INDEBTEDNESS (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Convertible Debt

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

(in thousands)	June 30, 2018			December 31, 2017
Principal amount	$	143,750		$	143,750
Unamortized debt discount		(10,427	)		(13,924	)
Deferred financing costs		(1,196	)		(1,618	)
Net carrying value	$	132,127		$	128,208

Schedule of Long-term Debt Instruments

The carrying value of the current and long-term components of the Term Loan as of June 30, 2018 and December 31, 2017 are:

	Current
(in thousands)	June 30, 2018			December 31, 2017
Current borrowing on secured term loan	$	5,625		$	3,750
Unamortized deferred financing costs		(408	)		(397	)
Current component of long-term borrowing, net of unamortized deferred financing costs	$	5,217		$	3,353

	Long-Term
(in thousands)	June 30,  2018			December 31, 2017
Long-term borrowing on secured term loan	$	68,438		$	71,250
Unamortized deferred financing costs		(1,176	)		(1,304	)
Long-term borrowing, net of unamortized deferred financing costs and current borrowing component	$	67,262		$	69,946

Interest Income and Interest Expense Disclosure

The following table sets forth the components of total interest expense related to the Notes and Term Loan recognized in the accompanying unaudited interim condensed consolidated statements of operations for the three and six months ended June 30, 2018 and 2017:

	Three Months Ended						Six Months Ended
(in thousands)	June 30, 2018			June 30, 2017			June 30, 2018			June 30, 2017
Contractual coupon	$	1,752		$	1,078		$	3,476		$	2,156
Amortization of debt discount		1,760			1,668			3,497			3,315
Amortization of finance fees		371			211			741			422
Capitalized interest		(105	)		(134	)		(297	)		(224	)
	$	3,778		$	2,823		$	7,417		$	5,669