Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Summary of Debt

The following is a summary of our debt (dollar amounts in thousands):

	As of June 30, 2016						As of December 31, 2015
	Balance			Interest Rate			Balance			Interest Rate
Revolving credit facility	$	25,000			Variable		$	1,100,000			Variable
2006 Senior Unsecured Notes		125,000			Various			125,000			Various
2011 Senior Unsecured Notes		450,000			6.875	%		450,000			6.875	%
2012 Senior Unsecured Notes:
Principal amount		350,000			6.375	%		350,000			6.375	%
Unamortized premium		1,991						2,168
		351,991						352,168
2013 Senior Unsecured Notes (A)		222,120			5.750	%		217,240			5.750	%
2014 Senior Unsecured Notes		300,000			5.500	%		300,000			5.500	%
2015 Senior Unsecured Notes (A)		555,300			4.000	%		543,100			4.000	%
2016 Senior Unsecured Notes		500,000			6.375	%		—			—
Term loans		263,253			Various			263,400			Various
	$	2,792,664					$	3,350,908
Debt issue costs, net		(34,029	)					(28,367	)
	$	2,758,635					$	3,322,541

(A) These notes are Euro-denominated and reflect the exchange rate at June 30, 2016 and December 31, 2015, respectively.

Principal Payments Due on Debt

As of June 30, 2016, principal payments due on our debt (which exclude the effects of any discounts, premiums, or debt issue costs recorded) are as follows (in thousands):

2016	$	125,152	(A)
2017		320
2018		37,781
2019		250,000
2020		222,120
Thereafter		2,155,300
Total	$	2,790,673

(A) $65 million of our 2006 Senior Unsecured Notes were paid in full on in July 2016, while the remaining $60 million will mature in and October 2016.