National Instruments (NATI) 10-Q 1 May 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 27, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2015
Entity Registrant Name	NATIONAL INSTRUMENTS CORP /DE/
Entity Central Index Key	935494
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		128,151,551

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$239,548	$274,030
Short-term investments	203,721	197,163
Accounts receivable, net	190,992	202,329
Inventories, net	177,980	173,052
Prepaid expenses and other current assets	72,575	70,075
Deferred income taxes, net	31,406	31,171
Total current assets	916,222	947,820
Property and equipment, net	263,322	264,086
Goodwill	166,974	144,325
Intangible assets, net	75,421	78,282
Other long-term assets	21,120	20,978
Total assets	1,443,059	1,455,491
Current liabilities:
Accounts payable	57,671	58,603
Accrued compensation	23,656	33,774
Deferred revenue - current	109,300	105,964
Accrued expenses and other liabilities	12,930	14,714
Other taxes payable	31,589	34,602
Total current liabilities	235,146	247,657
Deferred income taxes	46,485	47,406
Liability for uncertain tax positions	10,256	10,127
Deferred revenue- long term	26,136	26,452
Other long-term liabilities	10,088	6,353
Total liabilities	328,111	337,995
Commitments and contingencies
Stockholders' equity:
Preferred stock: par value $0.01; 5,000,000 shares authorized; none issued and outstanding
Common stock: par value $0.01; 360,000,000 shares authorized; 128,147,815 shares and 127,849,271 shares issued and outstanding, respectively	1,281	1,278
Additional paid-in capital	680,228	662,889
Retained earnings	455,651	464,993
Accumulated other comprehensive loss	-22,212	-11,664
Total stockholders' equity	1,114,948	1,117,496
Total liabilities and stockholders' equity	$1,443,059	$1,455,491

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	360,000,000	360,000,000
Common stock, shares issued	128,147,815	127,849,271
Common stock, shares outstanding	128,147,815	127,849,271

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net sales:
Product	$261,574	$262,264
Software maintenance	27,939	22,410
Total net sales	289,513	284,674
Cost of sales:
Product	74,881	69,621
Software maintenance	1,455	1,581
Total cost of sales	76,336	71,202
Gross profit	213,177	213,472
Operating expenses:
Sales and marketing	109,553	111,916
Research and development	60,520	55,259
General and administrative	22,971	22,473
Total operating expenses	193,044	189,648
Operating income	20,133	23,824
Other income:
Interest income	353	197
Net foreign exchange (loss) gain	-1,674	50
Other (loss) income, net	628	88
Income before income taxes	19,440	24,159
(Benefit from) provision for income taxes	4,436	5,436
Net income	$15,004	$18,723
Basic earnings per share	$0.12	$0.15
Weighted average shares outstanding - basic	128,040	125,973
Diluted earnings per share	$0.12	$0.15
Weighted average shares outstanding - diluted	128,676	126,725
Dividends declared per share	$0.19	$0.15

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$15,004	$18,723
Other comprehensive income, before tax and net of reclassification adjustments:
Foreign currency translation adjustment	-14,951	-1,139
Unrealized (loss) gain on securities available-for-sale	506	192
Unrealized gain (loss) on derivative instruments	982	-1,873
Other comprehensive loss, before tax	-13,463	-2,820
Tax expense related to items of other comprehensive income	-2,915	-774
Other comprehensive loss, net of tax	-10,548	-2,046
Comprehensive income	$4,456	$16,677

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flow from operating activities:
Net income	$15,004	$18,723
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,924	16,994
Stock-based compensation	6,391	6,553
Tax benefit from deferred income taxes	-2,238	-3,198
Tax benefit from stock option plans	-16	-70
Changes in operating assets and liabilities:
Accounts receivable	11,828	-865
Inventories	-2,797	1,852
Prepaid expenses and other assets	-8,254	-2,790
Accounts payable	-1,700	6,213
Deferred revenue	2,909	5,910
Taxes, accrued expenses and other liabilities	-12,640	-3,180
Net cash provided by operating activities	26,411	46,142
Cash flow from investing activities:
Capital expenditures	-10,263	-11,959
Capitalization of internally developed software	-2,222	-7,602
Additions to other intangibles	-399	-1,049
Acquisition, net of cash received	-24,523
Purchases of short-term investments	-22,332	-9,649
Sales and maturities of short-term investments	15,774	3,389
Net cash used in investing activities	-43,965	-26,870
Cash flow from financing activities:
Proceeds from issuance of common stock	7,402	10,000
Dividends paid	-24,346	-18,904
Tax benefit from stock option plans	16	70
Net cash used in financing activities	-16,928	-8,834
Net change in cash and cash equivalents	-34,482	10,438
Cash and cash equivalents at beginning of period	274,030	230,263
Cash and cash equivalents at end of period	$239,548	$240,701

Basis_Of_Presentation

Basis Of Presentation	3 Months Ended
	Mar. 31, 2015
Basis Of Presentation [Abstract]
Basis Of Presentation	Note 1 – Basis of presentation
	The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2014, included in our annual report on Form 10-K, filed with the Securities and Exchange Commission. In our opinion, the accompanying consolidated financial statements reflect all adjustments (consisting only of normal recurring items) considered necessary to present fairly our financial position at March 31, 2015 and December 31, 2014, and the results of our operations, comprehensive income, and cash flows for the three month periods ended March 31, 2015 and March 31, 2014. Our operating results for the three month period ended March 31, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Note 2 – Earnings per share
	Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income by the weighted average number of common shares and common share equivalents outstanding (if dilutive) during each period. The number of common share equivalents, which include stock options and restricted stock units (“RSUs”), is computed using the treasury stock method.
	The reconciliation of the denominators used to calculate basic EPS and diluted EPS for the three months ended March 31, 2015 and 2014, are as follows:
		Three Months Ended March 31,
		(In thousands)
		(Unaudited)
		2015	2014
	Weighted average shares outstanding-basic	128,040	125,973
	Plus: Common share equivalents
	Stock options and RSUs	636	752
	Weighted average shares outstanding-diluted	128,676	126,725
	Stock awards to acquire 46,400 shares and 61,500 shares for the three months ended March 31, 2015 and 2014 were excluded in the computations of diluted EPS because the effect of including the stock awards would have been anti-dilutive.

Cash_Cash_Equivalents_And_Shor

Cash, Cash Equivalents And Short-Term Investments	3 Months Ended
	Mar. 31, 2015
Cash, Cash Equivalents And Short-Term Investments [Abstract]
Cash, Cash Equivalents And Short-Term Investments	Note 3 – Cash, cash equivalents and short-term investments
	The following tables summarize unrealized gains and losses related to our cash, cash equivalents, and short-term investments designated as available-for-sale:
			As of March 31, 2015
	(In thousands)		(Unaudited)
					Gross		Gross		Cumulative
			Adjusted Cost		Unrealized Gain		Unrealized Loss		Translation Adjustment		Fair Value
	Cash	$	134,865	$	-	$	-	$	-	$	134,865
	Money Market Accounts		104,683		-		-		-		104,683
	Corporate bonds		127,690		121		-42		-7,461		120,308
	U.S. treasuries and agencies		73,992		60		-1		-		74,051
	Foreign government bonds		8,863		-		-		-2,413		6,450
	Time deposits		2,912		-		-		-		2,912
	Cash, cash equivalents, and short-term investments	$	453,005	$	181	$	-43	$	-9,874	$	443,269
	(In thousands)		31-Dec-14
					Gross		Gross		Cumulative
			Adjusted Cost		Unrealized Gain		Unrealized Loss		Translation Adjustment		Fair Value
	Cash	$	149,598	$	-	$	-	$	-	$	149,598
	Money Market Accounts		124,432		-		-		-		124,432
	Corporate bonds		118,242		54		-254		-4,966		113,076
	U.S. treasuries and agencies		73,919		1		-8		-		73,912
	Foreign government bonds		8,841		8		-		-1,586		7,263
	Time deposits		2,912		-		-		-		2,912
	Cash, cash equivalents, and short-term investments	$	477,944	$	63	$	-262	$	-6,552	$	471,193
	The following tables summarize the contractual maturities of our short-term investments designated as available-for-sale:
			As of March 31, 2015
	(In thousands)		(Unaudited)
			Adjusted Cost		Fair Value
	Due in less than 1 year	$	59,835	$	57,464
	Due in 1 to 5 years		153,622		146,257
	Total available-for-sale debt securities	$	213,457	$	203,721
	Due in less than 1 year		Adjusted Cost		Fair Value
	Corporate bonds	$	43,412	$	43,455
	U.S. treasuries and agencies		4,648		4,647
	Foreign government bonds		8,863		6,450
	Time deposits		2,912		2,912
	Total available-for-sale debt securities	$	59,835	$	57,464
	Due in 1 to 5 years		Adjusted Cost		Fair Value
	Corporate bonds	$	84,278	$	76,853
	U.S. treasuries and agencies		69,344		69,404
	Total available-for-sale debt securities	$	153,622	$	146,257

