$MPWR
Monolithic Power Systems Inc Stock $mpwr

$mpwr Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000143774919003798 Filed on March 01, 2019

Income Statement

Concept	2018 Q4	2017 Q4	2017 Q3
Revenue	$153.5M	$129.4M	$128.9M
YoY Change	18.59%	24.91%	21.12%
Cost Of Revenue	$68.90M	$58.27M	$58.08M
YoY Change	18.25%	23.69%	19.68%
Gross Profit	$84.59M	$71.16M	$70.86M
YoY Change	18.88%	25.92%	22.32%
Gross Profit Margin	55.11%	54.98%	54.95%
Selling, General & Admin	$28.37M	$24.04M	$25.26M
YoY Change	18.03%	12.77%	12.76%
% of Gross Profit	33.54%	33.78%	35.64%
Research & Development	$22.74M	$21.73M	$21.44M
YoY Change	4.62%	20.9%	4.74%
% of Gross Profit	26.88%	30.54%	30.26%
Depreciation & Amortization	$3.200M	$4.000M	$4.000M
YoY Change	-20.0%	-4.76%	11.11%
% of Gross Profit	3.78%	5.62%	5.65%
Operating Expenses	$51.52M	$46.11M	$47.02M
YoY Change	11.73%	18.32%	9.55%
Operating Profit	$33.08M	$25.05M	$23.83M
YoY Change	32.03%	42.82%	58.87%
Interest Expense	$1.800M	$1.300M	$1.346M
YoY Change	38.46%	44.44%	130.09%
% of Operating Profit	5.44%	5.19%	5.65%
Other Income/Expense, Net	-$393.0K	$1.647M	$1.255M
YoY Change	-123.86%	83.61%	60.9%
Pretax Income	$32.68M	$26.70M	$25.09M
YoY Change	22.41%	44.8%	58.97%
Income Tax	$5.046M	$14.63M	$1.445M
% Of Pretax Income	15.44%	54.79%	5.76%
Net Earnings	$27.64M	$12.07M	$23.64M
YoY Change	128.96%	-27.16%	64.49%
Net Earnings / Revenue	18.01%	9.33%	18.34%
Basic Earnings Per Share	$0.65	$0.29	$0.57
Diluted Earnings Per Share	$0.61	$0.27	$0.54
COMMON SHARES
Basic Shares Outstanding			41.46M
Diluted Shares Outstanding	45.06M	44.61M	43.49M

Balance Sheet

Concept	2018 Q4	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$377.3M	$299.1M	$299.6M
YoY Change	26.15%	11.52%	15.63%
Cash & Equivalents	$172.7M	$82.76M	$104.4M
Short-Term Investments	$204.6M	$216.3M	$195.2M
Other Short-Term Assets	$11.93M	$12.76M	$13.56M
YoY Change	-6.51%	41.13%	264.52%
Inventory	$136.4M	$99.28M	$99.89M
Prepaid Expenses	$3.425M
Receivables	$55.20M	$38.04M	$50.76M
Other Receivables	$6.200M	$1.400M	$1.200M
Total Short-Term Assets	$580.8M	$449.2M	$463.8M
YoY Change	29.31%	17.28%	26.44%
LONG-TERM ASSETS
Property, Plant & Equipment	$150.0M	$144.6M	$100.6M
YoY Change	3.71%	69.82%	22.57%
Goodwill	$6.571M	$6.571M	$6.571M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$111.0K	$951.0K	$1.464M
YoY Change	-88.33%	-68.32%	-58.35%
Long-Term Investments	$3.200M	$5.300M	$5.400M
YoY Change	-39.62%	-1.85%	0.0%
Other Assets	$35.98M	$30.07M	$26.52M
YoY Change	19.66%	9.69%	-11.12%
Total Long-Term Assets	$212.6M	$203.4M	$141.2M
YoY Change	4.53%	58.73%	15.73%
TOTAL ASSETS
Total Short-Term Assets	$580.8M	$449.2M	$463.8M
Total Long-Term Assets	$212.6M	$203.4M	$141.2M
Total Assets	$793.4M	$652.6M	$605.0M
YoY Change	21.59%	27.67%	22.26%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$22.68M	$22.81M	$21.83M
YoY Change	-0.59%	30.91%	25.96%
Accrued Expenses	$38.96M	$27.51M	$26.88M
YoY Change	41.64%	20.03%	22.89%
Deferred Revenue	$2.520M	$4.742M
YoY Change	-46.86%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$80.44M	$65.92M	$66.17M
YoY Change	22.03%	24.56%	19.19%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$38.53M	$33.02M	$28.70M
YoY Change	16.66%	42.23%	47.55%
Total Long-Term Liabilities	$38.53M	$33.02M	$28.70M
YoY Change	16.66%	42.23%	47.55%
TOTAL LIABILITIES
Total Short-Term Liabilities	$80.44M	$65.92M	$66.17M
Total Long-Term Liabilities	$38.53M	$33.02M	$28.70M
Total Liabilities	$153.3M	$130.6M	$99.49M
YoY Change	17.45%	63.18%	26.65%
SHAREHOLDERS EQUITY
Retained Earnings	$194.7M	$143.6M	$140.5M
YoY Change	35.6%	20.31%	25.93%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$640.1M	$522.0M	$505.5M
YoY Change
Total Liabilities & Shareholders Equity	$793.4M	$652.6M	$605.0M
YoY Change	21.59%	27.67%	22.26%

Cashflow Statement

Concept	2018 Q4	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	$27.64M	$12.07M	$23.64M
YoY Change	128.96%	-27.16%	64.49%
Depreciation, Depletion And Amortization	$3.200M	$4.000M	$4.000M
YoY Change	-20.0%	-4.76%	11.11%
Cash From Operating Activities	$47.60M	$53.40M	$33.60M
YoY Change	-10.86%	72.26%	2.13%
INVESTING ACTIVITIES
Capital Expenditures	-$4.400M	-$40.70M	-$4.600M
YoY Change	-89.19%	402.47%	-55.34%
Acquisitions
YoY Change
Other Investing Activities	$11.50M	-$25.60M	$10.50M
YoY Change	-144.92%	156.0%	-5.41%
Cash From Investing Activities	$7.100M	-$66.30M	$5.900M
YoY Change	-110.71%	268.33%	742.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-12.90M	-8.600M	-7.100M
YoY Change	50.0%	7.5%	14.52%
NET CHANGE
Cash From Operating Activities	47.60M	53.40M	33.60M
Cash From Investing Activities	7.100M	-66.30M	5.900M
Cash From Financing Activities	-12.90M	-8.600M	-7.100M
Net Change In Cash	41.80M	-21.50M	32.40M
YoY Change	-294.42%	-530.0%	18.25%
FREE CASH FLOW
Cash From Operating Activities	$47.60M	$53.40M	$33.60M
Capital Expenditures	-$4.400M	-$40.70M	-$4.600M
Free Cash Flow	$52.00M	$94.10M	$38.20M
YoY Change	-44.74%	140.66%	-11.57%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2017Q4	mpwr	Cash Cash Equivalents And Investments CashCashEquivalentsAndInvestments	304346000
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	42916000
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018Q2	dei	Entity Public Float EntityPublicFloat	4500000000
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018Q4	mpwr	Accrued Dividend Equivalents AccruedDividendEquivalents	8400000
CY2017Q4	mpwr	Accrued Dividend Equivalents AccruedDividendEquivalents	5800000
CY2018Q4	mpwr	Accrued Sales Rebate AccruedSalesRebate	236000
CY2017Q4	mpwr	Accrued Sales Rebate AccruedSalesRebate	1036000
CY2018	mpwr	Amortization Of Premium On Available For Sale Investments AmortizationOfPremiumOnAvailableForSaleInvestments	1353000
CY2017	mpwr	Amortization Of Premium On Available For Sale Investments AmortizationOfPremiumOnAvailableForSaleInvestments	1976000
CY2016	mpwr	Amortization Of Premium On Available For Sale Investments AmortizationOfPremiumOnAvailableForSaleInvestments	1019000
CY2018	mpwr	Auction Rate Securities Maturities AuctionRateSecuritiesMaturities	P28Y
CY2018Q4	mpwr	Cash Cash Equivalents And Investments CashCashEquivalentsAndInvestments	380522000
CY2018	mpwr	Contributions Made To Deferred Compensation Plan ContributionsMadeToDeferredCompensationPlan	4146000
CY2017	mpwr	Contributions Made To Deferred Compensation Plan ContributionsMadeToDeferredCompensationPlan	5261000
CY2016	mpwr	Contributions Made To Deferred Compensation Plan ContributionsMadeToDeferredCompensationPlan	5046000
CY2018Q4	mpwr	Dividend Equivalents Noncurrent DividendEquivalentsNoncurrent	6145000
CY2017Q4	mpwr	Dividend Equivalents Noncurrent DividendEquivalentsNoncurrent	4881000
CY2018Q4	mpwr	Dividends And Dividend Equivalents DividendsAndDividendEquivalents	15044000
