Fair Value of Financial Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Summary of Fair Value and Carrying Value of Long-Term Debt

The fair value and carrying value of long-term debt as of March 31, 2018 and December 31, 2017 were as follows (in thousands):

	March 31, 2018					December 31, 2017
	Fair Value (1)		Carrying Value			Fair Value (1)		Carrying Value
Senior Secured Notes	$	778,000	$	704,835	(2)	$	782,000	$	705,520	(2)
Convertible Notes		327,000		316,768	(3)		330,000		311,544	(3)

(1) Fair value amounts are rounded to the nearest million.

(2) Carrying value of the Senior Secured Notes includes unamortized debt premium and Consent Fees of $14.8 million and $15.5 million, respectively, as of March 31, 2018 and December 31, 2017. See Note 9, “Long-Term Debt and Other Liabilities,” for further information.

(3) Carrying value of the Convertible Notes excludes unamortized debt discount of $45.1 million and $50.4 million, respectively, as of March 31, 2018 and December 31, 2017. See Note 9, “Long-Term Debt and Other Liabilities,” for further information.