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements [Abstract]
Fair Value Measurements	Note 4 – Fair value measurements
	We define fair value to be the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, we consider the principal or most advantageous market that market participants may use when pricing the asset or liability.
	We follow a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. Fair value measurement is determined based on the lowest level input that is significant to the fair value measurement. The three values of the fair value hierarchy are the following:
	Level 1 – Quoted prices in active markets for identical assets or liabilities
	Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly
	Level 3 – Inputs that are not based on observable market data
	Assets and liabilities measured at fair value on a recurring basis are summarized below:
			Fair Value Measurements at Reporting Date Using
	(In thousands)		(Unaudited)
	Description		31-Mar-15		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	Assets
	Cash and cash equivalents available for sale:
	Money Market Funds	$	104,683	$	104,683	$	-	$	-
	Short-term investments available for sale:
	Corporate bonds		120,308		-		120,308		-
	U.S. treasuries and agencies		74,051		-		74,051		-
	Foreign government bonds		6,450		-		6,450		-
	Time deposits		2,912		2,912		-		-
	Derivatives		21,087		-		21,087		-
	Total Assets	$	329,491	$	107,595	$	221,896	$	-
	Liabilities
	Derivatives	$	-7,979	$	-	$	-7,979	$	-
	Total Liabilities	$	-7,979	$	-	$	-7,979	$	-
	(In thousands)		Fair Value Measurements at Reporting Date Using
	Description		31-Dec-14		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	Assets
	Cash and cash equivalents available for sale:
	Money Market Funds	$	124,432	$	124,432	$	-	$	-
	Short-term investments available for sale:
	Corporate bonds		113,076		-		113,076		-
	U.S. treasuries and agencies		73,912		-		73,912		-
	Foreign government bonds		7,263		-		7,263		-
	Time deposits		2,912		2,912		-		-
	Derivatives		16,151		-		16,151		-
	Total Assets	$	337,746	$	127,344	$	210,402	$	-
	Liabilities
	Derivatives	$	-4,253	$	-	$	-4,253	$	-
	Total Liabilities	$	-4,253	$	-	$	-4,253	$	-
	We value our available-for-sale short-term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available-for-sale short-term investments. Short-term investments available-for-sale consists of debt securities issued by states of the U.S. and political subdivisions of the U.S., corporate debt securities and debt securities issued by U.S. government organizations and agencies as well as debt securities issued by foreign governments. All short-term investments available-for-sale have contractual maturities of less than 40 months.
	Derivatives include foreign currency forward and option contracts. Our foreign currency forward contracts are valued using an income approach (Level 2) based on the spot rate less the contract rate multiplied by the notional amount. Our foreign currency option contracts are valued using a market approach based on the quoted market prices which are derived from observable inputs including current and future spot rates, interest rate spreads as well as quoted market prices of similar instruments. We consider counterparty credit risk in the valuation of our derivatives. However, counterparty credit risk did not impact the valuation of our derivatives during the three month period ended March 31, 2015. There were no transfers in or out of Level 1 or Level 2 during the three month period ended March 31, 2015.
	Our foreign government bonds consist of German government sovereign debt denominated in Euro with maximum remaining maturities of two months. Our short-term investments do not involve sovereign debt from any other country in Europe.
	We did not have any items that were measured at fair value on a nonrecurring basis at March 31, 2015 and December 31, 2014.
	The carrying value of net accounts receivable and accounts payable contained in the Consolidated Balance Sheets approximates fair value.

Derivative_Instruments_And_Hed

Derivative Instruments And Hedging Activities	3 Months Ended
	Mar. 31, 2015
Derivative Instruments And Hedging Activities [Abstract]
Derivative Instruments And Hedging Activities	Note 5 – Derivative instruments and hedging activities
	We recognize all of our derivative instruments as either assets or liabilities in our statement of financial position at fair value. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, we designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge, or a hedge of a net investment in a foreign operation.
	We have operations in over 50 countries. Sales outside of the Americas accounted for approximately 59% and 60% of our revenues during the three month periods ended March 31, 2015 and 2014, respectively. Our activities expose us to a variety of market risks, including the effects of changes in foreign currency exchange rates. These financial risks are monitored and managed by us as an integral part of our overall risk management program.
	We maintain a foreign currency risk management strategy that uses derivative instruments (foreign currency forward and purchased option contracts) to help protect our earnings and cash flows from fluctuations caused by the volatility in currency exchange rates. Movements in foreign currency exchange rates pose a risk to our operations and competitive position, in that exchange rate changes may affect our profitability and cash flow, and the business or pricing strategies of our non-U.S. based competitors.
	The vast majority of our foreign sales are denominated in the customers’ local currency. We purchase foreign currency forward and option contracts as hedges of forecasted sales that are denominated in foreign currencies and as hedges of foreign currency denominated receivables. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash inflows resulting from such sales or firm commitments will be adversely affected by changes in exchange rates. We also purchase foreign currency forward contracts as hedges of forecasted expenses that are denominated in foreign currencies. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash outflows resulting from foreign currency operating and cost of revenue expenses will be adversely affected by changes in exchange rates.
	We designate foreign currency forward and purchased option contracts as cash flow hedges of forecasted revenues or forecasted expenses. In addition, we hedge our foreign currency denominated balance sheet exposures using foreign currency forward contracts that are not designated as hedging instruments. None of our derivative instruments contain a credit-risk-related contingent feature.
	Cash flow hedges
	To help protect against the reduction in value caused by a fluctuation in foreign currency exchange rates of forecasted foreign currency cash flows resulting from international sales over the next one to three years, we have instituted a foreign currency cash flow hedging program. We hedge portions of our forecasted revenue and forecasted expenses denominated in foreign currencies with forward and purchased option contracts. For forward contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the forward contracts designated as hedges. For option contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the option contracts net of the premium paid designated as hedges. Our foreign currency purchased option contracts are purchased “at-the-money” or “out-of-the-money.” We purchase foreign currency forward and option contracts for up to 100% of our forecasted exposures in selected currencies (primarily in Euro, Japanese yen, Hungarian forint, British pound, and Malaysian ringgit) and limit the duration of these contracts to 40 months or less.
	For derivative instruments that are designated and qualify as a cash flow hedge, the effective portion of the gain or loss on the derivative is reported as a component of accumulated other comprehensive income (“OCI”) and reclassified into earnings in the same line item (net sales, operating expenses, or cost of sales) associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings or expenses during the current period and are classified as a component of “net foreign exchange loss.” Hedge effectiveness of foreign currency forwards and purchased option contracts designated as cash flow hedges are measured by comparing the hedging instrument’s cumulative change in fair value from inception to maturity to the forecasted transaction’s terminal value.
	We held forward contracts with the following notional amounts:
	(In thousands)		US Dollar Equivalent
			As of March 31, 2015		As of December 31,
			(Unaudited)		2014
	Euro	$	78,912	$	97,198
	Japanese yen		5,296		7,798
	Hungarian forint		58,417		61,067
	British pound		17,199		22,809
	Malaysian ringgit		17,681		10,241
	Total forward contracts notional amount	$	177,505	$	199,113
	The contracts in the foregoing table had contractual maturities of 36 months or less at March 31, 2015 and December 31, 2014.
	At March 31, 2015, we expect to reclassify $12 million of gains on derivative instruments from accumulated OCI to net sales during the next twelve months when the hedged international sales occur, $1.9 million of losses on derivative instruments from accumulated OCI to cost of sales during the next twelve months when the cost of sales are incurred and $1.5 million of losses on derivative instruments from accumulated OCI to operating expenses during the next twelve months when the hedged operating expenses occur. Expected amounts are based on derivative valuations at March 31, 2015. Actual results may vary as a result of changes in the corresponding exchange rates subsequent to this date.
	We did not record any ineffectiveness from our hedges during the three months ended March 31, 2015 and 2014.
	Other Derivatives
	Other derivatives not designated as hedging instruments consist primarily of foreign currency forward contracts that we use to hedge our foreign denominated net receivable or net payable positions to protect against the change in value caused by a fluctuation in foreign currency exchange rates. We typically attempt to hedge up to 90% of our outstanding foreign denominated net receivables or net payables and typically limit the duration of these foreign currency forward contracts to approximately 120 days. The gain or loss on the derivatives as well as the offsetting gain or loss on the hedge item attributable to the hedged risk is recognized in current earnings under the line item “net foreign exchange gain (loss).” As of March 31, 2015 and December 31, 2014, we held foreign currency forward contracts with a notional amount of $77 million and  $78 million, respectively.
	The following tables present the fair value of derivative instruments on our Consolidated Balance Sheets at March 31, 2015 and December 31, 2014, respectively.
		Asset Derivatives
		31-Mar-15			31-Dec-14
	(In thousands)	(Unaudited)
		Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
	Derivatives designated as hedging instruments
	Foreign exchange contracts - ST forwards	Prepaid expenses and other current assets	$	19,695	Prepaid expenses and other current assets	$	14,492
	Foreign exchange contracts - LT forwards	Other long-term assets		-	Other long-term assets		-
	Total derivatives designated as hedging instruments		$	19,695		$	14,492
	Derivatives not designated as hedging instruments
	Foreign exchange contracts - ST forwards	Prepaid expenses and other current assets	$	1,392	Prepaid expenses and other current assets	$	1,659
	Total derivatives not designated as hedging instruments		$	1,392		$	1,659
	Total derivatives		$	21,087		$	16,151
		Liability Derivatives
		31-Mar-15			31-Dec-14
	(In thousands)	(Unaudited)
		Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
	Derivatives designated as hedging instruments
	Foreign exchange contracts - ST forwards	Accrued expenses and other liabilities	$	-3,398	Accrued expenses and other liabilities	$	-1,937
	Foreign exchange contracts - LT forwards	Other long-term liabilities		-4,188	Other long-term liabilities		-1,536
	Total derivatives designated as hedging instruments		$	-7,586		$	-3,473
	Derivatives not designated as hedging instruments
	Foreign exchange contracts - ST forwards	Accrued expenses and other liabilities	$	-393	Accrued expenses and other liabilities	$	-780
	Total derivatives not designated as hedging instruments		$	-393		$	-780
	Total derivatives		$	-7,979		$	-4,253
	The following tables present the effect of derivative instruments on our Consolidated Statements of Income for three month periods ended March 31, 2015 and 2014, respectively:
	31-Mar-15
	(In thousands)
	(Unaudited)
	Derivatives in Cash Flow Hedging Relationship		Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)		Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
	Foreign exchange contracts - forwards and options	$	5,203	Net sales	$	5,081	Net foreign exchange gain (loss)	$	-
	Foreign exchange contracts - forwards and options		-2,217	Cost of sales		-333	Net foreign exchange gain (loss)		-
	Foreign exchange contracts - forwards and options		-2,004	Operating expenses		-364	Net foreign exchange gain (loss)		-
	Total	$	982		$	4,384		$	-
	31-Mar-14
	(In thousands)
	(Unaudited)
	Derivatives in Cash Flow Hedging Relationship		Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)		Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
	Foreign exchange contracts - forwards and options	$	-1,035	Net sales	$	346	Net foreign exchange gain (loss)	$	-
	Foreign exchange contracts - forwards and options		-597	Cost of sales		81	Net foreign exchange gain (loss)		-
Foreign exchange contracts - forwards and options		-241	Operating expenses		18	Net foreign exchange gain (loss)		-
Total	$	-1,873		$	445		$	-
(In thousands)
Derivatives not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income		Amount of Gain (Loss) Recognized in Income		Amount of Gain (Loss) Recognized in Income
			31-Mar-15		31-Mar-14
			(Unaudited)		(Unaudited)
Foreign exchange contracts - forwards	Net foreign exchange gain/(loss)	$	1,945	$	-68
Total		$	1,945	$	-68

