Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Interest Expense

Interest Expense

The following table summarizes the components of interest expense for the periods presented:

	Year Ended December 31,
	2015			2014			2013
Interest on borrowings and related fees	$	92,490		$	91,866		$	80,263
Accretion of original issue discount 1	—			—			431
Amortization of debt issuance costs	4,749			4,197			3,413
Capitalized interest	(6,288		)	(7,232		)	(5,266		)
	$	90,951		$	88,831		$	78,841

______________________

¹ Includes accretion of original issue discount attributable to the 2016 Senior Notes that were retired in 2013.

Carrying Amount of Components of Long-term Debt

The following table summarizes our long-term debt as of the dates presented:

	As of December 31,
	2015					2014
	Principal			Unamortized Issuance Costs		Principal			Unamortized Issuance Costs
Revolving credit facility 1	$	170,000				$	35,000
Senior notes due 2019	300,000			3,295		300,000			4,131
Senior notes due 2020	775,000			17,322		775,000			20,440
Totals	$	1,245,000		$	20,617	$	1,110,000		$	24,571
Less: Unamortized issuance costs	(20,617		)			(24,571		)
Less: Current portion	(1,224,383		)			—
Long-term debt, net of unamortized issuance costs	$	—				$	1,085,429

Components of Interest Expense

The following table summarizes the components of interest expense for the periods presented:

	Year Ended December 31,
	2015			2014			2013
Interest on borrowings and related fees	$	92,490		$	91,866		$	80,263
Accretion of original issue discount 1	—			—			431
Amortization of debt issuance costs	4,749			4,197			3,413
Capitalized interest	(6,288		)	(7,232		)	(5,266		)
	$	90,951		$	88,831		$	78,841

______________________

¹ Includes accretion of original issue discount attributable to the 2016 Senior Notes that were retired in 2013.