$NTCT
NETSCOUT SYSTEMS INC Stock $ntct

$ntct Overview Financials Valuation SEC Filings Company Website

2017 Q1 Form 10-K Financial Statement

#000162828018007035 Filed on May 22, 2018

Income Statement

Concept	2017 Q1	2016 Q4	2016 Q3
Revenue	$318.9M	$302.2M	$272.0M
YoY Change	11.55%	-1.78%	4.19%
Cost Of Revenue	$92.90M	$81.68M	$84.51M
YoY Change	-7.93%	-23.03%	-15.65%
Gross Profit	$226.0M	$220.5M	$187.5M
YoY Change	22.14%	9.4%	16.54%
Gross Profit Margin	70.87%	72.97%	68.94%
Selling, General & Admin	$114.5M	$111.8M	$108.2M
YoY Change	-4.5%	-8.67%	-10.15%
% of Gross Profit	50.66%	50.68%	57.71%
Research & Development	$53.00M	$58.08M	$61.05M
YoY Change	-11.07%	-10.82%	-7.36%
% of Gross Profit	23.45%	26.34%	32.55%
Depreciation & Amortization	$40.00M	$40.30M	$40.40M
YoY Change	-5.66%	-12.2%	-13.68%
% of Gross Profit	17.7%	18.28%	21.54%
Operating Expenses	$185.0M	$187.2M	$186.7M
YoY Change	-2.58%	-6.1%	-4.82%
Operating Profit	$41.00M	$33.36M	$805.0K
YoY Change	-942.99%	1380.78%	-102.28%
Interest Expense	-$2.100M	$2.260M	$2.193M
YoY Change	0.0%	9.18%	22.79%
% of Operating Profit	-5.12%	6.77%	272.42%
Other Income/Expense, Net	$200.0K	-$2.748M	-$2.430M
YoY Change	-122.22%	-5.34%	193.48%
Pretax Income	$36.90M	$30.61M	-$1.625M
YoY Change	-567.09%	-4809.85%	-95.5%
Income Tax	$14.50M	$9.369M	-$359.0K
% Of Pretax Income	39.3%	30.6%
Net Earnings	$22.31M	$21.25M	-$1.266M
YoY Change	-716.98%	-186.69%	-84.01%
Net Earnings / Revenue	7.0%	7.03%	-0.47%
Basic Earnings Per Share		$0.23	-$0.01
Diluted Earnings Per Share	$0.24	$0.23	-$0.01
COMMON SHARES
Basic Shares Outstanding	91.79M shares	91.76M shares	91.92M shares
Diluted Shares Outstanding		92.40M shares	91.92M shares

Balance Sheet

Concept	2017 Q1	2016 Q4	2016 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$442.8M	$359.7M	$294.7M
YoY Change	30.74%	0.39%	-7.53%
Cash & Equivalents	$304.9M	$244.8M	$195.4M
Short-Term Investments	$137.9M	$114.9M	$99.30M
Other Short-Term Assets	$37.00M	$28.80M	$42.50M
YoY Change	-52.81%	-41.7%	-58.33%
Inventory	$40.00M	$54.15M	$52.86M
Prepaid Expenses
Receivables	$294.4M	$284.1M	$240.6M
Other Receivables	$40.30M	$18.90M	$34.40M
Total Short-Term Assets	$854.5M	$745.6M	$665.1M
YoY Change	15.39%	-1.09%	-4.66%
LONG-TERM ASSETS
Property, Plant & Equipment	$61.39M	$61.90M	$64.00M
YoY Change	-1.03%	5.52%	5.97%
Goodwill	$1.718B	$1.721B	$1.715B
YoY Change	0.51%	1.6%	0.7%
Intangibles	$931.3M	$959.0M	$998.2M
YoY Change	-11.65%	-12.82%	-9.48%
Long-Term Investments	$21.90M	$17.20M	$8.700M
YoY Change	63.43%	-4.44%	-73.39%
Other Assets	$7.710M	$5.723M	$6.078M
YoY Change	4.81%	-26.39%	-19.9%
Total Long-Term Assets	$2.747B	$2.767B	$2.795B
YoY Change	-3.69%	-3.96%	-3.85%
TOTAL ASSETS
Total Short-Term Assets	$854.5M	$745.6M	$665.1M
Total Long-Term Assets	$2.747B	$2.767B	$2.795B
Total Assets	$3.602B	$3.513B	$3.460B
YoY Change	0.24%	-3.36%	-4.0%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$37.41M	$41.66M	$45.85M
YoY Change	-14.92%	-20.89%	22.52%
Accrued Expenses	$106.9M	$111.8M	$94.50M
YoY Change	-6.39%	-9.98%	-6.53%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$460.2M	$453.0M	$422.6M
YoY Change	0.69%	4.59%	12.92%
LONG-TERM LIABILITIES
Long-Term Debt	$300.0M	$300.0M	$300.0M
YoY Change	0.0%	20.0%	20.0%
Other Long-Term Liabilities	$3.976M	$3.098M	$3.224M
YoY Change	36.96%	35.22%	-40.79%
Total Long-Term Liabilities	$304.0M	$303.1M	$303.2M
YoY Change	0.35%	20.14%	18.7%
TOTAL LIABILITIES
Total Short-Term Liabilities	$460.2M	$453.0M	$422.6M
Total Long-Term Liabilities	$304.0M	$303.1M	$303.2M
Total Liabilities	$1.165B	$1.115B	$1.086B
YoY Change	1.37%	0.83%	5.37%
SHAREHOLDERS EQUITY
Retained Earnings	$316.7M	$294.4M	$273.1M
YoY Change	11.75%	2.57%	-12.32%
Common Stock	$116.0K	$116.0K	$115.0K
YoY Change	1.75%	1.75%	0.88%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$570.9M	$569.5M	$564.6M
YoY Change	18.6%	49.11%	59.26%
Treasury Stock Shares	23.88M shares	23.83M shares	23.66M shares
Shareholders Equity	$2.436B	$2.398B	$2.374B
YoY Change
Total Liabilities & Shareholders Equity	$3.602B	$3.513B	$3.460B
YoY Change	0.24%	-3.36%	-4.0%

