$MPWR
Monolithic Power Systems Inc Stock $mpwr

$mpwr Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000143774918003639 Filed on March 01, 2018

Income Statement

Concept	2017 Q4	2017 Q3	2017 Q2
Revenue	$129.4M	$128.9M	$112.2M
YoY Change	24.91%	21.12%	19.26%
Cost Of Revenue	$58.27M	$58.08M	$50.77M
YoY Change	23.69%	19.68%	17.66%
Gross Profit	$71.16M	$70.86M	$61.43M
YoY Change	25.92%	22.32%	20.62%
Gross Profit Margin	54.98%	54.95%	54.75%
Selling, General & Admin	$24.04M	$25.26M	$25.87M
YoY Change	12.77%	12.76%	20.17%
% of Gross Profit	33.78%	35.64%	42.12%
Research & Development	$21.73M	$21.44M	$20.29M
YoY Change	20.9%	4.74%	13.52%
% of Gross Profit	30.54%	30.26%	33.04%
Depreciation & Amortization	$4.000M	$4.000M	$4.100M
YoY Change	-4.76%	11.11%	13.89%
% of Gross Profit	5.62%	5.65%	6.67%
Operating Expenses	$46.11M	$47.02M	$46.46M
YoY Change	18.32%	9.55%	17.91%
Operating Profit	$25.05M	$23.83M	$14.97M
YoY Change	42.82%	58.87%	29.87%
Interest Expense	$1.300M	$1.346M	$1.327M
YoY Change	44.44%	130.09%	154.7%
% of Operating Profit	5.19%	5.65%	8.86%
Other Income/Expense, Net	$1.647M	$1.255M	$1.237M
YoY Change	83.61%	60.9%	107.2%
Pretax Income	$26.70M	$25.09M	$16.21M
YoY Change	44.8%	58.97%	33.68%
Income Tax	$14.63M	$1.445M	$1.193M
% Of Pretax Income	54.79%	5.76%	7.36%
Net Earnings	$12.07M	$23.64M	$15.01M
YoY Change	-27.16%	64.49%	34.08%
Net Earnings / Revenue	9.33%	18.34%	13.38%
Basic Earnings Per Share	$0.29	$0.57	$0.36
Diluted Earnings Per Share	$0.27	$0.54	$0.35
COMMON SHARES
Basic Shares Outstanding		41.46M	41.32M
Diluted Shares Outstanding	44.61M	43.49M	43.40M

Balance Sheet

Concept	2017 Q4	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$299.1M	$299.6M	$277.7M
YoY Change	11.52%	15.63%	13.86%
Cash & Equivalents	$82.76M	$104.4M	$71.11M
Short-Term Investments	$216.3M	$195.2M	$206.6M
Other Short-Term Assets	$12.76M	$13.56M	$14.89M
YoY Change	41.13%	264.52%	274.22%
Inventory	$99.28M	$99.89M	$92.67M
Prepaid Expenses
Receivables	$38.04M	$50.76M	$41.98M
Other Receivables	$1.400M	$1.200M	$1.200M
Total Short-Term Assets	$449.2M	$463.8M	$427.2M
YoY Change	17.28%	26.44%	22.37%
LONG-TERM ASSETS
Property, Plant & Equipment	$144.6M	$100.6M	$100.6M
YoY Change	69.82%	22.57%	35.36%
Goodwill	$6.571M	$6.571M	$6.571M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$951.0K	$1.464M	$1.977M
YoY Change	-68.32%	-58.35%	-50.91%
Long-Term Investments	$5.300M	$5.400M	$5.300M
YoY Change	-1.85%	0.0%	0.0%
Other Assets	$30.07M	$26.52M	$25.73M
YoY Change	9.69%	-11.12%	-10.36%
Total Long-Term Assets	$203.4M	$141.2M	$140.8M
YoY Change	58.73%	15.73%	23.98%
TOTAL ASSETS
Total Short-Term Assets	$449.2M	$463.8M	$427.2M
Total Long-Term Assets	$203.4M	$141.2M	$140.8M
Total Assets	$652.6M	$605.0M	$568.0M
YoY Change	27.67%	22.26%	21.21%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$22.81M	$21.83M	$25.23M
YoY Change	30.91%	25.96%	31.83%
Accrued Expenses	$27.51M	$26.88M	$22.99M
YoY Change	20.03%	22.89%	21.95%
Deferred Revenue	$4.742M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$65.92M	$66.17M	$62.79M
YoY Change	24.56%	19.19%	20.49%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$33.02M	$28.70M	$27.16M
YoY Change	42.23%	47.55%	50.39%
Total Long-Term Liabilities	$33.02M	$28.70M	$27.16M
YoY Change	42.23%	47.55%	50.39%
TOTAL LIABILITIES
Total Short-Term Liabilities	$65.92M	$66.17M	$62.79M
Total Long-Term Liabilities	$33.02M	$28.70M	$27.16M
Total Liabilities	$130.6M	$99.49M	$94.25M
YoY Change	63.18%	26.65%	28.23%
SHAREHOLDERS EQUITY
Retained Earnings	$143.6M	$140.5M	$125.7M
YoY Change	20.31%	25.93%	18.74%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$522.0M	$505.5M	$473.8M
YoY Change
Total Liabilities & Shareholders Equity	$652.6M	$605.0M	$568.0M
YoY Change	27.67%	22.26%	21.21%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	$12.07M	$23.64M	$15.01M
YoY Change	-27.16%	64.49%	34.08%
Depreciation, Depletion And Amortization	$4.000M	$4.000M	$4.100M
YoY Change	-4.76%	11.11%	13.89%
Cash From Operating Activities	$53.40M	$33.60M	$24.90M
YoY Change	72.26%	2.13%	66.0%
INVESTING ACTIVITIES
Capital Expenditures	-$40.70M	-$4.600M	-$17.10M
YoY Change	402.47%	-55.34%	27.61%
Acquisitions
YoY Change
Other Investing Activities	-$25.60M	$10.50M	-$5.400M
YoY Change	156.0%	-5.41%	-150.0%
Cash From Investing Activities	-$66.30M	$5.900M	-$22.50M
YoY Change	268.33%	742.86%	765.38%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-8.600M	-7.100M	-8.600M
YoY Change	7.5%	14.52%	11.69%
NET CHANGE
Cash From Operating Activities	53.40M	33.60M	24.90M
Cash From Investing Activities	-66.30M	5.900M	-22.50M
Cash From Financing Activities	-8.600M	-7.100M	-8.600M
Net Change In Cash	-21.50M	32.40M	-6.200M
YoY Change	-530.0%	18.25%	-231.91%
FREE CASH FLOW
Cash From Operating Activities	$53.40M	$33.60M	$24.90M
Capital Expenditures	-$40.70M	-$4.600M	-$17.10M
Free Cash Flow	$94.10M	$38.20M	$42.00M
YoY Change	140.66%	-11.57%	47.89%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2017Q4	mpwr	Accrued Dividend Equivalents AccruedDividendEquivalents	5800000
CY2016Q4	mpwr	Accrued Dividend Equivalents AccruedDividendEquivalents	4100000
CY2017Q4	mpwr	Accrued Sales Rebate AccruedSalesRebate	1036000
CY2016Q4	mpwr	Accrued Sales Rebate AccruedSalesRebate	441000
CY2017	mpwr	Amortization Of Premium On Available For Sale Investments AmortizationOfPremiumOnAvailableForSaleInvestments	1976000
CY2016	mpwr	Amortization Of Premium On Available For Sale Investments AmortizationOfPremiumOnAvailableForSaleInvestments	1019000
CY2015	mpwr	Amortization Of Premium On Available For Sale Investments AmortizationOfPremiumOnAvailableForSaleInvestments	463000
CY2017	mpwr	Auction Rate Securities Maturities AuctionRateSecuritiesMaturities	P30Y
CY2017Q4	mpwr	Cash Cash Equivalents And Investments CashCashEquivalentsAndInvestments	304346000
CY2016Q4	mpwr	Cash Cash Equivalents And Investments CashCashEquivalentsAndInvestments	273578000
CY2017	mpwr	Cash Flow Model Input Time To Liquidity CashFlowModelInputTimeToLiquidity
CY2016	mpwr	Cash Flow Model Input Time To Liquidity CashFlowModelInputTimeToLiquidity	P2Y
