Note 15 - Senior Notes (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Debt [Table Text Block]

	March 31,		December 31,
	2019		2018
	(Dollars in thousands)
5⅝% Senior Notes due February 2020, net	$	249,109	$	248,850
5½% Senior Notes due January 2024, net		248,841		248,789
6% Senior Notes due January 2043, net		490,372		490,328
Total	$	988,322	$	987,967