Cashflow Statement

Concept	2017 Q1	2016 Q4	2016 Q3
OPERATING ACTIVITIES
Net Income	$22.31M	$21.25M	-$1.266M
YoY Change	-716.98%	-186.69%	-84.01%
Depreciation, Depletion And Amortization	$40.00M	$40.30M	$40.40M
YoY Change	-5.66%	-12.2%	-13.68%
Cash From Operating Activities	$94.90M	$79.70M	$14.50M
YoY Change	145.22%	60.36%	-704.17%
INVESTING ACTIVITIES
Capital Expenditures	-$8.000M	-$6.100M	-$8.500M
YoY Change	-47.02%	1.67%	46.55%
Acquisitions
YoY Change
Other Investing Activities	-$27.00M	-$17.00M	$12.10M
YoY Change	-651.02%	1207.69%	-81.44%
Cash From Investing Activities	-$35.00M	-$23.10M	$3.600M
YoY Change	243.14%	212.16%	-93.95%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-400.0K	-6.000M	-33.10M
YoY Change	-99.19%	-78.02%	-151.32%
NET CHANGE
Cash From Operating Activities	94.90M	79.70M	14.50M
Cash From Investing Activities	-35.00M	-23.10M	3.600M
Cash From Financing Activities	-400.0K	-6.000M	-33.10M
Net Change In Cash	59.50M	50.60M	-15.00M
YoY Change	-386.06%	237.33%	-112.34%
FREE CASH FLOW
Cash From Operating Activities	$94.90M	$79.70M	$14.50M
Capital Expenditures	-$8.000M	-$6.100M	-$8.500M
Free Cash Flow	$102.9M	$85.80M	$23.00M
YoY Change	91.26%	54.04%	576.47%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017Q3	dei	Entity Public Float EntityPublicFloat	2722835641	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	NETSCOUT SYSTEMS INC
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2018	dei	Trading Symbol TradingSymbol	NTCT
CY2016	ntct	Acquisition Related Compensation Expense And Accretion Charges AcquisitionRelatedCompensationExpenseAndAccretionCharges	6728000	USD
CY2017	ntct	Acquisition Related Compensation Expense And Accretion Charges AcquisitionRelatedCompensationExpenseAndAccretionCharges	153000	USD
CY2018	ntct	Acquisition Related Compensation Expense And Accretion Charges AcquisitionRelatedCompensationExpenseAndAccretionCharges	153000	USD
CY2016	ntct	Amortizationof Acquired Intangible Assets AmortizationofAcquiredIntangibleAssets	32373000	USD
CY2017	ntct	Amortizationof Acquired Intangible Assets AmortizationofAcquiredIntangibleAssets	70141000	USD
CY2018	ntct	Amortizationof Acquired Intangible Assets AmortizationofAcquiredIntangibleAssets	76640000	USD
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--03-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-03-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0001078075
CY2018Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	80274022	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2016	ntct	Business Combination Contingent Consideration Includedin Accrued Other BusinessCombinationContingentConsiderationIncludedinAccruedOther	0	USD
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017	ntct	Business Combination Contingent Consideration Includedin Accrued Other BusinessCombinationContingentConsiderationIncludedinAccruedOther	660000	USD
CY2018	ntct	Business Combination Contingent Consideration Includedin Accrued Other BusinessCombinationContingentConsiderationIncludedinAccruedOther	523000	USD
CY2017Q1	ntct	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	8695000	USD
CY2018Q1	ntct	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	4187000	USD
CY2018	ntct	Defined Benefit Plan Amounts Recognizedin Other Comprehensive Income Loss Net Actuarial Gain Loss Netof Tax DefinedBenefitPlanAmountsRecognizedinOtherComprehensiveIncomeLossNetActuarialGainLossNetofTax	1400000	USD
CY2016	ntct	Effective Income Tax Rate Reconciliation Foreign Withholding Percent EffectiveIncomeTaxRateReconciliationForeignWithholdingPercent	-0.061
CY2017	ntct	Effective Income Tax Rate Reconciliation Foreign Withholding Percent EffectiveIncomeTaxRateReconciliationForeignWithholdingPercent	0.038
CY2018	ntct	Effective Income Tax Rate Reconciliation Foreign Withholding Percent EffectiveIncomeTaxRateReconciliationForeignWithholdingPercent	-0.210
CY2016	ntct	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCosts	-0.191
CY2017	ntct	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCosts	0.000
CY2018	ntct	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCosts	0.000
CY2016	ntct	Increase Decrease Contingent Consideration Asset IncreaseDecreaseContingentConsiderationAsset	-9306000	USD
CY2017	ntct	Increase Decrease Contingent Consideration Asset IncreaseDecreaseContingentConsiderationAsset	-12864000	USD
CY2018	ntct	Increase Decrease Contingent Consideration Asset IncreaseDecreaseContingentConsiderationAsset	0	USD
CY2016	ntct	Increase Decreasein Duefrom Related Parties Investing Activities IncreaseDecreaseinDuefromRelatedPartiesInvestingActivities	9306000	USD
CY2017	ntct	Increase Decreasein Duefrom Related Parties Investing Activities IncreaseDecreaseinDuefromRelatedPartiesInvestingActivities	12864000	USD
CY2018	ntct	Increase Decreasein Duefrom Related Parties Investing Activities IncreaseDecreaseinDuefromRelatedPartiesInvestingActivities	0	USD
CY2017Q1	ntct	Inventory Finished Goods Grossand Deferred Costs InventoryFinishedGoodsGrossandDeferredCosts	16699000	USD
CY2018Q1	ntct	Inventory Finished Goods Grossand Deferred Costs InventoryFinishedGoodsGrossandDeferredCosts	11325000	USD
CY2016	ntct	Payments Of Contingent Consideration PaymentsOfContingentConsideration	0	USD
CY2017	ntct	Payments Of Contingent Consideration PaymentsOfContingentConsideration	0	USD
CY2018	ntct	Payments Of Contingent Consideration PaymentsOfContingentConsideration	660000	USD
CY2017	ntct	Restructuring And Related Cost Number Of Restructuring Plans RestructuringAndRelatedCostNumberOfRestructuringPlans	2	plan
CY2017	ntct	Restructuring Charges And Other Adjustments RestructuringChargesAndOtherAdjustments	4306000	USD
CY2018	ntct	Restructuring Charges And Other Adjustments RestructuringChargesAndOtherAdjustments	6022000	USD
CY2018Q1	ntct	Stock Repurchase Program Shares Repurchased As Percentage Of Total Expected To Be Repurchased StockRepurchaseProgramSharesRepurchasedAsPercentageOfTotalExpectedToBeRepurchased	0.70
CY2018Q1	ntct	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	-4000000	USD
CY2018	ntct	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	-87000000	USD
CY2018	ntct	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit	2000000	USD
CY2016	ntct	Transfers From Inventory To Fixed Assets TransfersFromInventoryToFixedAssets	1229000	USD
CY2017	ntct	Transfers From Inventory To Fixed Assets TransfersFromInventoryToFixedAssets	4928000	USD
CY2018	ntct	Transfers From Inventory To Fixed Assets TransfersFromInventoryToFixedAssets	5556000	USD
CY2018Q1	ntct	Treasury Stock Shares Acquired From Each Of Dealers TreasuryStockSharesAcquiredFromEachOfDealers	3693931	shares
CY2017Q1	ntct	Unrecognized Accounts Receivable And Deferred Revenue UnrecognizedAccountsReceivableAndDeferredRevenue	17900000	USD
CY2018Q1	ntct	Unrecognized Accounts Receivable And Deferred Revenue UnrecognizedAccountsReceivableAndDeferredRevenue	20000000	USD
CY2017Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	37407000	USD
CY2018Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	30133000	USD
CY2017Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	294374000	USD
CY2018Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	213438000	USD
CY2017Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	5057000	USD
CY2018Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1526000	USD
CY2017Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	124802000	USD
CY2018Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	152000000	USD
CY2017Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3472000	USD
CY2018Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2895000	USD