CY2017	mpwr	Contributions Made To Deferred Compensation Plan ContributionsMadeToDeferredCompensationPlan	5261000
CY2016	mpwr	Contributions Made To Deferred Compensation Plan ContributionsMadeToDeferredCompensationPlan	5046000
CY2015	mpwr	Contributions Made To Deferred Compensation Plan ContributionsMadeToDeferredCompensationPlan	8044000
CY2017Q4	mpwr	Deferred Tax Assets Liabilities Property Plant And Equipment DeferredTaxAssetsLiabilitiesPropertyPlantAndEquipment	191000
CY2016Q4	mpwr	Deferred Tax Assets Liabilities Property Plant And Equipment DeferredTaxAssetsLiabilitiesPropertyPlantAndEquipment	161000
CY2017Q4	mpwr	Dividend Equivalents Noncurrent DividendEquivalentsNoncurrent	4881000
CY2016Q4	mpwr	Dividend Equivalents Noncurrent DividendEquivalentsNoncurrent	3294000
CY2017Q4	mpwr	Dividends And Dividend Equivalents DividendsAndDividendEquivalents	9248000
CY2016Q4	mpwr	Dividends And Dividend Equivalents DividendsAndDividendEquivalents	8946000
CY2017Q4	mpwr	Dividends And Dividend Equivalents Accrued DividendsAndDividendEquivalentsAccrued	10686000
CY2016Q4	mpwr	Dividends And Dividend Equivalents Accrued DividendsAndDividendEquivalentsAccrued	10416000
CY2015Q4	mpwr	Dividends And Dividend Equivalents Accrued DividendsAndDividendEquivalentsAccrued	10109000
CY2015	mpwr	Dividends And Dividend Equivalents Declared On Common Stock And Restricted Stock Units DividendsAndDividendEquivalentsDeclaredOnCommonStockAndRestrictedStockUnits	33999000
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
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
CY2015	mpwr	Effective Income Tax Rate Reconciliation Remeasurement Of Deferred Taxes EffectiveIncomeTaxRateReconciliationRemeasurementOfDeferredTaxes
CY2017	mpwr	Effective Income Tax Rate Reconciliation Repatriation Transition Tax EffectiveIncomeTaxRateReconciliationRepatriationTransitionTax	0.505
CY2016	mpwr	Effective Income Tax Rate Reconciliation Repatriation Transition Tax EffectiveIncomeTaxRateReconciliationRepatriationTransitionTax
CY2015	mpwr	Effective Income Tax Rate Reconciliation Repatriation Transition Tax EffectiveIncomeTaxRateReconciliationRepatriationTransitionTax
CY2017	mpwr	Gain Loss On Deferred Compensation Plan Investments GainLossOnDeferredCompensationPlanInvestments	2531000
CY2016	mpwr	Gain Loss On Deferred Compensation Plan Investments GainLossOnDeferredCompensationPlanInvestments	1257000
CY2015	mpwr	Gain Loss On Deferred Compensation Plan Investments GainLossOnDeferredCompensationPlanInvestments	-375000
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
CY2015	mpwr	Gain Loss On Deferred Compensation Plan Investments Cash Flow GainLossOnDeferredCompensationPlanInvestmentsCashFlow	-133000
CY2015Q2	mpwr	Income Tax Examination Tax Payment IncomeTaxExaminationTaxPayment	1600000
CY2017	mpwr	Income Taxes And Interest Paid IncomeTaxesAndInterestPaid	3619000
CY2016	mpwr	Income Taxes And Interest Paid IncomeTaxesAndInterestPaid	1234000
CY2015	mpwr	Income Taxes And Interest Paid IncomeTaxesAndInterestPaid	3322000
CY2017	mpwr	Litigation Expense Benefit Net LitigationExpenseBenefitNet	1243000
CY2016	mpwr	Litigation Expense Benefit Net LitigationExpenseBenefitNet	-229000
CY2015	mpwr	Litigation Expense Benefit Net LitigationExpenseBenefitNet	1000000
CY2017	mpwr	Other Interest And Other Income OtherInterestAndOtherIncome	162000
CY2016	mpwr	Other Interest And Other Income OtherInterestAndOtherIncome	26000
CY2015	mpwr	Other Interest And Other Income OtherInterestAndOtherIncome	43000
CY2017	mpwr	Payments Of Dividends And Dividend Equivalents PaymentsOfDividendsAndDividendEquivalents	33926000
CY2016	mpwr	Payments Of Dividends And Dividend Equivalents PaymentsOfDividendsAndDividendEquivalents	33099000
CY2015	mpwr	Payments Of Dividends And Dividend Equivalents PaymentsOfDividendsAndDividendEquivalents	29965000
CY2017	mpwr	Percentage Of Auction Rate Securities Redeemedat Par Value PercentageOfAuctionRateSecuritiesRedeemedatParValue	0.87
CY2017Q4	mpwr	Prepaid Supplies Noncurrent PrepaidSuppliesNoncurrent
CY2016Q4	mpwr	Prepaid Supplies Noncurrent PrepaidSuppliesNoncurrent	5000000
CY2017	mpwr	Property And Equipment Purchased On Extended Payment Terms PropertyAndEquipmentPurchasedOnExtendedPaymentTerms	250000
CY2016	mpwr	Property And Equipment Purchased On Extended Payment Terms PropertyAndEquipmentPurchasedOnExtendedPaymentTerms	300000
CY2015	mpwr	Property And Equipment Purchased On Extended Payment Terms PropertyAndEquipmentPurchasedOnExtendedPaymentTerms	300000
CY2015	mpwr	Repurchase Stock Average Price Per Share RepurchaseStockAveragePricePerShare	50.05
CY2015Q4	mpwr	Shares Repurchased Value SharesRepurchasedValue	32300000
CY2017Q4	mpwr	Stock Rotation Reserve StockRotationReserve	2647000
CY2016Q4	mpwr	Stock Rotation Reserve StockRotationReserve	1937000
CY2017	mpwr	Transition Tax TransitionTax	41900000
CY2017Q4	mpwr	Transition Tax Payable TransitionTaxPayable	23900000
CY2017	mpwr	Utilization Of Rd Tax Credit UtilizationOfRDTaxCredit	18000000
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	22813000
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	17427000
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	38037000
CY2016Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	34248000
CY2017Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2861000
CY2016Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1239000
CY2017Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	31621000
CY2016Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	3870000
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	27507000
CY2016Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	22916000
CY2017Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	938000
CY2016Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	1008000
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	102613000
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	85290000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1813000
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-4215000
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	41650000
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
