	317,514	$	214	$	709	$	316,591	$	—

* Excludes the potential impact of embedded derivatives.

	Three Months Ended March 31,				Six Months Ended March 31,
	2020		2019		2020		2019
	(in thousands)
2019 Convertible Notes:
Contractual interest expense	$	—	$	1,069	$	—	$	2,138
Amortization of debt discount and deferred financing costs	—		2,610		—		5,253
Total interest expense	$	—	$	3,679	$	—	$	7,391
2024 Convertible Notes:
Contractual interest expense	$	1,033	$	1,033	$	2,066	$	2,066
Amortization of debt discount and deferred financing costs	1,457		1,350		2,886		2,675
Total interest expense	$	2,490	$	2,383	$	4,952	$	4,741
2025 Convertible Notes:
Contractual interest expense	$	1,024	$	1,024	$	2,048	$	2,048
Amortization of debt discount and deferred financing costs	1,722		1,602		3,413		3,176
Total interest expense	$	2,746	$	2,626	$	5,461	$	5,224