Note 11 - Senior Notes (Tables)

6 Months Ended

Jun. 30, 2018

Senior Notes [Abstract]

Schedule of Senior Notes [Table Text Block]

The carrying value of our senior notes at June 30, 2018 and December 31, 2017 was as follows:

(In thousands)		June 30, 2018		December 31, 2017
5.500%	Senior Notes due 2019	$	157,975	$	157,636
5.250%	Senior Notes due 2020	232,275		231,834
7.000%	Senior Notes due 2021	195,500		195,146
4.500%	Senior Notes due 2024	442,937		442,458
	Total Senior Notes	$	1,028,687	$	1,027,074