CY2015	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	5928000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	1465000
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	52617000
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	44989000
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	41563000
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-29944000
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	21843000
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	0
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	0
CY2017Q4	us-gaap	Assets Assets	652569000
CY2016Q4	us-gaap	Assets Assets	511126000
CY2017Q4	us-gaap	Assets Current AssetsCurrent	449170000
CY2016Q4	us-gaap	Assets Current AssetsCurrent	382984000
CY2017Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	245846000
CY2016Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	197939000
CY2017Q4	us-gaap	Auction Rate Securities Noncurrent AuctionRateSecuritiesNoncurrent	5256000
CY2016Q4	us-gaap	Auction Rate Securities Noncurrent AuctionRateSecuritiesNoncurrent	5354000
CY2017Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	221587000
CY2016Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	160875000
CY2017Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	229221000
CY2016Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	185831000
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	17000
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	65000
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1381000
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1088000
CY2017Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	230585000
CY2016Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	186854000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	215844000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	136567000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	5256000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	5354000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	126932000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	107953000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	89399000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	47568000
CY2014Q3	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	14200000
CY2017	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
CY2016	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
CY2015	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-2507000
CY2014Q3	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	2500000
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3061000
CY2016	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	787000
CY2015	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2184000
CY2017Q4	us-gaap	Cash Cash	75125000
CY2016Q4	us-gaap	Cash Cash	87747000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	82759000
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	112703000
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	90860000
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	126266000
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-35406000
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2017Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.80
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.80
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.80
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2017Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2017Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2016Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2016Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2016Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2016Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	41614000
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	40793000
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	41614000
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	40793000
CY2017Q4	us-gaap	Common Stocks Including Additional Paid In Capital CommonStocksIncludingAdditionalPaidInCapital	376586000
CY2016Q4	us-gaap	Common Stocks Including Additional Paid In Capital CommonStocksIncludingAdditionalPaidInCapital	315969000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	71231000
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	47039000
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	30827000
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2527000
CY2017	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=" 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<div style="display: inline; font-family:Times New Roman, Times, serif;font-size:10pt;">’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 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. The Company did <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">not</div> record any allowance for doubtful accounts as of <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;"> December 31, 2017 </div>and <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">2016.</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;">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<div style="display: inline; font-family:Times New Roman, Times, serif;font-size:10pt;">’s ability to attract and retain employees necessary to support its growth.</div></div></div></div></div></div></div>
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	212646000
CY2016	us-gaap	Cost Of Revenue CostOfRevenue	177792000
CY2015	us-gaap	Cost Of Revenue CostOfRevenue	152898000
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
CY2016Q4	us-gaap	Cost Of Revenue CostOfRevenue	47107000
CY2016Q3	us-gaap	Cost Of Revenue CostOfRevenue	48531000
CY2016Q2	us-gaap	Cost Of Revenue CostOfRevenue	43153000
CY2016Q1	us-gaap	Cost Of Revenue CostOfRevenue	39002000
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	31025000
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6042000
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1967000
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2013000