CY2018	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P14Y7M2D
CY2017Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2693846000	USD
CY2018Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2665120000	USD
CY2016	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	1926000	USD
CY2017	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	-1045000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	26609000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	36449000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	43425000	USD
CY2016	us-gaap	Advertising Expense AdvertisingExpense	6400000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	8100000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	6500000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	28351000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	39189000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	47317000	USD
CY2017Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2066000	USD
CY2018Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1991000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	84421000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	126089000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	116956000	USD
CY2017Q1	us-gaap	Assets Assets	3601513000	USD
CY2018Q1	us-gaap	Assets Assets	3368608000	USD
CY2017Q1	us-gaap	Assets Current AssetsCurrent	854466000	USD
CY2018Q1	us-gaap	Assets Current AssetsCurrent	752408000	USD
CY2017Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	464815000	USD
CY2018Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	447884000	USD
CY2017Q1	us-gaap	Available For Sale Securities AvailableForSaleSecurities	159825000	USD
CY2018Q1	us-gaap	Available For Sale Securities AvailableForSaleSecurities	77941000	USD
CY2017Q1	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	43000	USD
CY2018Q1	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	62000	USD
CY2017Q1	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	159868000	USD
CY2018Q1	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	78003000	USD
CY2017Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	21933000	USD
CY2018Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	USD
CY2017Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	137892000	USD
CY2018Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	77941000	USD
CY2017Q1	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	5449000	USD
CY2018Q1	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	5464000	USD
CY2017Q1	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4789000	USD
CY2018Q1	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	0	USD
CY2016	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-1065000	USD
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CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	594000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	1000000	USD
CY2017Q1	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	1400000	USD
CY2018Q1	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	100000	USD
CY2015Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	104893000	USD
CY2016Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	210711000	USD
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CY2016Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	210897000	USD
CY2017Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	305726000	USD
CY2018Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	370731000	USD
CY2016	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	105818000	USD
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CY2017Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2018Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2017Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2018Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2017Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	115917431	shares
CY2018Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	117744913	shares
CY2017Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	92041288	shares
CY2018Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	80270023	shares
CY2017Q1	us-gaap	Common Stock Value CommonStockValue	116000	USD
CY2018Q1	us-gaap	Common Stock Value CommonStockValue	117000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-25225000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	31320000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	86179000	USD
CY2016	us-gaap	Cost Of Goods Sold CostOfGoodsSold	238037000	USD
CY2017	us-gaap	Cost Of Goods Sold CostOfGoodsSold	238002000	USD
CY2018	us-gaap	Cost Of Goods Sold CostOfGoodsSold	164526000	USD
CY2016	us-gaap	Cost Of Revenue CostOfRevenue	328449000	USD
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	346139000	USD
CY2018	us-gaap	Cost Of Revenue CostOfRevenue	271905000	USD
CY2016	us-gaap	Cost Of Services CostOfServices	90412000	USD
CY2017	us-gaap	Cost Of Services CostOfServices	108137000	USD
CY2018	us-gaap	Cost Of Services CostOfServices	107379000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	29238000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15912000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	14191000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6628000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	11175000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	12249000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	38089000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	30239000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	28365000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2223000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3152000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1925000	USD
CY2017Q1	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	32117000	USD
CY2018Q1	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	35246000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-30216000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-8278000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-113122000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-7482000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-6645000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3677000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-42121000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-11008000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-127784000	USD
CY2016	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	-42159000	USD
CY2017	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	-11345000	USD
CY2018	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	-126836000	USD
CY2017Q1	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	310594000	USD
CY2018Q1	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	301925000	USD
CY2017Q1	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	86595000	USD