Inventories_Net

Inventories, Net	3 Months Ended
	Mar. 31, 2015
Inventories, Net [Abstract]
Inventories	Note 6 – Inventories, net
	Inventories, net consist of the following:
			31-Mar-15		December 31,
	(In thousands)		(Unaudited)		2014
	Raw materials	$	89,397	$	79,376
	Work-in-process		6,831		6,675
	Finished goods		81,752		87,001
		$	177,980	$	173,052

Intangible_Assets_Net

Intangible Assets, Net	3 Months Ended
	Mar. 31, 2015
Intangible Assets, Net [Abstract]
Intangible Assets	Note 7 – Intangible assets, net
	Intangible assets at March 31, 2015 and December 31, 2014 are as follows:
			31-Mar-15
	(In thousands)		(Unaudited)						31-Dec-14
			Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	Capitalized software development costs	$	59,889	$	-26,700	$	33,189	$	58,343	$	-22,853	$	35,490
	Acquired technology		90,834		-67,961		22,873		88,216		-65,663		22,553
	Patents		28,195		-13,328		14,867		27,791		-12,859		14,932
	Other		27,767		-23,275		4,492		28,380		-23,073		5,307
		$	206,685	$	-131,264	$	75,421	$	202,730	$	-124,448	$	78,282
	Software development costs capitalized for the three month periods ended March 31, 2015 and 2014 were $2.3 million and $8.0 million, respectively, and related amortization expense was $4.6 million and $3.1 million, respectively. Capitalized software development costs for the three month periods ended March 31, 2015 and 2014 included costs related to stock based compensation of $95,000 and $378,000, respectively. The related amounts in the table above are net of fully amortized assets.
	Amortization of capitalized software development costs is computed on an individual product basis for those products available for market and is recognized based on the product’s estimated economic life, generally three years. Acquired technology and other intangible assets are amortized over their useful lives, which range from three to eight years. Patents are amortized using the straight-line method over their estimated period of benefit, generally 10 to 17 years. Total intangible assets amortization expenses were $8.8 million and $7.6 million for the three months ended March 31, 2015 and 2014, respectively.

Goodwill

Goodwill	3 Months Ended
	Mar. 31, 2015
Goodwill [Abstract]
Goodwill	Note 8 – Goodwill
	The carrying amount of goodwill as of March 31, 2015, was as follows:
			Amount
			(In thousands)
	Balance as of December 31, 2014	$	144,325
	Acquisitions		24,429
	Foreign currency translation impact		-1,780
	Balance as of March 31, 2015 (unaudited)	$	166,974
	The excess purchase price over the fair value of assets acquired is recorded as goodwill. As we have one operating segment, we allocate goodwill to one reporting unit for goodwill impairment testing. Goodwill is tested for impairment on an annual basis, and between annual tests if indicators of potential impairment exist, using a fair-value-based approach based on the market capitalization of the reporting unit. Our annual impairment test was performed as of February 28, 2015.  No impairment of goodwill was identified during 2015 or 2014.
	See “Note 17 – Acquisitions” of Notes to Consolidated Financial Statements for additional discussion related to our acquisitions in the first quarter of 2015.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Taxes [Abstract]
Income Taxes	Note 9 – Income taxes
	We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax bases of assets and liabilities and their reported amounts. Valuation allowances are established when necessary to reduce deferred tax assets to amounts which are more likely than not to be realized.
	We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. We had $11.2 million and $11.1 million of unrecognized tax benefits at March 31, 2015 and December 31, 2014, respectively, all of which would affect our effective income tax rate if recognized. We recorded a gross increase in unrecognized tax benefits of $52,000 for the three month period ended March 31, 2015, as a result of tax positions taken during this period. Our continuing policy is to recognize interest and penalties related to income tax matters in income tax expense. As of March 31, 2015, we had approximately $948,000 accrued for interest related to uncertain tax positions. The tax years 2008 through 2014 remain open to examination by the major taxing jurisdictions to which we are subject.
	Our provision for income taxes reflected an effective tax rate of 23% for each of the three month periods ended March 31, 2015 and 2014. For the three month periods ended March 31, 2015 and 2014, our effective tax rate was lower than the U.S. federal statutory rate of 35% as a result of an enhanced deduction for certain research and development expenses, profits in foreign jurisdictions with reduced income tax rates, and a tax benefit from disqualifying dispositions of equity awards that do not ordinarily result in a tax benefit.
	Our earnings in Hungary are subject to a statutory tax rate of 19%. The difference between this rate and the statutory U.S. rate of 35% resulted in income tax benefits of $901,000 and $1.6 million for the three month periods ended March 31, 2015 and 2014, respectively.
	The tax position of our Hungarian operation continues to benefit from assets created by the restructuring of our operations in Hungary. In addition, our research and development activities in Hungary continue to benefit from a tax law in Hungary that provides for an enhanced deduction for qualified research and development expenses. Partial release of the valuation allowance on assets from the restructuring and the enhanced tax deduction for research expenses resulted in income tax benefits of $1.8 million and $2.5 million for the three month periods ended March 31, 2015 and 2014, respectively.
	Earnings from our operations in Malaysia are free of tax under a tax holiday effective January 1, 2013. This tax holiday expires in 2027. If we fail to satisfy the conditions of the tax holiday, this tax benefit may be terminated early. The tax holiday resulted in income tax benefits of $447,000 and $306,000 for the three month periods ended March 31, 2015 and 2014, respectively.
	No other taxing jurisdictions had a significant impact on our effective tax rate. We have not entered into any advanced pricing or other agreements with the IRS with regard to any foreign jurisdictions.

