INDEBTEDNESS (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Convertible Debt

The carrying value of the Notes is as follows as of December 31:

(in thousands)	2017		2016
Principal amount	$	143,750	$	143,750
Unamortized debt discount		(13,924)		(20,644)
Deferred financing costs		(1,618)		(2,463)
Net Carrying value	$	128,208	$	120,643

Interest Income and Interest Expense Disclosure

The following table sets forth the components of total interest expense related to the Notes recognized in the accompanying consolidated statements of operations for the year ended December 31:

(in thousands)	2017		2016		2015
Contractual coupon	$	4,313	$	4,312	$	4,312
Amortization of debt discount		6,720		6,372		6,043
Amortization of finance fees		845		844		844
Capitalized interest		(554)		(234)		(56)
	$	11,324	$	11,294	$	11,143

Schedule of Long-term Debt Instruments

The carrying value of the current and long-term components of the Term Loan as of December 31, 2017 are:

(in thousands)	Current
Current borrowing on secured term loan	$	3,750
Deferred financing costs		(397)
Current component of long-term borrowing, net of deferred financing costs	$	3,353
(in thousands)		Long-Term
Long-term borrowing on secured term loan	$	71,250
Deferred financing costs		(1,304)
Long-term borrowing, net of deferred financing costs and current borrowing component	$	69,946