Note 14 - Senior Notes (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Debt [Table Text Block]

	March 31,		December 31,
	2018		2017
	(Dollars in thousands)
5⅝% Senior Notes due February 2020, net	$	248,097	$	247,853
5½% Senior Notes due January 2024, net		248,634		248,585
6% Senior Notes due January 2043, net		490,201		490,159
Total	$	986,932	$	986,597