Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Values of our Derivative Assets and Liabilities

The fair values of our derivative assets and liabilities measured on a recurring basis as of December 31 are categorized as follows:

		2017								2016
		Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Derivative assets	Foreign exchange contract 1	$	20	$	—	$	20	$	—	$	142	$	—	$	142	$	—
	Interest rate swap agreement 2	$	515	$	—	$	515	$	—	$	—	$	—	$	—	$	—
Derivative liabilities	Foreign exchange contract 3	$	627	$	—	$	627	$	—	$	1,234	$	—	$	1,234	$	—
	Interest rate swap agreement 4	$	246	$	—	$	246	$	—	$	—	$	—	$	—	$	—

¹  Presented in the Consolidated Balance Sheets in other current assets and based on observable market transactions of spot and forward rates.

²  Presented in Consolidated Balance Sheets in other assets and based on observable market transactions of forward rates.

³  Presented in the Consolidated Balance Sheets in accrued liabilities and other and based on observable market transactions of spot and forward rates.

⁴  Presented in Consolidated Balance Sheets in accrued liabilities and other, and based on observable market transactions of forward rates.

Notional Amount of Foreign Exchange Contracts

The following table summarizes the notional amount of our open foreign exchange contracts at December 31:

	2017				2016
	U.S. $ Equivalent		U.S. Equivalent Fair Value		U.S. $ Equivalent		U.S. Equivalent Fair Value
Commitments to buy or sell currencies	$	17,491	$	16,838	$	18,593	$	17,213

Effect of Derivative Instruments on Consolidated Statements of Income for Derivatives not Designated as Accounting Hedges

The following table summarizes the effect of derivative instruments on the Consolidated Statements of Operations for derivatives not designated as hedging instruments at December 31:

		2017		2016
	Location of Gain (Loss) Recognized in Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives
Foreign exchange contracts	Cost of Revenues	$	457	$	(603	)
Interest rate swap agreement	Interest Income	$	269	$	—

Carrying Amounts and Fair Values of Our Long-Term Debt Obligations

The carrying amounts and fair values of our long-term debt at December 31 are as follows:

	2017				2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
7.875% senior secured notes due April 15, 2019	$	—	$	—	$	233,154	$	231,391
Term loan and security agreement 1	$	166,949	$	169,972	$	—	$	—

¹  Presented in the Consolidated Balance Sheets as the current portion of long-term debt (net of current prepaid debt financing costs and current original issue discount) of $3.2 million and long-term debt (net of long-term prepaid debt financing costs and long-term original issue discount) of $163.8 million.