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Accumulated other comprehensive loss (Tables)
 9 Months Ended
Sep. 30, 2016
Equity [Abstract]  
Components of Changes in Accumulated Other Comprehensive Loss

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

(U.S. Dollars, in thousands)

 

Currency

Translation Adjustments

 

 

Derivatives

 

 

Debt

Securities

 

 

Accumulated Other

Comprehensive Loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at December 31, 2015

 

$

(4,389

)

 

$

228

 

 

$

(2,071

)

 

$

(6,232

)

Unrealized gain on derivative instruments,

   net of tax of $50

 

 

—

 

 

 

74

 

 

 

—

 

 

 

74

 

Unrealized gain on debt securities, net of tax benefit of $304

 

 

—

 

 

 

—

 

 

 

539

 

 

 

539

 

Foreign currency translation adjustment (1)

 

 

1,471

 

 

 

—

 

 

 

—

 

 

 

1,471

 

Balance at September 30, 2016

 

$

(2,918

)

 

$

302

 

 

$

(1,532

)

 

$

(4,148

)

 ___________________________________________

(1)

As unremitted earnings generally remain indefinitely reinvested in the non U.S. dollar denominated foreign subsidiaries, no deferred taxes are recognized on the related foreign currency translation adjustment.