Note 5 - Investment in an Unconsolidated Company (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Equity Method Investments [Table Text Block]

	December 31,
	2018		2017
	(Dollars in thousands)
Sarulla	$	71,983	$	34,084

Other Comprehensive Income (Loss) from Equity Method Investments[Table Text Block]

	Year Ended December 3 1 ,
	2018		2017
	(Dollars in thousands)
Change, net of deferred tax, in unrealized gains (losses) in respect of the Company’s share in derivative instruments of unconsolidated investment	$	2,235	$	804