CY2017Q4	mpwr	Dividends And Dividend Equivalents DividendsAndDividendEquivalents	9248000
CY2018Q4	mpwr	Dividends And Dividend Equivalents Accrued DividendsAndDividendEquivalentsAccrued	16319000
CY2017Q4	mpwr	Dividends And Dividend Equivalents Accrued DividendsAndDividendEquivalentsAccrued	10686000
CY2016Q4	mpwr	Dividends And Dividend Equivalents Accrued DividendsAndDividendEquivalentsAccrued	10416000
CY2016	mpwr	Dividends And Dividend Equivalents Declared On Common Stock And Restricted Stock Units DividendsAndDividendEquivalentsDeclaredOnCommonStockAndRestrictedStockUnits	34645000
CY2017	mpwr	Dividends And Dividend Equivalents Declared On Common Stock And Restricted Stock Units DividendsAndDividendEquivalentsDeclaredOnCommonStockAndRestrictedStockUnits	35816000
CY2018	mpwr	Dividends And Dividend Equivalents Declared On Common Stock And Restricted Stock Units DividendsAndDividendEquivalentsDeclaredOnCommonStockAndRestrictedStockUnits	54527000
CY2018	mpwr	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncome	0.144
CY2017	mpwr	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncome
CY2016	mpwr	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncome
CY2018	mpwr	Effective Income Tax Rate Reconciliation Remeasurement Of Deferred Taxes EffectiveIncomeTaxRateReconciliationRemeasurementOfDeferredTaxes
CY2017	mpwr	Effective Income Tax Rate Reconciliation Remeasurement Of Deferred Taxes EffectiveIncomeTaxRateReconciliationRemeasurementOfDeferredTaxes	0.118
CY2016	mpwr	Effective Income Tax Rate Reconciliation Remeasurement Of Deferred Taxes EffectiveIncomeTaxRateReconciliationRemeasurementOfDeferredTaxes
CY2018	mpwr	Effective Income Tax Rate Reconciliation Repatriation Transition Tax EffectiveIncomeTaxRateReconciliationRepatriationTransitionTax	0.006
CY2017	mpwr	Effective Income Tax Rate Reconciliation Repatriation Transition Tax EffectiveIncomeTaxRateReconciliationRepatriationTransitionTax	0.505
CY2016	mpwr	Effective Income Tax Rate Reconciliation Repatriation Transition Tax EffectiveIncomeTaxRateReconciliationRepatriationTransitionTax
CY2018	mpwr	Gilti Income GILTIIncome	81100000
CY2018	mpwr	Gain Loss On Deferred Compensation Plan Investments GainLossOnDeferredCompensationPlanInvestments	-1022000
CY2017	mpwr	Gain Loss On Deferred Compensation Plan Investments GainLossOnDeferredCompensationPlanInvestments	2531000
CY2016	mpwr	Gain Loss On Deferred Compensation Plan Investments GainLossOnDeferredCompensationPlanInvestments	1257000
CY2018	mpwr	Gain Loss On Deferred Compensation Plan Investments Cash Flow GainLossOnDeferredCompensationPlanInvestmentsCashFlow	-255000
CY2017	mpwr	Gain Loss On Deferred Compensation Plan Investments Cash Flow GainLossOnDeferredCompensationPlanInvestmentsCashFlow	2531000
CY2016	mpwr	Gain Loss On Deferred Compensation Plan Investments Cash Flow GainLossOnDeferredCompensationPlanInvestmentsCashFlow	1257000
CY2018	mpwr	Income Taxes And Interest Paid IncomeTaxesAndInterestPaid	7134000
CY2017	mpwr	Income Taxes And Interest Paid IncomeTaxesAndInterestPaid	3619000
CY2016	mpwr	Income Taxes And Interest Paid IncomeTaxesAndInterestPaid	1234000
CY2018	mpwr	Lapse Period For Consignment LapsePeriodForConsignment	P60D
CY2018	mpwr	Litigation Expense Benefit Net LitigationExpenseBenefitNet	1922000
CY2017	mpwr	Litigation Expense Benefit Net LitigationExpenseBenefitNet	1243000
CY2016	mpwr	Litigation Expense Benefit Net LitigationExpenseBenefitNet	-229000
CY2018	mpwr	Other Interest And Other Income OtherInterestAndOtherIncome	95000
CY2017	mpwr	Other Interest And Other Income OtherInterestAndOtherIncome	162000
CY2016	mpwr	Other Interest And Other Income OtherInterestAndOtherIncome	26000
CY2018	mpwr	Payment For The Transition Tax PaymentForTheTransitionTax	2600000
CY2018	mpwr	Payments Of Dividends And Dividend Equivalents PaymentsOfDividendsAndDividendEquivalents	47475000
CY2017	mpwr	Payments Of Dividends And Dividend Equivalents PaymentsOfDividendsAndDividendEquivalents	33926000
CY2016	mpwr	Payments Of Dividends And Dividend Equivalents PaymentsOfDividendsAndDividendEquivalents	33099000
	mpwr	Percentage Of Auction Rate Securities Redeemedat Par Value PercentageOfAuctionRateSecuritiesRedeemedatParValue	0.92
CY2018Q4	mpwr	Product Return Assets Current ProductReturnAssetsCurrent	1602000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	1465000
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	60607000
CY2017Q4	mpwr	Product Return Assets Current ProductReturnAssetsCurrent
CY2018	mpwr	Property And Equipment Purchased On Extended Payment Terms PropertyAndEquipmentPurchasedOnExtendedPaymentTerms	749000
CY2017	mpwr	Property And Equipment Purchased On Extended Payment Terms PropertyAndEquipmentPurchasedOnExtendedPaymentTerms	250000
CY2016	mpwr	Property And Equipment Purchased On Extended Payment Terms PropertyAndEquipmentPurchasedOnExtendedPaymentTerms	300000
	mpwr	Redemption Auction Rate Securities To Date RedemptionAuctionRateSecuritiesToDate	39700000
CY2018Q4	mpwr	Refund Receivable RefundReceivable	4297000
CY2017Q4	mpwr	Refund Receivable RefundReceivable
CY2018	mpwr	Revenue Performance Obligation Performance Period Following Prepayment RevenuePerformanceObligationPerformancePeriodFollowingPrepayment	P90D
CY2018Q4	mpwr	Stock Rotation Reserve And Accrued Sales Returns StockRotationReserveAndAccruedSalesReturns	5363000
CY2017Q4	mpwr	Stock Rotation Reserve And Accrued Sales Returns StockRotationReserveAndAccruedSalesReturns	2647000
CY2017	mpwr	Transition Tax TransitionTax	41900000
CY2018	mpwr	Transition Tax Increase TransitionTaxIncrease	1300000
CY2017Q4	mpwr	Transition Tax Liability TransitionTaxLiability	23900000
CY2018Q4	mpwr	Transition Tax Liability TransitionTaxLiability	24600000
CY2018	mpwr	Transition Tax Liability Increase TransitionTaxLiabilityIncrease	700000
CY2018Q4	mpwr	Undistributed Foreign Earnings Deferred Tax UndistributedForeignEarningsDeferredTax	1100000
CY2018	mpwr	Undistributed Foreign Earnings Subject To Tax UndistributedForeignEarningsSubjectToTax	123200000
CY2017	mpwr	Utilization Of Rd Tax Credit UtilizationOfRDTaxCredit	18000000
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	22678000
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	22813000
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	55214000
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	38037000
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	7018000
CY2017Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2861000
CY2018Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	34375000
CY2017Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	31621000
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	38962000
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	27507000
CY2018Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	1369000