Comprehensive_Income

Comprehensive Income	3 Months Ended
	Mar. 31, 2015
Comprehensive Income [Abstract]
Comprehensive Income
	Note 10 – Comprehensive income
	Our comprehensive income is comprised of net income, foreign currency translation, unrealized gains and losses on forward and option contracts and securities classified as available-for-sale. The accumulated other comprehensive income, net of tax, for the three month periods ended March 31, 2015 and 2014, consisted of the following:
			31-Mar-15
			(Unaudited)
	(In thousands)		Currency translation adjustment		Investments		Derivative instruments		Accumulated other comprehensive income/(loss)
	Balance as of December 31, 2014	$	-17,304	$	-1,399	$	7,039	$	-11,664
	Current-period other comprehensive (loss) income		-14,951		506		5,366		-9,079
	Reclassified from accumulated OCI into income		-		-		-4,384		-4,384
	Income tax (benefit) expense		-3,412		115		382		-2,915
	Balance as of March 31, 2015	$	-28,843	$	-1,008	$	7,639	$	-22,212
			31-Mar-14
			(Unaudited)
	(In thousands)		Currency translation adjustment		Investments		Derivative instruments		Accumulated other comprehensive income/(loss)
	Balance as of December 31, 2013	$	1,311	$	-1,066	$	2,305	$	2,550
	Current-period other comprehensive (loss) income		-1,139		192		-1,428		-2,375
	Reclassified from accumulated OCI into income		-		-		-445		-445
	Income tax (benefit) expense		-255		62		-581		-774
	Balance as of March 31, 2014	$	427	$	-936	$	1,013	$	504

Authorized_Shares_Of_Common_An

Authorized Shares Of Common And Preferred Stock And Stock-Based Compensation Plans	3 Months Ended
	Mar. 31, 2015
Authorized Shares Of Common And Preferred Stock And Stock-Based Compensation Plans [Abstract]
Authorized Shares Of Common And Preferred Stock And Stock-Based Compensation Plans	Note 11 – Authorized shares of common and preferred stock and stock-based compensation plans
	Authorized shares of common and preferred stock
	Following approval by the Company’s Board of Directors and stockholders, on May 14, 2013, the Company’s certificate of incorporation was amended to increase the authorized shares of common stock by 180,000,000 shares to a total of 360,000,000 shares. As a result of this amendment, the total number of shares which the Company is authorized to issue is 365,000,000 shares, consisting of (i) 5,000,000 shares of preferred stock, par value $.01 per share, and (ii) 360,000,000 shares of common stock, par value $.01 per share.
	Stock option plans
	Our stockholders approved the 1994 Incentive Stock Option Plan (the “1994 Plan”) in May 1994. At the time of approval, 13,668,750 shares of our common stock were reserved for issuance under this plan. In 1997, an additional 10,631,250 shares of our common stock were reserved for issuance under this plan, and an additional 1,125,000 shares were reserved for issuance under this plan in 2004. The 1994 Plan terminated in May 2005, except with respect to outstanding awards previously granted thereunder.
	Awards under the plan were either incentive stock options within the meaning of Section 422 of the Internal Revenue Code or nonqualified options. The right to purchase shares under the options vests over a five to ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company’s previous year’s earnings and revenue growth but shares cannot accelerate to vest over a period of less than five years. Stock options must be exercised within ten years from date of grant. Stock options were issued with an exercise price which was equal to the market price of our common stock at the grant date. We estimate potential forfeitures of stock grants and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. During three month period ended March 31, 2015, we did not make any changes in accounting principles or methods of estimates related to the 1994 Plan.
	Restricted stock plan
	Our stockholders approved our 2005 Incentive Plan (the “2005 Plan”) in May 2005. At the time of approval, 4,050,000 shares of our common stock were reserved for issuance under this plan, as well as the number of shares which had been reserved but not issued under the 1994 Plan (our incentive stock option plan which terminated in May 2005), and any shares that returned to the 1994 Plan as a result of termination of options or repurchase of shares issued under such plan. The 2005 Plan, administered by the Compensation Committee of the Board of Directors, provided for granting of incentive awards in the form of restricted stock and RSUs to directors, executive officers and employees of the Company and its subsidiaries. Awards vest over a three,  five or ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company’s previous year’s earnings and growth but ten year awards cannot accelerate to vest over a period of less than five years. The 2005 Plan terminated on May 11, 2010, except with respect to outstanding awards previously granted thereunder. There were 3,362,304 shares of common stock that were reserved but not issued under the 1994 Plan and the 2005 Plan as of May 11, 2010.
	Our stockholders approved our 2010 Incentive Plan (the “2010 Plan”) on May 11, 2010. At the time of approval, 3,000,000 shares of our common stock were reserved for issuance under this plan, as well as the 3,362,304 shares of common stock that were reserved but not issued under the 1994 Plan and the 2005 Plan as of May 11, 2010, and any shares that are returned to the 1994 Plan and the 2005 Plan as a result of the forfeiture or termination of options or RSUs or repurchase of shares issued under these plans. The 2010 Plan, administered by the Compensation Committee of the Board of Directors, provides for granting of incentive awards in the form of restricted stock and RSUs to employees, directors and consultants of the Company and employees and consultants of any parent or subsidiary of the Company. Awards vest over a three,  five or ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company’s previous year’s earnings and growth but ten year awards cannot accelerate to vest over a period of less than five years. There were 3,205,101 shares available for grant under the 2010 Plan at March 31, 2015.
	We estimate potential forfeitures of RSUs and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. During the three month period ended March 31, 2015, we did not make any changes in accounting principles or methods of estimates related to the 2010 Plan.
	Employee stock purchase plan
	Our employee stock purchase plan permits substantially all domestic employees and employees of designated subsidiaries to acquire our common stock at a purchase price of 85% of the lower of the market price at the beginning or the end of the purchase period. The plan has quarterly purchase periods generally beginning on February 1, May 1, August 1 and November 1 of each year. Employees may designate up to 15% of their compensation for the purchase of common stock under this plan. On May 13, 2014, our stockholders approved an additional 3,000,000 shares for issuance under our employee stock purchase plan. At March 31, 2015, we had 2,982,400 shares of common stock reserved for future issuance under this plan. We issued 276,633 shares under this plan in the three month period ended March 31, 2015. The weighted average purchase price of the employees’ purchase rights was $25.57 per share. During the three month period ended March 31, 2015, we did not make any changes in accounting principles or methods of estimates with respect to such plan.
	Authorized Preferred Stock and Preferred Stock Purchase Rights Plan
	We have 5,000,000 authorized shares of preferred stock. On January 21, 2004, our Board of Directors designated 750,000 of these shares as Series A Participating Preferred Stock in conjunction with the adoption of a Preferred Stock Rights Agreement which expired on May 10, 2014. There were no shares of preferred stock issued and outstanding at March 31, 2015.
	Stock repurchases and retirements
	From time to time, our Board of Directors has authorized various programs to repurchase shares of our common stock depending on market conditions and other factors. We did not make any purchases under this program during the three month period ended March 31, 2015. At March 31, 2015, there were 3,932,245 shares remaining available for repurchase under this program. This repurchase program does not have an expiration date.
	During the three month period ended March 31, 2015, we received less proceeds from the exercise of stock options compared to the three month period ended March 31, 2014. The timing and number of stock option exercises and the amount of cash proceeds we receive through those exercises are not within our control. Since 2005, it has been our practice to issue RSUs and not stock options to eligible employees which has reduced the number of stock options available for exercise in the future. Unlike the exercise of stock options, the issuance of shares upon vesting of RSUs does not result in any cash proceeds to us. At March 31, 2015, there were outstanding options to purchase 6,652 shares, and all of such options have contractual expiration dates in 2015. These options have a weighted average exercise price of $14.99 per share. As such, we will generate significantly less proceeds from stock option exercises in 2015 compared to 2014.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Information [Abstract]
Segment Information	Note 12 – Segment information
	We determine operating segments using the management approach. The management approach designates the internal organization that is used by management for making operating decisions and assessing performance as the source of our operating segments. It also requires disclosures about products and services, geographic areas and major customers.
	We define the term “chief operating decision maker” to be our Chief Executive Officer. Our Chief Executive Officer reviews our financial information on a consolidated basis for purposes of allocating resources and evaluating financial performance. Accordingly, we have determined that we operate a single operating segment and a single reporting unit.
	We sell our products in four geographic regions. Our sales to these regions share similar economic characteristics, similar product mix, similar customers, and similar distribution methods. Revenue from the sale of our products which are similar in nature and software maintenance is reflected as total net sales in our Consolidated Statements of Income.
	Total net sales by the major geographic areas in which we operate, are as follows:
			Three Months Ended March 31,
	(In thousands)		(Unaudited)
			2015		2014
	Net sales:
	Americas	$	118,388	$	115,106
	Europe		80,916		83,857
	East Asia		64,530		61,348
	Emerging Markets		25,679		24,363
		$	289,513	$	284,674
	Based on the billing location of the customer, total sales outside the U.S. for the three month periods ended March 31, 2015 and 2014 were $179 million and $178 million, respectively.
	Total property and equipment, net, outside the U.S. was $145 million for each of the three month periods ended March 31, 2015 and December 31, 2014.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt [Abstract]
Debt	Note 13 - Debt
	On May 9, 2013, we entered into a Loan Agreement (the “Loan Agreement”) with Wells Fargo Bank, National Association. The Loan Agreement provides for a $50 million unsecured revolving line of credit with a scheduled maturity date of May 9, 2018 (the “Maturity Date”). Proceeds of loans made under the Loan Agreement may be used for working capital and other general corporate purposes. We may prepay the loans under the Loan Agreement in whole or in part at any time without premium or penalty. Certain of our existing and future material domestic subsidiaries are required to guaranty our obligations under the Loan Agreement. As of March 31, 2015, we had $50 million available for borrowings under this revolving line of credit.
	The loans bear interest, at our option, at a base rate determined in accordance with the Loan Agreement, plus a spread of 0.0% to 0.5%, or a LIBOR rate plus a spread of 1.125% to 2.0%, in each case with such spread determined based on a ratio of consolidated indebtedness to EBITDA, determined in accordance with the Loan Agreement. Principal, together with all accrued and unpaid interest, is due and payable on the Maturity Date. We are also obligated to pay a quarterly commitment fee, payable in arrears, based on the available commitments at a rate of 0.175% to 0.300%, with such rate determined based on the ratio described above. The Loan Agreement contains customary affirmative and negative covenants. The affirmative covenants include, among other things, delivery of financial statements, compliance certificates and notices; payment of taxes and other obligations; maintenance of existence; maintenance of properties and insurance; and compliance with applicable laws and regulations. The negative covenants include, among other things, limitations on indebtedness, liens, mergers, consolidations, acquisitions and sales of assets, investments, changes in the nature of the business, affiliate transactions and certain restricted payments. The Loan Agreement also requires us to maintain a ratio of consolidated indebtedness to EBITDA equal to or less than 3.25 to 1.00, and a ratio of consolidated EBITDA to interest expense greater than or equal to 3.00 to 1.00, in each case determined in accordance with the Loan Agreement. As of March 31, 2015, we were in compliance with all covenants in the Loan Agreement.
	The Loan Agreement contains customary events of default including, among other things, payment defaults, breaches of covenants or representations and warranties, cross-defaults with certain other indebtedness, bankruptcy and insolvency events, judgment defaults and change in control events, subject to grace periods in certain instances. Upon an event of default, the lender may declare all or a portion of the outstanding obligations payable by us to be immediately due and payable and exercise other rights and remedies provided for under the Loan Agreement. Under certain circumstances, a default interest rate will apply on all obligations during the existence of an event of default under the Loan Agreement at a per annum rate of interest equal to 2.00% above the otherwise applicable interest rate.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments And Contingencies [Abstract]
Commitments And Contingencies	Note 14 – Commitments and contingencies
	We offer a one-year limited warranty on most hardware products, with an optional two or three-year warranty on our hardware products, which is included in the sales price of our products. Provision is made for estimated future warranty costs at the time of the sale for the estimated costs that may be incurred under the standard limited warranty. Our estimate is based on historical experience and product sales during the period.
	The warranty reserve for the three month periods ended March 31, 2015 and 2014 was as follows:
			Three Months Ended March 31,
	(In thousands)		(Unaudited)
			2015		2014
	Balance at the beginning of the period	$	1,885	$	1,764
	Accruals for warranties issued during the period		1,369		744
	Settlements made (in cash or in kind) during the period		-1,541		-643
	Balance at the end of the period	$	1,713	$	1,865
	As of March 31, 2015, we had non-cancelable purchase commitments with various suppliers of customized inventory and inventory components totaling approximately $8 million over the next twelve months.
	As of March 31, 2015, we had outstanding guarantees for payment of customs and foreign grants totaling approximately $11 million, which are generally payable over the next twelve months.

