DEBT (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of debt

	December 31,
(In thousands)	2017			2016
Senior secured term loans	$	243,750		$	—
Convertible subordinated notes due 2023		240,984			240,984
Convertible senior notes due 2025		192,500			—
Non-recourse notes due 2029		—			487,189
Total debt		677,234			728,173
Unamortized debt discount and issuance costs		(77,872	)		(12,080	)
Current portion of senior secured term loan		(25,000	)		—
Current portion of non-recourse notes due 2029		—			(7,752	)
Net long-term debt	$	574,362		$	708,341

Aggregate scheduled maturities of long-term debt

(In thousands)	December 31, 2017
Years ending December 31:
2018	$	25,000
2019		25,000
2020		25,000
2021		25,000
2022		143,750
Thereafter		433,484
Total	$	677,234

2025 Notes

Summary of liability and equity components of convertible notes

(In thousands)	December 31, 2017
Liability component
Principal	$	192,500
Debt discount and issuance costs, net		(68,342	)
Net carrying amount	$	124,158
Equity component, net	$	65,361

Schedule of components of interest expense

(In thousands)	December 31, 2017
Contractual interest expense	$	1,925
Amortization of debt issuance costs		189
Amortization of debt discount		2,268
Total interest and amortization expense	$	4,382