Senior Notes, Convertible Notes, Exchangeable Notes and Trust Preferred Securities (Tables)

12 Months Ended

Dec. 31, 2014

Debt Instrument [Line Items]

Debt Instrument Redemption

The Company had the following Senior Notes outstanding as of December 31, 2014:

Issue Date	Face Amount		Interest Rate		Maturity Date	Issue Price
May 2014	$	250,000	4.40	%	June 2024	99.883	%
June 2013	250,000		4.25	%	June 2023	99.026	%
	$	500,000

Schedule of Long-term Debt Instruments

Below is a summary of additional disclosures related to the 6.00% Convertible Guaranteed Notes and the 5.45% Exchangeable Guaranteed Notes.

	6.00% Convertible Guaranteed Notes
Balance Sheets:	December 31, 2014			December 31, 2013
Principal amount of debt component	$	16,228		$	28,991
Unamortized discount	(564		)	(1,500		)
Carrying amount of debt component	$	15,664		$	27,491
Carrying amount of equity component	$	(33,160	)	$	(26,032	)
Effective interest rate	8.1		%	8.1		%
Period through which discount is being amortized, put date	01/2017			01/2017
Aggregate if-converted value in excess of aggregate principal amount	$	10,432		$	14,296

Statements of Operations:	2014		2013		2012
6.00% Convertible Guaranteed Notes
Coupon interest	$	1,545	$	2,296	$	6,634
Discount amortization	438		658		1,868
	$	1,983	$	2,954	$	8,502
5.45% Exchangeable Guaranteed Notes
Coupon interest	$	—	$	—	$	188
Discount amortization	—		—		34
	$	—	$	—	$	222

Senior Notes, Convertible Notes, Exchangeable Notes, and Trust Preferred Securities [Member]

Debt Instrument [Line Items]

Schedule of Maturities of Long-term Debt

Scheduled principal payments for these debt instruments for the next five years and thereafter are as follows:

Year ending December 31,	Total
2015	$	—
2016	—
2017(1)	16,228
2018	—
2019	—
Thereafter	629,120
	645,348
Debt discounts	(2,889		)
	$	642,459

(1) Although the 6.00% Convertible Guaranteed Notes mature in 2030, the notes can be put to the Company in 2017.