Derivative Contracts (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amount of Foreign Exchange Contracts

The following table summarizes the notional amount of our open foreign exchange contracts:

	March 31, 2018				December 31, 2017
	U.S. $ Equivalent		U.S. $ Equivalent Fair Value		U.S. $ Equivalent		U.S. $ Equivalent Fair Value
Commitments to buy or sell currencies	$	14,550	$	15,200	$	17,491	$	16,838

Fair Value and Presentation in Consolidated Balance Sheets for Derivatives none of which are Designated as Accounting Hedges

The following table summarizes the fair value and presentation in the Condensed Consolidated Balance Sheets for derivatives, none of which are designated as accounting hedges: 

	Asset Derivatives
	March 31, 2018			December 31, 2017
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Foreign exchange contracts	Other current assets	$	636	Other current assets	$	20
Interest rate swap agreement	Other assets, net	$	1,526	Other assets, net	$	515

	Liability Derivatives
	March 31, 2018			December 31, 2017
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Foreign exchange contracts	Accrued liabilities	$	10	Accrued liabilities	$	627
Interest rate swap agreement	Accrued liabilities	$	—	Accrued liabilities	$	246

Effect of Derivative Instruments on Consolidated Statements of Operations for Derivatives not Designated as Hedging Instruments

The following table summarizes the effect of derivative instruments on the Condensed Consolidated Statements of Income for derivatives not designated as hedging instruments:

		Three Months Ended March 31,
		2018		2017
	Location of Gain Recognized in Income on Derivatives	Amount of Gain  Recognized in Income on Derivatives
Foreign exchange contracts	Cost of Revenues	$	1,232	$	1,555
Interest rate swap agreement	Interest Income	$	1,162	$	—