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Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Dec. 31, 2019
Text Block [Abstract]  
Summary of accumulated other comprehensive income (loss)
The changes in accumulated other comprehensive income (loss) for the years ended December 31, 2019, 2018 and 2017 were as follows:
 
   
Foreign
Currency
Translation
Adjustments
   
Derivative

Financial
Instruments
Designated as

Cash Flow Hedges
   
      Total      
 
(in thousands)
            
Balance at December 31, 2016
  
$
—
   
$
(7
) 
  
$
(7
) 
Gain arising during the period
   10    77    87 
Reclassification to earnings for (loss) realized
   —    (56)    (56) 
Income tax (expense)
   —    (7)    (7) 
  
 
 
   
 
 
   
 
 
 
Net other comprehensive income – Year 2017
   10    14    24 
  
 
 
   
 
 
   
 
 
 
Balance at December 31, 2017
  
$
10
 
  
$
7
 
  
$
17
 
Gain (loss) arising during the period
   (207)    98    (109) 
Reclassification to earnings for (loss) realized
   —    (2)    (2) 
Income tax (expense)
   —    (25)    (25) 
  
 
 
   
 
 
   
 
 
 
Net other comprehensive income (loss) – Year 2018
   (207)    71    (136) 
  
 
 
   
 
 
   
 
 
 
Balance at December 31, 2018
  
$
(197
) 
  
$
78
 
  
$
(119
) 
(Loss) arising during the period
   (129)    (181)    (310) 
Reclassification to earnings for gains realized
   —    32    32 
Income tax benefit
   —    39    39 
  
 
 
   
 
 
   
 
 
 
Net other comprehensive (loss) – Year 2019
   (129)    (110)    (239) 
  
 
 
   
 
 
   
 
 
 
Balance at December 31, 2019
  
$
(326
) 
  
$
(32
) 
  
$
(358
)