Debt (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Debt Instrument Redemption

The Company had the following senior notes outstanding as of March 31, 2016 and December 31, 2015:

Issue Date	March 31, 2016			December 31, 2015			Interest Rate		Maturity Date	Issue Price
May 2014	$	250,000		$	250,000		4.40	%	June 2024	99.883	%
June 2013	250,000			250,000			4.25	%	June 2023	99.026	%
	500,000			500,000
Unamortized discount	(1,984		)	(2,053		)
Unamortized debt issuance cost	(4,281		)	(4,421		)
	$	493,735		$	493,526

Schedule of Line of Credit Facilities

A summary of the significant terms are as follows:

	Maturity Date	Current Interest Rate
$400,000 Revolving Credit Facility(1)	August 2019	LIBOR + 1.00%
$250,000 Term Loan(2)(4)	August 2020	LIBOR + 1.10%
$255,000 Term Loan(3)(4)	January 2021	LIBOR + 1.10%

(1) Maturity date can be extended to August 2020 at the Company's option. The interest rate ranges from LIBOR plus 0.85% to 1.55%. At March 31, 2016, the revolving credit facility had $147,000 outstanding and availability of $253,000, subject to covenant compliance.

(2) The interest rate ranges from LIBOR plus 0.90% to 1.75%. The Company previously entered into aggregate interest-rate swap agreements to fix the LIBOR component at a weighted-average rate of 1.09% through February 2018 on the $250,000 of outstanding LIBOR-based borrowings.

(3) The interest rate ranges from LIBOR plus 0.90% to 1.75%. The Company previously entered into aggregate interest-rate swap agreements to fix the LIBOR component at a weighted-average rate of 1.42% through January 2019 on the $255,000 of outstanding LIBOR-based borrowings.

(4) The aggregate unamortized debt issuance costs for the term loans were $4,670 and $4,924 as of March 31, 2016 and December 31, 2015, respectively.

Schedule of Long-term Debt Instruments

Below is a summary of additional disclosures related to the 6.00% Convertible Guaranteed Notes due 2030.

	6.00% Convertible Guaranteed Notes due 2030
Balance Sheets:	March 31, 2016			December 31, 2015
Principal amount of debt component	$	12,400		$	12,400
Unamortized discount	(167		)	(220		)
Unamortized debt issuance costs	(41		)	(54		)
Carrying amount of debt component	$	12,192		$	12,126
Carrying amount of equity component	$	(34,784	)	$	(34,784	)
Effective interest rate	8.1		%	7.8		%
Period through which discount is being amortized, put date	01/2017			01/2017
Aggregate if-converted value in excess of aggregate principal amount	$	4,295		$	2,863

	Three months ended March 31,
Statements of Operations:	2016		2015
6.00% Convertible Guaranteed Notes
Coupon interest	$	186	$	236
Discount amortization	53		67
	$	239	$	303

The Company had the following mortgages and notes payable outstanding as of March 31, 2016 and December 31, 2015:

	March 31, 2016			December 31, 2015
Mortgages and notes payable	$	933,430		$	882,952
Unamortized debt issuance costs	(11,110		)	(10,309		)
	$	922,320		$	872,643