Annual report pursuant to Section 13 and 15(d)

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Instruments (Details)

v3.8.0.1
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Instruments (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
derivative_instrument
Dec. 31, 2016
USD ($)
Other Assets    
Derivative [Line Items]    
Derivative Asset $ 0 $ 0
Other Current Liabilities    
Derivative [Line Items]    
Derivative Liabilities 0 0
Not designated in hedging relationships | Other Inc/(Exp)    
Derivative [Line Items]    
Amount of Gain or (Loss) Recognized in Income $ (333) (430)
Not designated in hedging relationships | Sell AUD/Buy USD Fwd Contract    
Derivative [Line Items]    
Number of Instruments | derivative_instrument 9  
Not designated in hedging relationships | Sell AUD/Buy USD Fwd Contract | Other Inc/(Exp)    
Derivative [Line Items]    
Amount of Gain or (Loss) Recognized in Income $ (29) (24)
Not designated in hedging relationships | Sell AUD/Buy USD Fwd Contract | Other Assets    
Derivative [Line Items]    
Derivative Asset 0 0
Not designated in hedging relationships | Sell AUD/Buy USD Fwd Contract | Other Current Liabilities    
Derivative [Line Items]    
Derivative Liabilities $ 0 0
Not designated in hedging relationships | Sell CAD/Buy USD Fwd Contract    
Derivative [Line Items]    
Number of Instruments | derivative_instrument 14  
Not designated in hedging relationships | Sell CAD/Buy USD Fwd Contract | Other Inc/(Exp)    
Derivative [Line Items]    
Amount of Gain or (Loss) Recognized in Income $ (304) (406)
Not designated in hedging relationships | Sell CAD/Buy USD Fwd Contract | Other Assets    
Derivative [Line Items]    
Derivative Asset 0 0
Not designated in hedging relationships | Sell CAD/Buy USD Fwd Contract | Other Current Liabilities    
Derivative [Line Items]    
Derivative Liabilities $ 0 $ 0
Not designated in hedging relationships | FX Forward Contracts    
Derivative [Line Items]    
Number of Instruments | derivative_instrument 23  
Sell Notional | Not designated in hedging relationships | Sell AUD/Buy USD Fwd Contract    
Derivative [Line Items]    
Sell Notional $ 1,250  
Sell Notional | Not designated in hedging relationships | Sell CAD/Buy USD Fwd Contract    
Derivative [Line Items]    
Sell Notional 8,750  
Buy Notional | Not designated in hedging relationships | Sell AUD/Buy USD Fwd Contract    
Derivative [Line Items]    
Sell Notional 960  
Buy Notional | Not designated in hedging relationships | Sell CAD/Buy USD Fwd Contract    
Derivative [Line Items]    
Sell Notional 6,864  
Buy Notional | Not designated in hedging relationships | FX Forward Contracts    
Derivative [Line Items]    
Sell Notional $ 7,824