INDEBTEDNESS (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Convertible Debt

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

(in thousands)	2015
Principal amount	$	143,750
Unamortized debt discount		(31,578)
Net carrying value	$	112,172

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 three months ended March 31:

(in thousands)	2015
Contractual coupon	$	1,078
Amortization of debt discount		1,481
Amortization of finance fees		211
Capitalized interest		(9)
	$	2,761