CY2018Q1	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	91409000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-4461000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3578000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-10037000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	8427000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	12168000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	64058000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	58376000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	60684000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	55268000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	6580000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	6685000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	27322000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	21251000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	33000000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	67000000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	66000000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	288000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	418000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	5502000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	6625000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	4978000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	5307000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6418000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5164000	USD
CY2017	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	231000	USD
CY2017Q1	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	323008000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	4883000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	4068000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	6240000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	3375000	USD
CY2017Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3374000	USD
CY2018Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3108000	USD
CY2017Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	271019000	USD
CY2018Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	144878000	USD
CY2018Q1	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	195959000	USD
CY2017Q1	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	277599000	USD
CY2018Q1	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	151563000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1226000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	1788000	USD
CY2018	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	1800000	USD
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0230
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0210
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0230
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0225
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0225
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0225
CY2016Q1	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	29188000	USD
CY2017Q1	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	30141000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	33464000	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	231000	USD
CY2018	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	288000	USD
CY2017	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	231000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	288000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	4546000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	380000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	627000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	556000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	502000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	442000	USD
CY2016Q1	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2017Q1	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2018Q1	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2017	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-1009000	USD
CY2018	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	4274000	USD
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	391000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	638000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	718000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	670000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	967000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1125000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	288000	USD
CY2016	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	279000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	329000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	407000	USD
CY2016	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	7800000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	9400000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	8000000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.5
CY2018	us-gaap	Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage	0.25
CY2018	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.06
CY2016	us-gaap	Depreciation Depreciation	26600000	USD
CY2017	us-gaap	Depreciation Depreciation	33000000	USD
CY2018	us-gaap	Depreciation Depreciation	34700000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	140071000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	160863000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	153503000	USD
CY2017Q1	us-gaap	Derivative Assets DerivativeAssets	110000	USD
CY2018Q1	us-gaap	Derivative Assets DerivativeAssets	122000	USD
CY2017	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	358000	USD
CY2018	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-900000	USD
CY2017	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-109000	USD
CY2018	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-93000	USD
CY2017	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-444000	USD
CY2018	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	1079000	USD
CY2017Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	213000	USD
CY2018Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	40000	USD
CY2018	us-gaap	Derivative Remaining Maturity1 DerivativeRemainingMaturity1	P12M
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.35
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.36
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.35
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.10
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.01
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.23
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.24
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.36
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.27
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	744000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-761000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	6385000	USD
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.125
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.362
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	5.277
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3155
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	4.541
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.092
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.040
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.007
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.001
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.138
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.182
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.067
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.155
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	-0.035
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.025
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	-0.067
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.016
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.042
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.058
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.031
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.097