CY2017Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	938000
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	109547000
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	102613000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5543000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1813000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	44934000
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	52625000
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	60657000
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	52617000
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	197952000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	215844000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	3241000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	5256000
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	44989000
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	800000
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2100000
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2100000
CY2018Q4	us-gaap	Assets Assets	793432000
CY2017Q4	us-gaap	Assets Assets	652569000
CY2018Q4	us-gaap	Assets Current AssetsCurrent	580810000
CY2017Q4	us-gaap	Assets Current AssetsCurrent	449170000
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	267820000
CY2017Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	245846000
CY2018Q4	us-gaap	Auction Rate Securities Noncurrent AuctionRateSecuritiesNoncurrent	3241000
CY2017Q4	us-gaap	Auction Rate Securities Noncurrent AuctionRateSecuritiesNoncurrent	5256000
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	207818000
CY2017Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	221587000
CY2018Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	248953000
CY2017Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	229221000
CY2018Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	9000
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	17000
CY2018Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1856000
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1381000
CY2018Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	250800000
CY2017Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	230585000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	78732000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	126932000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	125845000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	89399000
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1737000
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3061000
CY2016	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	787000
CY2018Q4	us-gaap	Cash Cash	131569000
CY2017Q4	us-gaap	Cash Cash	75125000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	172704000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	82759000
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	89944000
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-29939000
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	21840000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	172818000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	82874000
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	112813000
CY2015Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	90973000
CY2018Q4	us-gaap	Certificates Of Deposit At Carrying Value CertificatesOfDepositAtCarryingValue	1600000
CY2017Q4	us-gaap	Certificates Of Deposit At Carrying Value CertificatesOfDepositAtCarryingValue
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.20
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.80
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.80
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	42505000
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	41614000
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	42505000
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	41614000
CY2018Q4	us-gaap	Common Stocks Including Additional Paid In Capital CommonStocksIncludingAdditionalPaidInCapital	450908000
CY2017Q4	us-gaap	Common Stocks Including Additional Paid In Capital CommonStocksIncludingAdditionalPaidInCapital	376586000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	97912000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	71231000
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	47039000
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><div style="display: inline; font-style: italic;"><div style="display: inline; font-weight: bold;">Certain Significant Risks and Uncertainties</div></div></div> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </div> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents, short-term and long-term investments and accounts receivable. The Company’s cash consists of checking and savings accounts. The Company’s cash equivalents include short-term, highly liquid investments purchased with remaining maturities at the date of purchase of <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">three</div> months or less. The Company’s short-term investments consist of corporate debt securities, certificates of deposit and government agency bonds and treasuries, and the long-term investments consist of government-backed student loan auction-rate securities. The Company generally does <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">not</div> require its customers to provide collateral or other security to support accounts receivable. To manage credit risk, management performs ongoing credit evaluations of its customers’ financial condition.  The Company requires cash in advance for certain customers in addition to ongoing credit evaluations. See Note <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">2</div> for further discussion.</div> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </div> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The Company participates in the dynamic high technology industry and believes that changes in any of the following areas could have a material adverse effect on its future financial position, results of operations or cash flows: advances and trends in new technologies and industry standards; competitive pressures in the form of new products or price reductions on current products; changes in product mix; changes in the overall demand for products offered by the Company; changes in <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">third</div>-party manufacturers; changes in key suppliers; changes in certain strategic relationships or customer relationships; litigation or claims against the Company based on intellectual property, patent, product, regulatory or other factors; fluctuations in foreign currency exchange rates; risk associated with changes in government policies and regulations on trade restrictions and corporate taxes; availability of necessary components or sub-assemblies; availability of foundry capacity; ability to integrate acquired companies; and the Company’s ability to attract and retain employees necessary to support its growth.</div></div></div></div></div></div></div></div></div></div></div>
