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Fair Value of Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2017
Fair Value of Financial Instruments [Abstract]  
Assets and Liabilities Measured at Fair Value
The following table presents assets and liabilities measured at fair value at December 31, 2017:

 
Quoted Prices
in Active Markets
for Identical Assets
 
Significant
Other Observable
Inputs
 
Significant
Unobservable
Inputs
  
(in thousands)
(Level 1)
 
(Level 2)
 
(Level 3)
 
Total
            
            
Money market funds
$
3,240
 
$
-
 
$
-
 
$
3,240
Foreign exchange contracts
 
-
  
201
  
-
  
201
            
Total assets
$
3,240
 
$
201
 
$
-
 
$
3,441
            
Contingent consideration liability
 
-
  
-
  
(1,701)
  
(1,701)
            
Total liabilities
$
-
 
$
-
 
$
(1,701)
 
$
(1,701)

The following table presents assets and liabilities measured at fair value at December 31, 2016:

 
Quoted Prices
in Active Markets
for Identical Assets
 
Significant
Other Observable
Inputs
 
Significant
Unobservable
Inputs
  
(in thousands)
(Level 1)
 
(Level 2)
 
(Level 3)
 
Total
            
            
Money market funds
$
16,435
 
$
-
 
$
-
 
$
16,435
Foreign exchange contracts
 
-
  
141
  
-
  
141
            
Total assets
$
16,435
 
$
141
 
$
-
 
$
16,576
            
Foreign exchange contracts
$
-
 
$
(20)
 
$
-
 
$
(20)
Contingent consideration liability
 
-
  
-
  
(2,105)
  
(2,105)
            
Total liabilities
$
-
 
$
(20)
 
$
(2,105)
 
$
(2,125)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
For the years ended December 31, 2017 and 2016, the Company did not have any transfers between fair value Level 1 and Level 2. The Company did not hold any non-financial assets or non-financial liabilities subject to fair value measurements on a recurring basis at December 31, 2017 or 2016.

During the years ended December 31, 2017 and 2016, the Company did not have any transfers into or out of the Level 3 contingent consideration liability.
The following table provides a roll-forward of the fair value of the contingent consideration categorized as Level 3 for the year ended December 31, 2017:
(in thousands)
Balance, January 1, 2017
  $
2,105
Payments made on contingent liabilities
  
(850
Change in fair value
  
446
Balance, December 31, 2017
  $
1,701

The Company made the last payment of the contingent consideration in January 2018.