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1213000
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2000
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2000
CY2017Q4	us-gaap	Customer Advances Current CustomerAdvancesCurrent	4742000
CY2016Q4	us-gaap	Customer Advances Current CustomerAdvancesCurrent	3246000
CY2017Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	28087000
CY2016Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	19836000
CY2017Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	28443000
CY2016Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	20315000
CY2017Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	28080000
CY2016Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	20288000
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-15426000
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	173000
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	4000
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	62000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-15238000
CY2016Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	3553000
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5000
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	42000
CY2017Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	1845000
CY2016Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	8200000
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.58
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.30
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
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
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	28485000
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	27987000
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	15917000
CY2016Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	633000
CY2017Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	15917000
CY2016Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	633000
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1377000
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	10331000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	9817000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	5505000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6752000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	9157000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	7283000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	1924000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	3974000
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12568000
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	27354000
CY2017	us-gaap	Depreciation Depreciation	14000000
CY2016	us-gaap	Depreciation Depreciation	12600000
CY2015	us-gaap	Depreciation Depreciation	12000000
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	16101000
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14674000
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13783000
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	33145000
CY2016	us-gaap	Dividends Common Stock DividendsCommonStock	32434000
CY2015	us-gaap	Dividends Common Stock DividendsCommonStock	31618000
CY2017Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	8300000
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.50
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.26
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.86
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
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
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
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	5928000
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1620000
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2090000
CY2015	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1293000
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.214
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.079
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.172
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.176
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.431
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.025
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	0.062
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	15597000
CY2016Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	12578000
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
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
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
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	5928000
CY2017Q1	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-286000
CY2016Q4	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	321000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6533000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4482000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	841000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	110000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	7484000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	7484000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	951000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3002000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-550000
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	65000
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	608000
CY2009	us-gaap	Gain Loss On Investments GainLossOnInvestments	70000
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
CY2015	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	339000
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
CY2016Q3	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-55000
CY2016Q2	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	8000
CY2015Q2	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense	1100000
CY2011Q2	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	10500000
CY2016Q1	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-45000
CY2017Q4	us-gaap	Goodwill Goodwill	6571000
CY2016Q4	us-gaap	Goodwill Goodwill	6571000
