Fair Value Measurements and Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 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 March 31, 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.

	March 31, 2015
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	305,145	$	222,614		$	—	$	527,759
Equity securities	—		27,625			—		27,625
Commingled fixed income securities	—		23,868			—		23,868
U.S. Government, federal agencies and municipalities	114,396		22,399			—		136,795
Corporate notes and bonds	—		66,308			—		66,308
Mortgage-backed / asset-backed securities	—		165,243			—		165,243
Derivatives
Foreign exchange contracts	—		2,834			—		2,834
Total assets	$	419,541	$	530,891		$	—	$	950,432
Liabilities:
Derivatives
Foreign exchange contracts	$	—	$	(4,705	)	$	—	$	(4,705	)
Total liabilities	$	—	$	(4,705	)	$	—	$	(4,705	)

	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 March 31, 2015 and December 31, 2014 consisted of the following:

	March 31, 2015
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
U.S. Government, federal agencies and municipalities	$	133,904	$	3,342	$	(452	)	$	136,794
Corporate notes and bonds	64,169		2,224		(85		)	66,308
Mortgage-backed / asset-backed securities	162,841		3,147		(745		)	165,243
Total	$	360,914	$	8,713	$	(1,282	)	$	368,345

	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 March 31, 2015 were as follows:

	Amortized cost		Estimated fair value
Within 1 year	$	62,578	$	62,641
After 1 year through 5 years	61,094		62,380
After 5 years through 10 years	63,198		65,364
After 10 years	174,044		177,960
Total	$	360,914	$	368,345

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

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

Designation of Derivatives	Balance Sheet Location	March 31, 2015			December 31, 2014
Derivatives designated as hedging instruments
Foreign exchange contracts	Other current assets and prepayments	$	1,144		$	762
Derivatives not designated as hedging instruments
Foreign exchange contracts	Other current assets and prepayments	1,690			624
	Accounts payable and accrued liabilities:	(4,705		)	(2,988		)
	Total derivative assets	$	2,834		$	1,386
	Total derivative liabilities	(4,705		)	(2,988		)
	Total net derivative liabilities	$	(1,871	)	$	(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 months ended March 31,2015 and 2014:

	Three Months Ended March 31,
	Derivative Gain (Loss) Recognized in AOCI (Effective Portion)						Location of Gain (Loss) (Effective Portion)	Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)
Derivative Instrument	2015			2014				2015			2014
Foreign exchange contracts	$	(409	)	$	(69	)	Revenue	$	(396	)	$	(234	)
							Cost of sales	(395		)	199
								$	(791	)	$	(35	)

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 months ended March 31,2015 and 2014:

		Three Months Ended March 31,
		Derivative Gain (Loss) Recognized in Earnings
Derivatives Instrument	Location of Derivative Gain (Loss)	2015			2014
Foreign exchange contracts	Selling, general and administrative expense	$	(208	)	$	(682	)

Fair Value, by Balance Sheet Grouping

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

	March 31, 2015		December 31, 2014
Carrying value	$	3,075,231	$	3,252,006
Fair value	$	3,294,522	$	3,440,383