Debt (Tables)

12 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Long-term debt instruments

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

	September 30, 2020						September 30, 2019
	Gross Amount		Debt Discount and Issuance Costs		Carrying Amount		Gross Amount		Debt Discount and Issuance Costs		Carrying Amount
	(in thousands)
2024 Convertible Notes	$	143,750	$	(26,557)	$	117,193	$	143,750	$	(32,439)	$	111,311
2025 Convertible Notes	172,500		(39,336)		133,164		172,500		(46,290)		126,210
8.5% unsecured debt due 2024*	872		—		872		1,092		—		1,092
CASHMAX*	—		—		—		634		(653)		(19)
Total	$	317,122	$	(65,893)	$	251,229	$	317,976	$	(79,382)	$	238,594
Less current portion	213		—		213		214		—		214
Total long-term debt	$	316,909	$	(65,893)	$	251,016	$	317,762	$	(79,382)	$	238,380

*    Amounts translated from Guatemalan quetzals and Canadian dollars as of the applicable period end.

Schedule of maturities of debt

	Schedule of Contractual Maturities
	Total		Less Than 1 Year		1 - 3 Years		3 - 5 Years
	(in thousands)
2024 Convertible Notes*	$	143,750	$	—	$	—	$	143,750
2025 Convertible Notes*	172,500		—		—		172,500
8.5% unsecured debt due 2024	872		213		427		232
Total	$	317,122	$	213	$	427	$	316,482

*    Excludes the potential impact of embedded derivatives.

Schedule of Interest Expense

	Fiscal Year Ended September 30,
	2020		2019		2018
	(in thousands)
2019 Convertible Notes:
Contractual interest expense	$	—	$	3,074	$	4,144
Amortization of debt discount and deferred financing costs	—		7,556		9,952
Total interest expense	$	—	$	10,630	$	14,096
2024 Convertible Notes:
Contractual interest expense	$	4,133	$	4,133	$	4,133
Amortization of debt discount and deferred financing costs	5,883		5,452		5,057
Total interest expense	$	10,016	$	9,585	$	9,190
2025 Convertible Notes:
Contractual interest expense	$	4,097	$	4,097	$	1,559
Amortization of debt discount and deferred financing costs	6,954		6,468		2,383
Total interest expense	$	11,051	$	10,565	$	3,942