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.069
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.130
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.082
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.395
CY2017Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	77607000	USD
CY2018Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	46552000	USD
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	-9066000	USD
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	-9559000	USD
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	-13598000	USD
CY2017Q1	us-gaap	Fifo Inventory Amount FIFOInventoryAmount	40002000	USD
CY2018Q1	us-gaap	Fifo Inventory Amount FIFOInventoryAmount	34774000	USD
CY2017Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	257893000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	379452000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	354117000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	130108000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	62045000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	69778000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	80232000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	116494000	USD
CY2017Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1170562000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1192226000	USD
CY2017Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	912669000	USD
CY2018Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	812774000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-1500000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2500000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-4100000	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-134000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-271000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-481000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	117714000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	118438000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	109479000	USD
CY2016Q1	us-gaap	Goodwill Goodwill	1709369000	USD
CY2017Q1	us-gaap	Goodwill Goodwill	1718162000	USD
CY2018Q1	us-gaap	Goodwill Goodwill	1712764000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1950000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	6077000	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	3051000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-11475000	USD
CY2017	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	3792000	USD
CY2016	us-gaap	Gross Profit GrossProfit	626970000	USD
CY2016Q2	us-gaap	Gross Profit GrossProfit	181918000	USD
CY2016Q3	us-gaap	Gross Profit GrossProfit	187538000	USD
CY2016Q4	us-gaap	Gross Profit GrossProfit	220514000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	226003000	USD
CY2017	us-gaap	Gross Profit GrossProfit	815973000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	159194000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	182620000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	204435000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	168633000	USD
CY2018	us-gaap	Gross Profit GrossProfit	714882000	USD
CY2016	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-32439000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	52185000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-18659000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-6979000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	32475000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-35032000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-25460000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	19710000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	16373000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-32439000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	52185000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-18659000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4070000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18894000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-98471000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	50658000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	49290000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	18216000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2334000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	23259000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	405000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-8929000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	48080000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-84952000	USD
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3910000	USD
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1963000	USD
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-2734000	USD
CY2016	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	25645000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	33075000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-8138000	USD
CY2016	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	18483000	USD
CY2017	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	-25055000	USD
CY2018	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	-443000	USD
CY2016	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-6743000	USD
CY2017	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-2792000	USD
CY2018	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-75000	USD
CY2016	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	33250000	USD
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	6785000	USD
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-17718000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-5523000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-12456000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1006000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	29481000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	24751000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-20147000	USD
CY2017Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	931300000	USD
CY2017Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	931269000	USD
CY2018Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	831374000	USD
CY2018Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	831400000	USD
CY2016	us-gaap	Interest Expense InterestExpense	6329000	USD
CY2017	us-gaap	Interest Expense InterestExpense	9184000	USD
CY2018	us-gaap	Interest Expense InterestExpense	12633000	USD
CY2016	us-gaap	Interest Paid InterestPaid	3807000	USD
CY2017	us-gaap	Interest Paid InterestPaid	6442000	USD
CY2018	us-gaap	Interest Paid InterestPaid	9604000	USD
CY2017Q1	us-gaap	Inventory Net InventoryNet	40002000	USD
CY2018Q1	us-gaap	Inventory Net InventoryNet	34774000	USD
CY2017Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	22305000	USD
CY2018Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	20860000	USD
CY2017Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	998000	USD
CY2018Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	2589000	USD
CY2016	us-gaap	Investment Income Interest InvestmentIncomeInterest	691000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	1021000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	1808000	USD
CY2017Q1	us-gaap	Liabilities Liabilities	1165263000	USD
CY2018Q1	us-gaap	Liabilities Liabilities	1299826000	USD
CY2017Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3601513000	USD
CY2018Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3368608000	USD