Recently_Issued_Accounting_Pro

Recently Issued Accounting Pronouncements	3 Months Ended
	Mar. 31, 2015
Recently Issued Accounting Pronouncements [Abstract]
Recently Issued Accounting Pronouncements	Note 15 – Recently issued accounting pronouncements
	In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers. The update is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. As currently issued, ASU 2014-09 is effective for annual reporting periods, and interim periods within that period, beginning after December 15, 2016 (fiscal year 2017 for the Company) and early adoption is not permitted. Companies may use either a full retrospective or a modified retrospective approach to adopt ASU 2014-09. We are currently evaluating the effect that the adoption of this ASU will have on our financial statements.
	In August 2014, the FASB issued new guidance related to the disclosures around going concern in ASU 2014-15. The new standard provides guidance around management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on our financial statements.
	In April 2015, the FASB issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). The amendments in ASU 2015-03 require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. ASU 2015-03 is effective for annual and interim periods beginning on or after December 15, 2015. The adoption of this standard is not expected to have a material impact on our financial statements.

Litigation

Litigation	3 Months Ended
	Mar. 31, 2015
Litigation [Abstract]
Litigation	Note 16 – Litigation
	We are not currently a party to any material litigation. However, in the ordinary course of our business, we are involved in a limited number of legal actions, both as plaintiff and defendant, and could incur uninsured liability in any one or more of them. We also periodically receive notifications from various third parties related to alleged infringement of patents or intellectual property rights, commercial disputes or other matters. No assurances can be given with respect to the extent or outcome of any future litigation or dispute.

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2015
Acquisitions [Abstract]
Acquisitions	Note 17 – Acquisitions
	During the first quarter of 2015, we acquired BEECube, a technology innovator and leading supplier of high-performance FPGA prototyping and deployment products for advanced wireless research, wireless infrastructure and military/defense applications and we acquired a PXI modular instruments hardware product line from Cobham plc. As of March 31, 2015 we have not finalized our valuation of acquired identified intangibles and therefore our purchase price allocations remain preliminary. Our consolidated financial statements include the operating results from the dates of acquisition. Pro-forma results of operations have not been presented because the effects of the acquired operations were not material.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Note 18 – Subsequent events
	On April 22, 2015, our Board of Directors declared a quarterly cash dividend of $0.19 per common share, payable on June 1, 2015, to stockholders of record on May 11, 2015.
	We have evaluated subsequent events through the date the financial statements were issued.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Reconciliation Of The Denominators Used To Calculate Basic EPS And Diluted EPS
		Three Months Ended March 31,
		(In thousands)
		(Unaudited)
		2015	2014
	Weighted average shares outstanding-basic	128,040	125,973
	Plus: Common share equivalents
	Stock options and RSUs	636	752
	Weighted average shares outstanding-diluted	128,676	126,725

