Note 20 - Supplemental Disclosures to Condensed Consolidated Statements of Cash Flows (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

	Nine Months Ended September 30,
	2017		2016
	(Dollars in thousands)
Supplemental Disclosures of Cash Flow Information:
Cash paid during the period for:
Income taxes	$	177,332	$	150,822
Supplemental Disclosures of Noncash Activities:
Increase in secured project debt for assets acquired	$	16,480	$	25,625