CY2017Q1	us-gaap	Liabilities Current LiabilitiesCurrent	460187000	USD
CY2018Q1	us-gaap	Liabilities Current LiabilitiesCurrent	413300000	USD
CY2017Q1	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	5662000	USD
CY2018Q1	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	5504000	USD
CY2017Q1	us-gaap	Long Term Debt LongTermDebt	300000000	USD
CY2018Q1	us-gaap	Long Term Debt LongTermDebt	600000000	USD
CY2016Q1	us-gaap	Loss Contingency Patents Allegedly Infringed Number LossContingencyPatentsAllegedlyInfringedNumber	5	patent
CY2017Q1	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	137892000	USD
CY2018Q1	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	77941000	USD
CY2017Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	21933000	USD
CY2018Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	0	USD
CY2018	us-gaap	Maximum Length Of Time Hedged In Cash Flow Hedge1 MaximumLengthOfTimeHedgedInCashFlowHedge1	P12M
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-17226000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-89553000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-220962000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	25089000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-41621000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	57128000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	97211000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	226764000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	222454000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-28369000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	-8998000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	-1266000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	21245000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	22310000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	33291000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	-24222000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	-2468000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	89685000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	16817000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	79812000	USD
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-6889000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-9879000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-14601000	USD
	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	3	company
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	Segment
CY2018	us-gaap	Number Of Reporting Units NumberOfReportingUnits	2	reporting_unit
CY2016	us-gaap	Operating Expenses OperatingExpenses	652520000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	753909000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	718940000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	-25550000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	62064000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-4058000	USD
CY2018Q1	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	99617000	USD
CY2018Q1	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	16613000	USD
CY2018Q1	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	9330000	USD
CY2018Q1	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	10538000	USD
CY2018Q1	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	11404000	USD
CY2018Q1	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	13930000	USD
CY2018Q1	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	37802000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	12800000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	13800000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	16600000	USD
CY2017Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	29522000	USD
CY2018Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	33164000	USD
CY2017Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7710000	USD
CY2018Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	12866000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-59000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-6000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1063000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-54000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	131000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1446000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	4889000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3144000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1971000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6367000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-632000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	858000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1353000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-215000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	368000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-435000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1586000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-223000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	681000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-915000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-135000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	219000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-523000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-277000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	812000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-329000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-167000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	267000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	3000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-59000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-6000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-15000	USD
CY2017Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3976000	USD
CY2018Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	8308000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	279000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	111000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-18000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1251000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1716000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3776000	USD
CY2016	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	5377000	USD
CY2017	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2018	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2016	us-gaap	Payments For Proceeds From Other Deposits PaymentsForProceedsFromOtherDeposits	150000	USD
CY2017	us-gaap	Payments For Proceeds From Other Deposits PaymentsForProceedsFromOtherDeposits	-129000	USD
CY2018	us-gaap	Payments For Proceeds From Other Deposits PaymentsForProceedsFromOtherDeposits	330000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	302784000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	79996000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	501324000	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	2328000	USD
CY2018	us-gaap	Payments For Restructuring PaymentsForRestructuring	3572000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-27700000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	4606000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	8334000	USD
CY2016	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	3962000	USD
CY2017	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	1031000	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	544000	USD