Cash_Cash_Equivalents_And_Shor1

Cash, Cash Equivalents And Short-Term Investments (Tables)	3 Months Ended
	Mar. 31, 2015
Cash, Cash Equivalents And Short-Term Investments [Abstract]
Unrealized Gains And Losses Related To Short-Term Investments Designated As Available-For-Sale
			As of March 31, 2015
	(In thousands)		(Unaudited)
					Gross		Gross		Cumulative
			Adjusted Cost		Unrealized Gain		Unrealized Loss		Translation Adjustment		Fair Value
	Cash	$	134,865	$	-	$	-	$	-	$	134,865
	Money Market Accounts		104,683		-		-		-		104,683
	Corporate bonds		127,690		121		-42		-7,461		120,308
	U.S. treasuries and agencies		73,992		60		-1		-		74,051
	Foreign government bonds		8,863		-		-		-2,413		6,450
	Time deposits		2,912		-		-		-		2,912
	Cash, cash equivalents, and short-term investments	$	453,005	$	181	$	-43	$	-9,874	$	443,269
	(In thousands)		31-Dec-14
					Gross		Gross		Cumulative
			Adjusted Cost		Unrealized Gain		Unrealized Loss		Translation Adjustment		Fair Value
	Cash	$	149,598	$	-	$	-	$	-	$	149,598
	Money Market Accounts		124,432		-		-		-		124,432
	Corporate bonds		118,242		54		-254		-4,966		113,076
	U.S. treasuries and agencies		73,919		1		-8		-		73,912
	Foreign government bonds		8,841		8		-		-1,586		7,263
	Time deposits		2,912		-		-		-		2,912
	Cash, cash equivalents, and short-term investments	$	477,944	$	63	$	-262	$	-6,552	$	471,193
Contractual Maturities Of Short-Term Investments Designated As Available-For-Sale
			As of March 31, 2015
	(In thousands)		(Unaudited)
			Adjusted Cost		Fair Value
	Due in less than 1 year	$	59,835	$	57,464
	Due in 1 to 5 years		153,622		146,257
	Total available-for-sale debt securities	$	213,457	$	203,721
	Due in less than 1 year		Adjusted Cost		Fair Value
	Corporate bonds	$	43,412	$	43,455
	U.S. treasuries and agencies		4,648		4,647
	Foreign government bonds		8,863		6,450
	Time deposits		2,912		2,912
	Total available-for-sale debt securities	$	59,835	$	57,464
	Due in 1 to 5 years		Adjusted Cost		Fair Value
	Corporate bonds	$	84,278	$	76,853
	U.S. treasuries and agencies		69,344		69,404
	Total available-for-sale debt securities	$	153,622	$	146,257

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements [Abstract]
Assets And Liabilities Measured On Recurring Basis
			Fair Value Measurements at Reporting Date Using
	(In thousands)		(Unaudited)
	Description		31-Mar-15		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	Assets
	Cash and cash equivalents available for sale:
	Money Market Funds	$	104,683	$	104,683	$	-	$	-
	Short-term investments available for sale:
	Corporate bonds		120,308		-		120,308		-
	U.S. treasuries and agencies		74,051		-		74,051		-
	Foreign government bonds		6,450		-		6,450		-
	Time deposits		2,912		2,912		-		-
	Derivatives		21,087		-		21,087		-
	Total Assets	$	329,491	$	107,595	$	221,896	$	-
	Liabilities
	Derivatives	$	-7,979	$	-	$	-7,979	$	-
	Total Liabilities	$	-7,979	$	-	$	-7,979	$	-
	(In thousands)		Fair Value Measurements at Reporting Date Using
	Description		31-Dec-14		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	Assets
	Cash and cash equivalents available for sale:
	Money Market Funds	$	124,432	$	124,432	$	-	$	-
	Short-term investments available for sale:
	Corporate bonds		113,076		-		113,076		-
	U.S. treasuries and agencies		73,912		-		73,912		-
	Foreign government bonds		7,263		-		7,263		-
	Time deposits		2,912		2,912		-		-
	Derivatives		16,151		-		16,151		-
	Total Assets	$	337,746	$	127,344	$	210,402	$	-
	Liabilities
	Derivatives	$	-4,253	$	-	$	-4,253	$	-
	Total Liabilities	$	-4,253	$	-	$	-4,253	$	-

Derivative_Instruments_And_Hed1

Derivative Instruments And Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2015
Derivative Instruments And Hedging Activities [Abstract]
Summary Of Notional Amounts Of Derivative Instruments
	(In thousands)		US Dollar Equivalent
			As of March 31, 2015		As of December 31,
			(Unaudited)		2014
	Euro	$	78,912	$	97,198
	Japanese yen		5,296		7,798
	Hungarian forint		58,417		61,067
	British pound		17,199		22,809
	Malaysian ringgit		17,681		10,241
	Total forward contracts notional amount	$	177,505	$	199,113
Fair Values Of Derivative Instruments On Consolidated Balance Sheets
		Asset Derivatives
		31-Mar-15			31-Dec-14
	(In thousands)	(Unaudited)
		Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
	Derivatives designated as hedging instruments
	Foreign exchange contracts - ST forwards	Prepaid expenses and other current assets	$	19,695	Prepaid expenses and other current assets	$	14,492
	Foreign exchange contracts - LT forwards	Other long-term assets		-	Other long-term assets		-
	Total derivatives designated as hedging instruments		$	19,695		$	14,492
	Derivatives not designated as hedging instruments
	Foreign exchange contracts - ST forwards	Prepaid expenses and other current assets	$	1,392	Prepaid expenses and other current assets	$	1,659
	Total derivatives not designated as hedging instruments		$	1,392		$	1,659
	Total derivatives		$	21,087		$	16,151
		Liability Derivatives
		31-Mar-15			31-Dec-14
	(In thousands)	(Unaudited)
		Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
	Derivatives designated as hedging instruments
	Foreign exchange contracts - ST forwards	Accrued expenses and other liabilities	$	-3,398	Accrued expenses and other liabilities	$	-1,937
	Foreign exchange contracts - LT forwards	Other long-term liabilities		-4,188	Other long-term liabilities		-1,536
	Total derivatives designated as hedging instruments		$	-7,586		$	-3,473
	Derivatives not designated as hedging instruments
	Foreign exchange contracts - ST forwards	Accrued expenses and other liabilities	$	-393	Accrued expenses and other liabilities	$	-780
	Total derivatives not designated as hedging instruments		$	-393		$	-780
	Total derivatives		$	-7,979		$	-4,253
Effect Of Derivative Instruments On Consolidated Statements Of Income	The following tables present the effect of derivative instruments on our Consolidated Statements of Income for three month periods ended March 31, 2015 and 2014, respectively:
	31-Mar-15
	(In thousands)
	(Unaudited)
	Derivatives in Cash Flow Hedging Relationship		Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)		Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
	Foreign exchange contracts - forwards and options	$	5,203	Net sales	$	5,081	Net foreign exchange gain (loss)	$	-
	Foreign exchange contracts - forwards and options		-2,217	Cost of sales		-333	Net foreign exchange gain (loss)		-
	Foreign exchange contracts - forwards and options		-2,004	Operating expenses		-364	Net foreign exchange gain (loss)		-
	Total	$	982		$	4,384		$	-
	31-Mar-14
	(In thousands)
	(Unaudited)
	Derivatives in Cash Flow Hedging Relationship		Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)		Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
	Foreign exchange contracts - forwards and options	$	-1,035	Net sales	$	346	Net foreign exchange gain (loss)	$	-
	Foreign exchange contracts - forwards and options		-597	Cost of sales		81	Net foreign exchange gain (loss)		-
	Foreign exchange contracts - forwards and options		-241	Operating expenses		18	Net foreign exchange gain (loss)		-
	Total	$	-1,873		$	445		$	-
	(In thousands)
	Derivatives not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income		Amount of Gain (Loss) Recognized in Income		Amount of Gain (Loss) Recognized in Income
				31-Mar-15		31-Mar-14
				(Unaudited)		(Unaudited)
	Foreign exchange contracts - forwards	Net foreign exchange gain/(loss)	$	1,945	$	-68
	Total		$	1,945	$	-68

Inventories_Net_Tables

Inventories, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Inventories, Net [Abstract]
Summary Of Inventories
			31-Mar-15		December 31,
	(In thousands)		(Unaudited)		2014
	Raw materials	$	89,397	$	79,376
	Work-in-process		6,831		6,675
	Finished goods		81,752		87,001
		$	177,980	$	173,052

Intangible_Assets_Net_Tables

Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Intangible Assets, Net [Abstract]
Schedule Of Finite-Lived Intangible Assets
			31-Mar-15
	(In thousands)		(Unaudited)						31-Dec-14
			Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	Capitalized software development costs	$	59,889	$	-26,700	$	33,189	$	58,343	$	-22,853	$	35,490
	Acquired technology		90,834		-67,961		22,873		88,216		-65,663		22,553
	Patents		28,195		-13,328		14,867		27,791		-12,859		14,932
	Other		27,767		-23,275		4,492		28,380		-23,073		5,307
		$	206,685	$	-131,264	$	75,421	$	202,730	$	-124,448	$	78,282

Goodwill_Tables

Goodwill (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill [Abstract]
Schedule Of Goodwill
			Amount
			(In thousands)
	Balance as of December 31, 2014	$	144,325
	Acquisitions		24,429
	Foreign currency translation impact		-1,780
	Balance as of March 31, 2015 (unaudited)	$	166,974