CY2017Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	4742000
CY2018	us-gaap	Cost Of Revenue CostOfRevenue	259714000
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	2520000
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	212646000
CY2016	us-gaap	Cost Of Revenue CostOfRevenue	177792000
CY2018Q4	us-gaap	Cost Of Revenue CostOfRevenue	68904000
CY2018Q3	us-gaap	Cost Of Revenue CostOfRevenue	70957000
CY2018Q2	us-gaap	Cost Of Revenue CostOfRevenue	62197000
CY2018Q1	us-gaap	Cost Of Revenue CostOfRevenue	57655000
CY2017Q4	us-gaap	Cost Of Revenue CostOfRevenue	58269000
CY2017Q3	us-gaap	Cost Of Revenue CostOfRevenue	58083000
CY2017Q2	us-gaap	Cost Of Revenue CostOfRevenue	50773000
CY2017Q1	us-gaap	Cost Of Revenue CostOfRevenue	45520000
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
CY2018Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	379000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11023000
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	31025000
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2527000
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2992000
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1967000
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2013000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4000
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2000
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit
CY2018Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	32283000
CY2017Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	28087000
CY2018Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	32730000
CY2017Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	28443000
CY2018Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	31970000
CY2017Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	28080000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-797000
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-15426000
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-8000
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	173000
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	4000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-843000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-15238000
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5000
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1816000
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	0
CY2018Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent
CY2017Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	1845000
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	31687000
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	28485000
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	16830000
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	15917000
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	18646000
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	15917000
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	16830000
CY2017Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	15917000
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1133000
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1377000
CY2018Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment
CY2017Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	191000
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	33145000
CY2016	us-gaap	Dividends Common Stock DividendsCommonStock	32434000
CY2018Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	12800000
CY2017Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	8300000
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.49
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.58
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.30
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	11833000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	10331000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6829000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	5505000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	10040000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	9157000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	1852000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	1924000
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	13041000
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12568000
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	711000
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment
CY2018Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	1105000
CY2017Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0
CY2016	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0
CY2018	us-gaap	Depreciation Depreciation	11400000
CY2017	us-gaap	Depreciation Depreciation	14000000
CY2016	us-gaap	Depreciation Depreciation	12600000
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	12311000
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	16101000
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14674000
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	50803000
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.65
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.36
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.36
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.50
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.26
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.35
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2208000
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1625000
CY2016	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2093000
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.112
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.214
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.079
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	0.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.362
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.11
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.22
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.412
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.411
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.011
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.022
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.022
