NOTE 10 – Senior Notes

The following table summarizes our senior notes as of June 30, 2017 and December 31, 2016 (in thousands):

	June 30, 2017			December 31, 2016
4.250% senior notes, due 2024 ⁽¹⁾	$	500,000		$	500,000
3.50% senior notes, due 2020 ⁽²⁾		300,000			300,000
		800,000			800,000
Debt issuance costs, net		(3,704	)		(4,109	)
	$	796,296		$	795,891

In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.250% senior notes due July 2024. Interest on these senior notes is payable semi-annually in arrears. We may redeem the notes in whole or in part, at our option, at a redemption price equal to 100% of their principal amount, plus a “make-whole” premium and accrued and unpaid interest, if any, to the date of redemption. In July 2016, we issued an additional $200.0 million in aggregate principal amount of 4.25% senior notes due 2024.

In December 2015, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 3.50% senior notes due December 2020. Interest on these senior notes is payable semi-annually in arrears. We may redeem the notes in whole or in part, at our option, at a redemption price equal to 100% of their principal amount, plus a “make-whole” premium and accrued and unpaid interest, if any, to the date of redemption.

Our senior notes mature as follows, based upon contractual terms (in thousands):

2017	$	—
2018		—
2019		—
2020		300,000
2021		—
Thereafter		500,000
	$	800,000