Comprehensive_Income_Tables

Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2015
Comprehensive Income [Abstract]
Schedule Of Comprehensive Income
			31-Mar-15
			(Unaudited)
	(In thousands)		Currency translation adjustment		Investments		Derivative instruments		Accumulated other comprehensive income/(loss)
	Balance as of December 31, 2014	$	-17,304	$	-1,399	$	7,039	$	-11,664
	Current-period other comprehensive (loss) income		-14,951		506		5,366		-9,079
	Reclassified from accumulated OCI into income		-		-		-4,384		-4,384
	Income tax (benefit) expense		-3,412		115		382		-2,915
	Balance as of March 31, 2015	$	-28,843	$	-1,008	$	7,639	$	-22,212
			31-Mar-14
			(Unaudited)
	(In thousands)		Currency translation adjustment		Investments		Derivative instruments		Accumulated other comprehensive income/(loss)
	Balance as of December 31, 2013	$	1,311	$	-1,066	$	2,305	$	2,550
	Current-period other comprehensive (loss) income		-1,139		192		-1,428		-2,375
	Reclassified from accumulated OCI into income		-		-		-445		-445
	Income tax (benefit) expense		-255		62		-581		-774
	Balance as of March 31, 2014	$	427	$	-936	$	1,013	$	504

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Information [Abstract]
Net Sales By Major Geographical Areas
			Three Months Ended March 31,
	(In thousands)		(Unaudited)
			2015		2014
	Net sales:
	Americas	$	118,388	$	115,106
	Europe		80,916		83,857
	East Asia		64,530		61,348
	Emerging Markets		25,679		24,363
		$	289,513	$	284,674

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments And Contingencies [Abstract]
Schedule Of Warranty Reserve
			Three Months Ended March 31,
	(In thousands)		(Unaudited)
			2015		2014
	Balance at the beginning of the period	$	1,885	$	1,764
	Accruals for warranties issued during the period		1,369		744
	Settlements made (in cash or in kind) during the period		-1,541		-643
	Balance at the end of the period	$	1,713	$	1,865

Earnings_Per_Share_Reconciliat

Earnings Per Share (Reconciliation Of The Denominators Used To Calculate Basic EPS And Diluted EPS) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Weighted average shares outstanding-basic	128,040,000	125,973,000
Plus: Common share equivalents Stock options, restricted stock units	636,000	752,000
Weighted average shares outstanding-diluted	128,676,000	126,725,000
Anti-dilutive securities excluded from the computation of diluted EPS	46,400	61,500

Cash_Cash_Equivalents_And_Shor2

Cash, Cash Equivalents And Short-Term Investments (Unrealized Gains And Losses Related To Short-Term Investments Designated As Available-For-Sale) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	$453,005	$477,944
Gross Unrealized Gain	181	63
Gross Unrealized Loss	-43	-262
Cumulative Translation Adjustment	-9,874	-6,552
Fair Value	443,269	471,193
Cash [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	134,865	149,598
Fair Value	134,865	149,598
Money Market Accounts [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	104,683	124,432
Fair Value	104,683	124,432
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	127,690	118,242
Gross Unrealized Gain	121	54
Gross Unrealized Loss	-42	-254
Cumulative Translation Adjustment	-7,461	-4,966
Fair Value	120,308	113,076
U.S. Treasuries And Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	73,992	73,919
Gross Unrealized Gain	60	1
Gross Unrealized Loss	-1	-8
Fair Value	74,051	73,912
Foreign Government Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	8,863	8,841
Gross Unrealized Gain		8
Cumulative Translation Adjustment	-2,413	-1,586
Fair Value	6,450	7,263
Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	2,912	2,912
Fair Value	$2,912	$2,912

Cash_Cash_Equivalents_And_Shor3

Cash, Cash Equivalents And Short-Term Investments (Contractual Maturities Of Short-Term Investments Designated As Available-For-Sale) (Details) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost, Due in less than 1 year	$59,835
Fair Value, Due in less than 1 year	57,464
Adjusted Cost, Due in 1 to 5 years	153,622
Fair Value, Due in 1 to 5 years	146,257
Adjusted Cost, Total	213,457
Fair Value, Total	203,721
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost, Due in less than 1 year	43,412
Fair Value, Due in less than 1 year	43,455
Adjusted Cost, Due in 1 to 5 years	84,278
Fair Value, Due in 1 to 5 years	76,853
U.S. Treasuries And Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost, Due in less than 1 year	4,648
Fair Value, Due in less than 1 year	4,647
Adjusted Cost, Due in 1 to 5 years	69,344
Fair Value, Due in 1 to 5 years	69,404
Foreign Government Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost, Due in less than 1 year	8,863
Fair Value, Due in less than 1 year	6,450
Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost, Due in less than 1 year	2,912
Fair Value, Due in less than 1 year	$2,912

Fair_Value_Measurements_Assets

Fair Value Measurements (Assets And Liabilities Measured On Recurring Basis) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
	item	item
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	$443,269	$471,193
Derivatives	21,087	16,151
Total Assets	329,491	337,746
Derivatives	-7,979	-4,253
Total Liabilities	-7,979	-4,253
Contractual maturities of short-term investments	40 months
Maximum remaining maturity period of sovereign debt	2 months
Number of items measured at fair value on a nonrecurring basis	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	107,595	127,344
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	21,087	16,151
Total Assets	221,896	210,402
Derivatives	-7,979	-4,253
Total Liabilities	-7,979	-4,253
Money Market Accounts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	104,683	124,432
Money Market Accounts [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	104,683	124,432
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	120,308	113,076
Corporate Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	120,308	113,076
U.S. Treasuries And Agencies Available For Sale Securities Portion [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	74,051	73,912
U.S. Treasuries And Agencies Available For Sale Securities Portion [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	74,051	73,912
Foreign Government Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	6,450	7,263
Foreign Government Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	6,450	7,263
Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Total	2,912	2,912
Time deposits	2,912	2,912
Time Deposits [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Time deposits	$2,912	$2,912

Derivative_Instruments_And_Hed2

Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	country
Derivative [Line Items]
Minimum number of countries for which entity has operations	50
Percentage of sales outside of the Americas during the period	59.00%	60.00%
Period of protection against the reduction in value caused by a fluctuation, minimum (in number of years)	1 year
Period of protection against the reduction in value caused by a fluctuation, maximum (in number of years)	3 years
Duration of derivative contracts entered into by the entity to hedge risk of loss	36 months		36 months
Foreign currency forward contracts notional amount	$177,505,000		$199,113,000
Cost Of Sales [Member]
Derivative [Line Items]
Gains (losses) expected to be reclassified from AOCI to earnings	-1,900,000
Forward Contracts [Member] | Net Sales [Member]
Derivative [Line Items]
Gains (losses) expected to be reclassified from AOCI to earnings	12,000,000
Forward Contracts [Member] | Operating Expense [Member]
Derivative [Line Items]
Gains (losses) expected to be reclassified from AOCI to earnings	-1,500,000
Other Derivatives [Member]
Derivative [Line Items]
Foreign currency forward contracts notional amount	$77,000,000		$78,000,000
Maximum [Member] | Forward Contracts [Member]
Derivative [Line Items]
Percentage of derivative risk hedged	100.00%
Duration of derivative contracts entered into by the entity to hedge risk of loss	40 months
Maximum [Member] | Other Derivatives [Member]
Derivative [Line Items]
Percentage of derivative risk hedged	90.00%
Duration of derivative contracts entered into by the entity to hedge risk of loss	120 days

Derivative_Instruments_And_Hed3

Derivative Instruments And Hedging Activities (Summary Of Notional Amounts Of Derivative Instruments) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Derivative [Line Items]
Total forward contracts notional amount	$177,505	$199,113
Euro [Member]
Derivative [Line Items]
Total forward contracts notional amount	78,912	97,198
Japanese Yen [Member]
Derivative [Line Items]
Total forward contracts notional amount	5,296	7,798
Hungarian Forint [Member]
Derivative [Line Items]
Total forward contracts notional amount	58,417	61,067
British Pound [Member]
Derivative [Line Items]
Total forward contracts notional amount	17,199	22,809
Malaysian Ringgit [Member]
Derivative [Line Items]
Total forward contracts notional amount	$17,681	$10,241

Derivative_Instruments_And_Hed4

Derivative Instruments And Hedging Activities (Fair Values Of Derivative Instruments On Consolidated Balance Sheets) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]
Derivative assets	$21,087	$16,151
Derivative liabilities	-7,979	-4,253
Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	19,695	14,492
Derivative liabilities	-7,586	-3,473
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	19,695	14,492
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Accrued Expenses And Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	-3,398	-1,937
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Long-Term [Member] | Other Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	-4,188	-1,536
Derivatives Not Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1,392	1,659
Derivative liabilities	-393	-780
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1,392	1,659
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Accrued Expenses And Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	($393)	($780)