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.017
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.007
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.018
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	18799000
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	15597000
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4383000
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5054000
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1465000
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1465000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	7373000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6533000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	7484000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	7484000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	111000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	951000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	953000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-550000
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	65000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17741000
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4544000
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5046000
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4639000
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-22000
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	3000
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-57000
CY2018Q4	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-409000
CY2018Q3	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-343000
CY2018Q2	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-640000
CY2018Q1	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-531000
CY2017Q4	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-340000
CY2017Q3	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-327000
CY2017Q2	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-290000
CY2017Q1	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-286000
CY2018Q4	us-gaap	Goodwill Goodwill	6571000
CY2017Q4	us-gaap	Goodwill Goodwill	6571000
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2018	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0
CY2017	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0
CY2018	us-gaap	Gross Profit GrossProfit	322668000
CY2017	us-gaap	Gross Profit GrossProfit	258283000
CY2016	us-gaap	Gross Profit GrossProfit	210873000
CY2018Q4	us-gaap	Gross Profit GrossProfit	84593000
CY2018Q3	us-gaap	Gross Profit GrossProfit	89018000
CY2018Q2	us-gaap	Gross Profit GrossProfit	77564000
CY2018Q1	us-gaap	Gross Profit GrossProfit	71495000
CY2017Q4	us-gaap	Gross Profit GrossProfit	71161000
CY2017Q3	us-gaap	Gross Profit GrossProfit	70856000
CY2017Q2	us-gaap	Gross Profit GrossProfit	61425000
CY2017Q1	us-gaap	Gross Profit GrossProfit	54842000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-13151000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-19115000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-14431000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	118482000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	82944000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	57264000
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32684000
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	36207000
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	27114000
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	22477000
CY2017Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	26700000
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	25087000
CY2017Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	16207000
CY2017Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	14951000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	131633000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	102059000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	71695000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13214000
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2908000
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	621000
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	3421000
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	111000
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	951000
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	6321000
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	5353000
CY2016	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	2488000
CY2018Q4	us-gaap	Interest Receivable Current InterestReceivableCurrent	1441000
CY2017Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14629000
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1445000
CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1193000
CY2017Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	474000
CY2017	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	9800000
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	871000
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3077000
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5483000
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	6923000
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	29347000
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3165000
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	7092000
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	10852000
CY2016	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	8035000
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	3806000
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	2397000
CY2016	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	3136000
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	37060000
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	27795000
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	8323000
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1075000
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1603000
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11021000
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	18079000
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	3785000
CY2017Q4	us-gaap	Interest Receivable Current InterestReceivableCurrent	1352000
CY2018Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	54693000
CY2017Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	38678000
CY2018Q4	us-gaap	Inventory Net InventoryNet	136384000
CY2017Q4	us-gaap	Inventory Net InventoryNet	99281000
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-7082000
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6369000
CY2018Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	43017000
CY2017Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	20573000