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2015	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2017	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0
CY2016	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0
CY2017	us-gaap	Gross Profit GrossProfit	258283000
CY2016	us-gaap	Gross Profit GrossProfit	210873000
CY2015	us-gaap	Gross Profit GrossProfit	180169000
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
CY2016Q4	us-gaap	Gross Profit GrossProfit	56511000
CY2016Q3	us-gaap	Gross Profit GrossProfit	57925000
CY2016Q2	us-gaap	Gross Profit GrossProfit	50926000
CY2016Q1	us-gaap	Gross Profit GrossProfit	45510000
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
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-247000
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
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	42491000
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
CY2016Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	18439000
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	15781000
CY2016Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	12124000
CY2016Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10919000
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
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	42738000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17741000
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4544000
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7319000
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
CY2016Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1866000
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1408000
CY2016Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	926000
CY2016Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	344000
CY2017	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	9800000
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3077000
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5483000
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	147000
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	29347000
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3165000
CY2015	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3998000
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	10852000
CY2016	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	8035000
CY2015	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	9942000
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	2397000
CY2016	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	3136000
CY2015	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	1068000
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	27795000
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	8323000
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	22210000
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1603000
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11021000
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	390000
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	3785000
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	3421000
CY2015	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	5201000
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	951000
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3002000
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	5353000
CY2016	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	2488000
CY2015	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	1608000
CY2017Q4	us-gaap	Interest Receivable Current InterestReceivableCurrent	1352000
CY2016Q4	us-gaap	Interest Receivable Current InterestReceivableCurrent	966000
CY2017Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	38678000
CY2016Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	30822000
CY2017Q4	us-gaap	Inventory Net InventoryNet	99281000
CY2016Q4	us-gaap	Inventory Net InventoryNet	71469000
CY2017Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	20573000
CY2016Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	14599000
CY2017Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	40030000
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
CY2016Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	26048000
CY2017Q4	us-gaap	Liabilities Liabilities	130562000
CY2016Q4	us-gaap	Liabilities Liabilities	80010000
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	652569000
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	511126000
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	65917000
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	52921000
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	5256000
CY2016Q4	us-gaap	Long Term Investments LongTermInvestments	5354000
CY2017Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	7134000
CY2016Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	24956000
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
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-46652000
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
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-57197000
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
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	69736000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	65203000
CY2016	us-gaap	Net Income Loss NetIncomeLoss	52720000
CY2015	us-gaap	Net Income Loss NetIncomeLoss	35172000
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
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	16573000
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	14373000
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	11198000
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	10575000
CY2017Q4	us-gaap	Noncurrent Assets NoncurrentAssets	180238000
CY2016Q4	us-gaap	Noncurrent Assets NoncurrentAssets	115033000
CY2015Q4	us-gaap	Noncurrent Assets NoncurrentAssets	93324000
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2017	us-gaap	Operating Expenses OperatingExpenses	180859000
CY2016	us-gaap	Operating Expenses OperatingExpenses	156426000
