Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies

Schedule of fair value of debt instruments

	December 31, 2017				December 31, 2016
	Carrying		Fair		Carrying		Fair
(in thousands)	Value		Value		Value		Value
Original notes - 7.625% (1)	$	421,772	$	426,063	$	420,523	$	420,750
Add-on notes - 7.625% (2)		224,338		220,550		225,743		217,800

(1) The carrying value of the Original notes - 7.625% is net of unamortized deferred financing costs of $3.2 and $4.5 million as of December 31, 2017 and 2016, respectively.

(2) The carrying value of the Add-on notes - 7.625% is net of unamortized deferred financing costs of $1.3 and $1.9 million as of December 31, 2017 and 2016, respectively, and includes unamortized bond premium of $5.7 and $7.6 million as of December 31, 2017 and 2016, respectively.