Other Income (Expense) (Tables)

3 Months Ended

Mar. 31, 2016

Other Income and Expenses [Abstract]

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

Items included in other income (expense) in the Condensed Consolidated Statements of Operations are as follows:

	Three months ended March 31,
(dollars in thousands)	2016			2015
Gain (loss) on currency transactions	$	(730	)	$	1,115
Hedge ineffectiveness	370			(399		)
Other non-operating income (expense)	345			111
Other income (expense)	$	(15	)	$	827