CY2015	us-gaap	Operating Expenses OperatingExpenses	139099000
CY2016Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	11527000
CY2016Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	10376000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	2145000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1210000
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1700000
CY2016Q4	us-gaap	Operating Expenses OperatingExpenses	38969000
CY2016Q3	us-gaap	Operating Expenses OperatingExpenses	42924000
CY2016Q2	us-gaap	Operating Expenses OperatingExpenses	39399000
CY2016Q1	us-gaap	Operating Expenses OperatingExpenses	35134000
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	77424000
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	54447000
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	41070000
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
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	17542000
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	15001000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	51000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	55000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	193000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	636000
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1500000
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1800000
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1774000
CY2016Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1516000
CY2017Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	56000
CY2016Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	89000
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	12762000
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	9043000
CY2017Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	1216000
CY2016Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	565000
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1091000
CY2016Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1006000
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	30068000
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	27411000
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
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-179000
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6369000
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5033000
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4166000
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6028000
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5681000
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4345000
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	33024000
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	23219000
CY2017Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1237000
CY2017Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1381000
CY2016Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	897000
CY2016Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	780000
CY2016Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	597000
CY2016Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	543000
CY2017Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	2742000
CY2016Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	2249000
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	32286000
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5520000
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2817000
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1421000
CY2017Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1647000
CY2017Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1255000
CY2014Q3	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	11700000
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	65773000
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	37112000
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16024000
CY2017	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	140531000
CY2016	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	236912000
CY2015	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	223018000
CY2017Q4	us-gaap	Prepaid Expense Other Noncurrent PrepaidExpenseOtherNoncurrent	897000
CY2016Q4	us-gaap	Prepaid Expense Other Noncurrent PrepaidExpenseOtherNoncurrent	1117000
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3000
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment
CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	340000
CY2017	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	77502000
CY2016	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	223344000
CY2015	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	189549000
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	150000
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1344000
CY2015	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	7744000
CY2017	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2701000
CY2016	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2463000
CY2015	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2227000
CY2017Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2416000
CY2016Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	1030000
CY2017	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	40000
CY2016	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	68000
CY2015	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	158000
CY2017	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	486000
CY2016	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	293000
CY2015	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	126000
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	247249000
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	170461000
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	144636000
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	85171000
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
CY2015	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	65787000
CY2017Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	21730000
