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Accumulated other comprehensive income (Tables)
 3 Months Ended
Mar. 31, 2015
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)

 

Foreign Currency

Translation Adjustments

 

 

Change

in

Fair Value

 

 

Accumulated Other

Comprehensive Loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at December 31, 2014

 

$

(482

)

 

$

100

 

 

$

(382

)

Unrealized gain on cross-currency swap and warrants,

   net of tax of $435

 

 

—

 

 

 

665

 

 

 

665

 

Foreign currency translation adjustment (1)

 

 

(4,860

)

 

 

—

 

 

 

(4,860

)

Balance at March 31, 2015

 

$

(5,342

)

 

$

765

 

 

$

(4,577

)

 

(1)

As the 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.