CY2018Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	38674000
CY2017Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	40030000
CY2018Q4	us-gaap	Liabilities Liabilities	153339000
CY2017Q4	us-gaap	Liabilities Liabilities	130562000
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	793432000
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	652569000
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	80439000
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	65917000
CY2018Q4	us-gaap	Long Term Investments LongTermInvestments	3241000
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	5256000
CY2018Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	41135000
CY2017Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	7134000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-34559000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-31325000
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-28127000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14740000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-134060000
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-55726000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	141451000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	133821000
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	107786000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	105268000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	65203000
CY2016	us-gaap	Net Income Loss NetIncomeLoss	52720000
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	27638000
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	31568000
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	24206000
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	21856000
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	12071000
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	23642000
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	15014000
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	14477000
CY2018Q4	us-gaap	Noncurrent Assets NoncurrentAssets	188653000
CY2017Q4	us-gaap	Noncurrent Assets NoncurrentAssets	180238000
CY2016Q4	us-gaap	Noncurrent Assets NoncurrentAssets	115033000
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2018	us-gaap	Operating Expenses OperatingExpenses	209180000
CY2017	us-gaap	Operating Expenses OperatingExpenses	180859000
CY2016	us-gaap	Operating Expenses OperatingExpenses	156426000
CY2018Q4	us-gaap	Operating Expenses OperatingExpenses	51516000
CY2018Q3	us-gaap	Operating Expenses OperatingExpenses	55525000
CY2018Q2	us-gaap	Operating Expenses OperatingExpenses	52682000
CY2018Q1	us-gaap	Operating Expenses OperatingExpenses	49458000
CY2017Q4	us-gaap	Operating Expenses OperatingExpenses	46108000
CY2017Q3	us-gaap	Operating Expenses OperatingExpenses	47024000
CY2017Q2	us-gaap	Operating Expenses OperatingExpenses	46455000
CY2017Q1	us-gaap	Operating Expenses OperatingExpenses	41272000
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	113488000
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	77424000
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	54447000
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	33077000
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	33493000
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	24882000
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	22037000
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	25053000
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	23832000
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	14970000
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	13570000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	2877000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1511000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	26000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	195000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	273000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	872000
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1800000
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1500000
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1700000
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	2848000
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1774000
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	97000
CY2017Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	56000
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	11931000
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	12762000
CY2018Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	743000
CY2017Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	1216000
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1185000
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1091000
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	35868000
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	30068000
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-274000
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-341000
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-648000
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	209000
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	10578000
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5033000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7356000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6028000
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5681000
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	38525000
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	33024000
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4994000
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5520000
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2817000
CY2018Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-393000
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2714000
CY2018Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2232000
CY2018Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	440000
CY2017Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1647000
CY2017Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1255000
CY2017Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1237000
CY2017Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1381000
CY2018Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	3425000
CY2017Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	2742000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	22526000
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	65770000
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	37112000
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	99199000
CY2017	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	140531000