Derivative_Instruments_And_Hed5

Derivative Instruments And Hedging Activities (Effect Of Derivative Instruments On Consolidated Statements Of Income) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	$982	($1,873)
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	4,384	445
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
Cash Flow Hedging [Member] | Foreign Exchange Contracts - Forwards And Options [Member] | Net Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	5,203	-1,035
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	5,081	346
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
Cash Flow Hedging [Member] | Foreign Exchange Contracts - Forwards And Options [Member] | Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	-2,217	-597
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	-333	81
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
Cash Flow Hedging [Member] | Foreign Exchange Contracts - Forwards And Options [Member] | Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	-2,004	-241
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	-364	18
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
Derivatives Not Designated As Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	1,945	-68
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Forwards And Options [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$1,945	($68)

Inventories_Net_Summary_Of_Inv

Inventories, Net (Summary Of Inventories) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Inventories, Net [Abstract]
Raw materials	$89,397	$79,376
Work-in-process	6,831	6,675
Finished goods	81,752	87,001
Inventories, net	$177,980	$173,052

Intangible_Assets_Net_Narrativ

Intangible Assets, Net (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Total intangible assets amortization expenses	$8,800,000	$7,600,000
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Capitalized software development costs	2,300,000	8,000,000
Capitalized computer software amortization	4,600,000	3,100,000
Costs related to stock based compensation	$95,000	$378,000
Useful life (in years)	3 years
Minimum [Member] | Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	3 years
Minimum [Member] | Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	10 years
Maximum [Member] | Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	8 years
Maximum [Member] | Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	17 years

Intangible_Assets_Net_Schedule

Intangible Assets, Net (Schedule Of Finite-Lived Intangible Assets) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$206,685	$202,730
Accumulated Amortization	-131,264	-124,448
Net Carrying Amount	75,421	78,282
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	59,889	58,343
Accumulated Amortization	-26,700	-22,853
Net Carrying Amount	33,189	35,490
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	90,834	88,216
Accumulated Amortization	-67,961	-65,663
Net Carrying Amount	22,873	22,553
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,195	27,791
Accumulated Amortization	-13,328	-12,859
Net Carrying Amount	14,867	14,932
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	27,767	28,380
Accumulated Amortization	-23,275	-23,073
Net Carrying Amount	$4,492	$5,307

Goodwill_Schedule_Of_Goodwill_

Goodwill (Schedule Of Goodwill) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
	segment
Goodwill [Abstract]
Balance at beginning of period	$144,325,000
Acquisitions	24,429,000
Foreign currency translation impact	-1,780,000
Balance at end of period	166,974,000	144,325,000
Number of operating segments	1
Goodwill impairment	$0	$0

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Income Taxes [Abstract]
Unrecognized tax benefits	$11,200,000		$11,100,000
Gross increase (decrease) in unrecognized tax benefits	52,000
Accrual for interest related to uncertain tax positions	948,000
Effective tax rate		23.00%
U.S. federal statutory rate	35.00%
Hungary statutory tax rate	19.00%
Tax benefits recognized due to differences in Hungary statutory rates from the statutory U.S. tax rate	901,000	1,600,000
Tax benefits resulting from the partial release of the valuation allowance on assets from the restructuring and the enhanced tax deduction for research expenses in Hungary	1,800,000	2,500,000
Foreign income tax benefit	$447,000	$306,000

Comprehensive_Income_Accumulat

Comprehensive Income (Accumulated Other Comprehensive Income) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	($11,664)	$2,550
Current-period other comprehensive (loss) income	-9,079	-2,375
Reclassified from accumulated OCI into income	-4,384	-445
Income tax (benefit) expense	-2,915	-774
Ending Balance	-22,212	504
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	-17,304	1,311
Current-period other comprehensive (loss) income	-14,951	-1,139
Income tax (benefit) expense	-3,412	-255
Ending Balance	-28,843	427
Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	-1,399	-1,066
Current-period other comprehensive (loss) income	506	192
Income tax (benefit) expense	115	62
Ending Balance	-1,008	-936
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	7,039	2,305
Current-period other comprehensive (loss) income	5,366	-1,428
Reclassified from accumulated OCI into income	-4,384	-445
Income tax (benefit) expense	382	-581
Ending Balance	$7,639	$1,013

Authorized_Shares_Of_Common_An1

Authorized Shares Of Common And Preferred Stock And Stock-Based Compensation Plans (Narrative) (Details) (USD $)	0 Months Ended		3 Months Ended	12 Months Ended
	14-May-13	10-May-11	Mar. 31, 2015	Dec. 31, 2004	Dec. 31, 1997	Dec. 31, 2014	11-May-10	Jan. 21, 2004	9-May-94	10-May-05
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional number of shares reserved for issuance	180,000,000
Common stock, shares authorized	360,000,000		360,000,000			360,000,000
Number of shares reserved for issuance							3,362,304
Common and preferred stock shares authorized			365,000,000
Preferred stock, par value			$0.01			$0.01
Common stock, par value			$0.01			$0.01
Preferred stock, shares authorized			5,000,000			5,000,000
Preferred stock, shares issued			0			0
Preferred stock, shares outstanding			0			0
Authorized common stock available for repurchase			3,932,245
Outstanding options			6,652
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price, Exercisable			$14.99
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional number of shares reserved for issuance		3,000,000
Percentage of the lower of the market related to purchase of common stock			85.00%
Shares of common stock reserved for future employee purchases			2,982,400
Shares issued during the period, in shares			276,633
Weighted average grant date fair value, in dollar per share			$25.57
Employee Stock Purchase Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum employee subscription rate			15.00%
Authorized Preferred Stock And Preferred Stock Purchase Rights Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance								750,000
Incentive Plan (1994) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional number of shares reserved for issuance				1,125,000	10,631,250
Number of shares reserved for issuance									13,668,750
Incentive Plan (1994) [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, (in years)			5 years
Incentive Plan (1994) [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, (in years)			10 years
Incentive Plan (2005) [Member] | Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance										4,050,000
Award vesting period, (in years)			5 years
Incentive Plan (2005) [Member] | Restricted Stock Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, (in years)			3 years
Incentive Plan (2005) [Member] | Restricted Stock Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, (in years)			10 years
Incentive Plan (2010) [Member] | Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance							3,000,000
Award vesting period, (in years)			5 years
Number of shares available for grant			3,205,101
Incentive Plan (2010) [Member] | Restricted Stock Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, (in years)			3 years
Incentive Plan (2010) [Member] | Restricted Stock Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, (in years)			10 years

Segment_Information_Narrative_

Segment Information (Narrative) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	region
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of geographic regions where products are sold	4
Total sales	$289,513	$284,674
Property and equipment, net	263,322		264,086
Outside The United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total sales	179,000	178,000
Property and equipment, net	$145,000		$145,000

Segment_Information_Net_Sales_

Segment Information (Net Sales By Major Geographical Areas) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$289,513	$284,674
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	118,388	115,106
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	80,916	83,857
East Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	64,530	61,348
Emerging Markets [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$25,679	$24,363

Debt_Narrative_Details

Debt (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Line of Credit Facility [Line Items]
Unsecured revolving line of credit	$50
Available for borrowings under revolving line of credit	$50
Ratio of consolidated indebtedness to earnings before interest, taxes, depreciation and amortization, maximum allowed	3.25
Ratio of consolidated earnings before interest, taxes, depreciation and amortization expense, minimum allowed	3
Minimum [Member]
Line of Credit Facility [Line Items]
Quarterly commitment fee	0.18%
Maximum [Member]
Line of Credit Facility [Line Items]
Quarterly commitment fee	0.30%
Base Rate Determined In Accordance With Loan Agreement [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	0.00%
Base Rate Determined In Accordance With Loan Agreement [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	0.50%
London Interbank Offered Rate [Member | Minimum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	1.13%
London Interbank Offered Rate [Member | Maximum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	2.00%
During Event Of Default [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	2.00%

Commitments_And_Contingencies_1

Commitments And Contingencies (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Commitments And Contingencies [Abstract]
Limited warranty on most hardware products (in number of years)	1 year
Warranty on a subset of our hardware products, minimum (in number of years)	2 years
Warranty on a subset of our hardware products, maximum (in number of years)	3 years
Amount of non-cancelable purchase commitments with various suppliers of customized inventory and inventory components	$8
Amount of guarantees for payment of customs and foreign grants	$11

Commitments_And_Contingencies_2

Commitments And Contingencies (Schedule Of Warranty Reserve) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Commitments And Contingencies [Abstract]
Balance at the beginning of the period	$1,885	$1,764
Accruals for warranties issued during the period	1,369	744
Settlements made (in cash or in kind) during the period	-1,541	-643
Balance at the end of the period	$1,713	$1,865

Subsequent_Events_Details

Subsequent Events (Details) (Subsequent Event [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividend payable, date declared	22-Apr-15
Dividend payable, amount per share	$0.19
Dividend payable, date payable	1-Jun-15
Dividend payable, date of record	11-May-15