Fair Value Measurements and Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables show, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis at June 30, 2015 and December 31, 2014. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect its placement within the fair value hierarchy.

	June 30, 2015
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	135,822	$	228,787		$	—	$	364,609
Equity securities	—		25,434			—		25,434
Commingled fixed income securities	—		22,709			—		22,709
U.S. Government, federal agencies and municipalities	112,508		19,206			—		131,714
Corporate notes and bonds	—		65,840			—		65,840
Mortgage-backed / asset-backed securities	—		166,326			—		166,326
Derivatives
Foreign exchange contracts	—		838			—		838
Total assets	$	248,330	$	529,140		$	—	$	777,470
Liabilities:
Derivatives
Foreign exchange contracts	$	—	$	(4,530	)	$	—	$	(4,530	)
Total liabilities	$	—	$	(4,530	)	$	—	$	(4,530	)

	December 31, 2014
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	505,643	$	193,986		$	—	$	699,629
Equity securities	—		27,409			—		27,409
Commingled fixed income securities	—		24,077			—		24,077
U.S. Government, federal agencies and municipalities	113,974		24,006			—		137,980
Corporate notes and bonds	—		67,448			—		67,448
Mortgage-backed / asset-backed securities	—		156,614			—		156,614
Derivatives
Foreign exchange contracts	—		1,386			—		1,386
Total assets	$	619,617	$	494,926		$	—	$	1,114,543
Liabilities:
Derivatives
Foreign exchange contracts	$	—	$	(2,988	)	$	—	$	(2,988	)
Total liabilities	$	—	$	(2,988	)	$	—	$	(2,988	)

Schedule of Available-for-sale Securities Reconciliation

Available-for-sale securities at June 30, 2015 and December 31, 2014 consisted of the following:

	June 30, 2015
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
U.S. Government, federal agencies and municipalities	$	131,031	$	1,927	$	(1,244	)	$	131,714
Corporate notes and bonds	65,396		1,112		(668		)	65,840
Mortgage-backed / asset-backed securities	165,095		2,360		(1,129		)	166,326
Total	$	361,522	$	5,399	$	(3,041	)	$	363,880

	December 31, 2014
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
U.S. Government, federal agencies and municipalities	$	135,839	$	2,905	$	(764	)	$	137,980
Corporate notes and bonds	66,170		1,569		(291		)	67,448
Mortgage-backed / asset-backed securities	155,330		2,362		(1,078		)	156,614
Total	$	357,339	$	6,836	$	(2,133	)	$	362,042

Available-for-sale Securities

Scheduled maturities of available-for-sale securities at June 30, 2015 were as follows:

	Amortized cost		Estimated fair value
Within 1 year	$	64,668	$	64,716
After 1 year through 5 years	63,180		64,229
After 5 years through 10 years	57,909		58,599
After 10 years	175,765		176,336
Total	$	361,522	$	363,880

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The fair value of derivative instruments at June 30, 2015 and December 31, 2014 was as follows:

Designation of Derivatives	Balance Sheet Location	June 30, 2015			December 31, 2014
Derivatives designated as hedging instruments
Foreign exchange contracts	Other current assets and prepayments	$	518		$	762
	Accounts payable and accrued liabilities:	(415		)	—
Derivatives not designated as hedging instruments
Foreign exchange contracts	Other current assets and prepayments	320			624
	Accounts payable and accrued liabilities:	(4,115		)	(2,988		)
	Total derivative assets	$	838		$	1,386
	Total derivative liabilities	(4,530		)	(2,988		)
	Total net derivative liabilities	$	(3,692	)	$	(1,602	)

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The following represents the results of cash flow hedging relationships for the three and six months ended June 30,2015 and 2014:

	Three Months Ended June 30,
	Derivative Gain (Loss) Recognized in AOCL (Effective Portion)						Location of Gain (Loss) (Effective Portion)	Gain (Loss) Reclassified from AOCL to Earnings (Effective Portion)
Derivative Instrument	2015			2014				2015		2014
Foreign exchange contracts	$	(418	)	$	17		Revenue	$	432	$	(346	)
							Cost of sales	190		153
								$	622	$	(193	)
	Six Months Ended June 30,
	Derivative Gain (Loss) Recognized in AOCL (Effective Portion)						Location of Gain (Loss) (Effective Portion)	Gain (Loss) Reclassified from AOCL to Earnings (Effective Portion)
Derivative Instrument	2015			2014				2015		2014
Foreign exchange contracts	$	755		$	(52	)	Revenue	$	828	$	(580	)
							Cost of sales	585		352
								$	1,413	$	(228	)

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The following represents the results of our non-designated derivative instruments for the three and six months ended June 30,2015 and 2014:

		Three Months Ended June 30,
		Derivative Gain (Loss) Recognized in Earnings
Derivatives Instrument	Location of Derivative Gain (Loss)	2015			2014
Foreign exchange contracts	Selling, general and administrative expense	$	(4,131	)	$	(2,622	)
		Six Months Ended June 30,
		Derivative Gain (Loss) Recognized in Earnings
Derivatives Instrument	Location of Derivative Gain (Loss)	2015			2014
Foreign exchange contracts	Selling, general and administrative expense	$	(3,577	)	$	(3,304	)

Fair Value, by Balance Sheet Grouping

The carrying value and estimated fair value of our debt at June 30, 2015 and December 31, 2014 were as follows:

	June 30, 2015		December 31, 2014
Carrying value	$	2,994,190	$	3,252,006
Fair value	$	3,140,259	$	3,440,383