CY2016	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	100278000	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	199841000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	114178000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	24783000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	29696000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	15913000	USD
CY2016	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	1625000	USD
CY2017	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	1421000	USD
CY2018	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	137000	USD
CY2017Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2018Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2017Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q1	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q1	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q1	us-gaap	Prepaid Taxes PrepaidTaxes	22932000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	294623000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	294619000	USD
CY2017Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	36972000	USD
CY2018Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	33502000	USD
CY2017Q1	us-gaap	Prepaid Taxes PrepaidTaxes	40346000	USD
CY2016	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	1000	USD
CY2017	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	2000	USD
CY2018	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	1000	USD
CY2016	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	118881000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	181321000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	196041000	USD
CY2017Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	186195000	USD
CY2018Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	204511000	USD
CY2017Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	61393000	USD
CY2018Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	52511000	USD
CY2018Q1	us-gaap	Purchase Obligation PurchaseObligation	39900000	USD
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	208630000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	232701000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	215076000	USD
CY2015Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	186000	USD
CY2016Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	186000	USD
CY2017Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	846000	USD
CY2018Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	910000	USD
CY2016	us-gaap	Restructuring Charges RestructuringCharges	468000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	4001000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	5209000	USD
CY2016Q1	us-gaap	Restructuring Reserve RestructuringReserve	272000	USD
CY2017Q1	us-gaap	Restructuring Reserve RestructuringReserve	1955000	USD
CY2018Q1	us-gaap	Restructuring Reserve RestructuringReserve	3696000	USD
CY2017	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-295000	USD
CY2018	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-709000	USD
CY2017Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	316681000	USD
CY2018Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	396493000	USD
CY2016	us-gaap	Revenues Revenues	955419000	USD
CY2016Q2	us-gaap	Revenues Revenues	268952000	USD
CY2016Q3	us-gaap	Revenues Revenues	272048000	USD
CY2016Q4	us-gaap	Revenues Revenues	302192000	USD
CY2017Q1	us-gaap	Revenues Revenues	318920000	USD
CY2017	us-gaap	Revenues Revenues	1162112000	USD
CY2017Q2	us-gaap	Revenues Revenues	225756000	USD
CY2017Q3	us-gaap	Revenues Revenues	256863000	USD
CY2017Q4	us-gaap	Revenues Revenues	268944000	USD
CY2018Q1	us-gaap	Revenues Revenues	235224000	USD
CY2018	us-gaap	Revenues Revenues	986787000	USD
CY2016	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	633408000	USD
CY2017	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	735531000	USD
CY2018	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	546127000	USD
CY2016	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	322011000	USD
CY2017	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	426581000	USD
CY2018	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	440660000	USD
CY2016	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	293335000	USD
CY2017	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	328628000	USD
CY2018	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	312536000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	28351000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	39189000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	47317000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	126329	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	333382	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	277526	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	34.99
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	33.40
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	31.70
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1806490	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	2020536	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1962590	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	37.20
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	24.92
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	34.01
CY2015Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1929315	shares
CY2016Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2873306	shares
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3610301	shares
CY2018Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4078780	shares
CY2015Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	30.18
CY2016Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	35.32
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	30.24
CY2018Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	31.77
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	736170	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	950159	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1216585	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	26.52
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	33.16
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	31.09
CY2016	us-gaap	Stock Issued1 StockIssued1	10560000	USD
CY2017	us-gaap	Stock Issued1 StockIssued1	15697000	USD
CY2018	us-gaap	Stock Issued1 StockIssued1	17849000	USD
CY2016	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	2305611000	USD
CY2016	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	10560000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	15697000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	17849000	USD
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1000	USD
CY2015Q1	us-gaap	Stockholders Equity StockholdersEquity	435750000	USD
CY2016Q1	us-gaap	Stockholders Equity StockholdersEquity	2443382000	USD
CY2017Q1	us-gaap	Stockholders Equity StockholdersEquity	2436250000	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	2068782000	USD
CY2018Q1	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	8000000	USD
CY2016Q1	us-gaap	Tenant Improvements TenantImprovements	0	USD
CY2017Q1	us-gaap	Tenant Improvements TenantImprovements	0	USD
CY2018Q1	us-gaap	Tenant Improvements TenantImprovements	2104000	USD
CY2017Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	23876143	shares
CY2018Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	37474890	shares
CY2018Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	7387862	shares