CY2016	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	236912000
CY2018Q4	us-gaap	Prepaid Expense Other Noncurrent PrepaidExpenseOtherNoncurrent	2713000
CY2017Q4	us-gaap	Prepaid Expense Other Noncurrent PrepaidExpenseOtherNoncurrent	897000
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans
CY2016	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans
CY2018	us-gaap	Proceeds From Sale Of Longterm Investments ProceedsFromSaleOfLongtermInvestments	2000000
CY2018Q2	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	23481000
CY2018Q1	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	21609000
CY2017Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	21730000
CY2017	us-gaap	Proceeds From Sale Of Longterm Investments ProceedsFromSaleOfLongtermInvestments
CY2016	us-gaap	Proceeds From Sale Of Longterm Investments ProceedsFromSaleOfLongtermInvestments
CY2018	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	109131000
CY2017	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	77502000
CY2016	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	223344000
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	59000
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	150000
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1344000
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	3028000
CY2017	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2701000
CY2016	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2463000
CY2018Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	4564000
CY2017Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2416000
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1402000
CY2017	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	40000
CY2016	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	68000
CY2018	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	3036000
CY2017	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	486000
CY2016	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	293000
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	259548000
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	247249000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	150001000
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	144636000
CY2018	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	93455000
CY2017	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	82359000
CY2016	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	73643000
CY2018Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	22735000
CY2018Q3	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	25630000
CY2017Q3	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	21442000
CY2017Q2	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	20292000
CY2017Q1	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	18894000
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	114000
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	115000
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	194728000
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	143608000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	582382000
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	470929000
CY2016	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	388665000
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	153497000
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	159975000
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	139761000
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	129150000
CY2017Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	129430000
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	128939000
CY2017Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	112198000
CY2017Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	100362000
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	431116000
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	83012000
CY2018Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	28372000
CY2018Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	29552000
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	113803000
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	97257000
CY2018Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	28561000
CY2018Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	27318000
CY2017Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	24038000
CY2017Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	25255000
CY2017Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	25873000
CY2017Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	22092000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	60607000
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	52617000
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	44989000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	336000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	20000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	21000
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	30.38
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	58.46
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	76.92
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1349000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	666000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1363000
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	43.28
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	66.56
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	80.62
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4232000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4270000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4144000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4633000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	32.64
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	36.47
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	39.91
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	50.94
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	975000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	772000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	853000
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	31.36
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	43.39
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	44.13
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	500000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	700000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3700000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	4134000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	921000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	465000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	90000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	14000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.50
