Accumulated other comprehensive income (loss) (Tables)

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Components of Changes in Accumulated Other Comprehensive Income

The components of and changes in accumulated other comprehensive income were as follows:

(U.S. Dollars, in thousands)	Currency Translation Adjustments			Debt Security			Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2018	$	(2,386	)	$	5,682		$	3,296
Cumulative effect adjustment from adoption of ASU 2018-02		—			938			938
Other comprehensive loss		(2,195	)		(2,593	)		(4,788	)
Income taxes		—			641			641
Reclassification adjustment to:
Interest income (expense), net		—			(1,034	)		(1,034	)
Other expense, net		—			(5,193	)		(5,193	)
Income taxes		—			1,559			1,559
Balance at September 30, 2019	$	(4,581	)	$	—		$	(4,581	)