CY2017Q1	us-gaap	Treasury Stock Value TreasuryStockValue	570921000	USD
CY2018Q1	us-gaap	Treasury Stock Value TreasuryStockValue	995843000	USD
CY2016	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	311850000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	89555000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	514922000	USD
CY2015Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1038000	USD
CY2016Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1588000	USD
CY2017Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2926000	USD
CY2018Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2215000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	154000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	481000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	356000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	48000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	46000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	126000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	502000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1446000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81927000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92920000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	88261000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81927000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92226000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	87425000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	0	shares
CY2017	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	694000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	836000	shares
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Concentration of Credit Risk</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of investments, trade accounts receivable and accounts payable. NetScout's cash, cash equivalents, and marketable securities are placed with financial institutions with high credit standings.</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">At </font><font style="font-family:inherit;font-size:10pt;">March 31, 2018</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">2017</font><font style="font-family:inherit;font-size:10pt;"> respectively, the Company had </font><font style="font-family:inherit;font-size:10pt;">no</font><font style="font-family:inherit;font-size:10pt;"> direct customers or indirect channel partners which accounted for more than </font><font style="font-family:inherit;font-size:10pt;">10%</font><font style="font-family:inherit;font-size:10pt;"> of the accounts receivable balance.</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">During the fiscal year ended </font><font style="font-family:inherit;font-size:10pt;">March 31, 2018</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">no</font><font style="font-family:inherit;font-size:10pt;"> direct customers or indirect channel partners accounted for more than </font><font style="font-family:inherit;font-size:10pt;">10%</font><font style="font-family:inherit;font-size:10pt;"> of total revenue. During the fiscal years ended March 31, </font><font style="font-family:inherit;font-size:10pt;">2017</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">2016</font><font style="font-family:inherit;font-size:10pt;">, one direct customer, Verizon, accounted for more than </font><font style="font-family:inherit;font-size:10pt;">10%</font><font style="font-family:inherit;font-size:10pt;"> of total revenue, while no indirect channel partner accounted for more than 10% of total revenue. </font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As disclosed parenthetically within the Company's consolidated balance sheet, the Company had a receivable from related parties in the amount of </font><font style="font-family:inherit;font-size:10pt;">$3.2 million</font><font style="font-family:inherit;font-size:10pt;"> that represents a concentration of credit risk at </font><font style="font-family:inherit;font-size:10pt;">March 31, 2018</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Historically, the Company has not experienced any significant failure of its customers to meet their payment obligations nor does the Company anticipate material non-performance by its customers in the future; accordingly, the Company does not require collateral from its customers. However, if the Company’s assumptions are incorrect, there could be an adverse impact on its allowance for doubtful accounts.</font></div></div>
CY2018	us-gaap	Fiscal Period FiscalPeriod	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Fiscal Year End</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">During fiscal years 2018 and 2017, the fiscal year end of NetScout and its wholly owned subsidiaries ended on March 31st.  During the fiscal year 2016, the fiscal year end of NetScout and its wholly owned subsidiaries ended on March 31st, except for Fluke Networks Enterprise business, which ended on April 1, 2016. During fiscal years 2018 and 2017, NetScout’s quarters ended on the last calendar day of the months of June, September and December. The fiscal year 2016 quarter end dates of the entities acquired as part of the acquisition of Danaher Corporation's (Danaher) Communications Business in July 2015 (Comms Transaction) were October 2nd and December 31st. The Company does not adjust for the difference in fiscal periods between the acquired entities and itself, as such difference would be fewer than 93 days, pursuant to Regulation S-X Rule 3A-02. References herein to Fiscal 2018, 2017 and 2016 refer to the fiscal years ended March 31, 2018, 2017, and 2016, respectively.</font></div></div>
CY2018	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">NATURE OF BUSINESS</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">NetScout Systems, Inc., or NetScout or the Company, has been a technology innovator for three-plus decades since its founding in 1984. The Company's solutions, based on patented Adaptive Service Intelligence (ASI) technology, help customers identify network and application performance issues, defend their networks from denial of service (DDoS) attacks, and rapidly find and isolate advanced network threats. As a result, customers can quickly resolve issues that cause business disruptions, downtime, poor service quality or compromised security, thereby driving compelling returns on their investments in their network and broader information technology (IT) initiatives. The Company reports revenue and income in </font><font style="font-family:inherit;font-size:10pt;">one</font><font style="font-family:inherit;font-size:10pt;"> reportable segment.</font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates in these financial statements include those involving revenue recognition, valuation of goodwill and acquired assets and liabilities, valuation of the pension obligation and share-based compensation. These items are continuously monitored and analyzed by management for changes in facts and circumstances and material changes in these estimates could occur in the future.</font></div></div>

Files In Submission

Name	View Source	Status
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$NTCT
NETSCOUT SYSTEMS INC Stock $ntct

2017 Q1 Form 10-K Financial Statement

#000162828018007035 Filed on May 22, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTCT NETSCOUT SYSTEMS INC Stock $ntct

2017 Q1 Form 10-K Financial Statement

#000162828018007035 Filed on May 22, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTCT
NETSCOUT SYSTEMS INC Stock $ntct