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.88
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	13.89
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.80
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	16.79
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	13.89
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y109D
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P146D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	204577000
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	216331000
CY2017Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	2416000
CY2016Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	1030000
CY2015Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	289000
CY2018Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	4564000
CY2018	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	6586000
CY2017	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	1912000
CY2016	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	1102000
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	76000
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	9000
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	5000
CY2016	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2463000
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2701000
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	3028000
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	10578000
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1344000
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	150000
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	59000
CY2016Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	50000000
CY2017Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	50000000
CY2017	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	640093000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	522007000
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	368516000
CY2018Q4	us-gaap	Supplies Supplies
CY2017Q4	us-gaap	Supplies Supplies	6217000
CY2018Q4	us-gaap	Us Government Securities At Carrying Value USGovernmentSecuritiesAtCarryingValue	32068000
CY2017Q4	us-gaap	Us Government Securities At Carrying Value USGovernmentSecuritiesAtCarryingValue	13024000
CY2018Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	390200000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20491000
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16272000
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12093000
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14431000
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2095000
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2360000
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2957000
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	243000
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	169000
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1474000
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	900000
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	500000
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	688000
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	212000
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	12800000
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	9100000
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:0pt;margin-right:7.5pt;margin-top:0pt;text-align:left;"><div style="display: inline; font-style: italic;"><div style="display: inline; font-weight: bold;">Use of Estimates</div></div></div> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:0pt;margin-right:7.5pt;margin-top:0pt;text-align:left;"> </div> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:0pt;margin-right:7.5pt;margin-top:0pt;text-align:left;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions used in these consolidated financial statements primarily include those related to revenue recognition, inventory valuation, valuation of share-based awards, valuation of goodwill and acquisition-related intangible assets, contingencies and tax valuation allowances. Actual results could differ from those estimates. </div></div></div></div></div></div></div></div></div></div></div>
CY2017Q4	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-21600000
CY2018Q4	us-gaap	Value Added Tax Receivable Current ValueAddedTaxReceivableCurrent	423000
CY2017Q4	us-gaap	Value Added Tax Receivable Current ValueAddedTaxReceivableCurrent	1235000
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2355000
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2228000
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1479000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	44602000
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43578000
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41915000
CY2018Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45058000
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	44669000
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	44400000
CY2018Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	44282000
CY2017Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	44610000
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43486000
CY2017Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43397000
CY2017Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43268000
CY2018Q4	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	42467000
CY2018Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	42362000
CY2018Q2	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	42237000
CY2018Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	41922000
CY2017Q4	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	41574000
CY2017Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	41458000
CY2017Q2	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	41323000
CY2017Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	41047000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	42247000
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41350000
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40436000

Files In Submission

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$MPWR
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2018 Q4 Form 10-K Financial Statement

#000143774919003798 Filed on March 01, 2019

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$MPWR Monolithic Power Systems Inc Stock $mpwr

2018 Q4 Form 10-K Financial Statement

#000143774919003798 Filed on March 01, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MPWR
Monolithic Power Systems Inc Stock $mpwr