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
CY2016Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	17974000
CY2016Q3	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	20472000
CY2016Q2	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	17876000
CY2016Q1	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	17321000
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	143608000
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	119362000
CY2017	us-gaap	Sales Revenue Net SalesRevenueNet	470929000
CY2016	us-gaap	Sales Revenue Net SalesRevenueNet	388665000
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	333067000
CY2017Q4	us-gaap	Sales Revenue Net SalesRevenueNet	129430000
CY2017Q3	us-gaap	Sales Revenue Net SalesRevenueNet	128939000
CY2017Q2	us-gaap	Sales Revenue Net SalesRevenueNet	112198000
CY2017Q1	us-gaap	Sales Revenue Net SalesRevenueNet	100362000
CY2016Q4	us-gaap	Sales Revenue Net SalesRevenueNet	103618000
CY2016Q3	us-gaap	Sales Revenue Net SalesRevenueNet	106456000
CY2016Q2	us-gaap	Sales Revenue Net SalesRevenueNet	94079000
CY2016Q1	us-gaap	Sales Revenue Net SalesRevenueNet	84512000
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	52617000
CY2017Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	22092000
CY2016Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	21316000
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	97257000
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	83012000
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	72312000
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
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	44989000
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	41563000
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	66000
CY2016Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	22397000
CY2016Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	21531000
CY2016Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	17768000
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
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	33.06
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
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1198000
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
CY2015	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	48.11
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
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4048000
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
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	26.14
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
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	948000
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
CY2015	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	24.47
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
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	5000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	13.89
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
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	18600000
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	2000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	20039000
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
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	590000
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
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.80
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
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	15.55
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
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	6.10
CY2017Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	50000000
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	465000
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P146D
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y73D
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
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	216331000
CY2016Q4	us-gaap	Short Term Investments ShortTermInvestments	155521000
CY2016Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	1030000
CY2015Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	289000
CY2014Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	240000
CY2017Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	2416000
CY2017	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	1912000
CY2016	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	1102000
CY2015	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	333000
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	498000
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
CY2015	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2227000
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
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	7744000
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
CY2013Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	100000000
CY2016Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	50000000
CY2015Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	5900000
CY2015	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	600000
CY2017	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2016	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2015	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	32286000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	522007000
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	431116000
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	346425000
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	368516000
CY2017Q4	us-gaap	Supplies Supplies	6217000
CY2016Q4	us-gaap	Supplies Supplies	5000000
CY2015Q2	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	2700000
CY2017Q4	us-gaap	Us Government Securities At Carrying Value USGovernmentSecuritiesAtCarryingValue	13024000
CY2016Q4	us-gaap	Us Government Securities At Carrying Value USGovernmentSecuritiesAtCarryingValue	45877000
CY2017Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	390200000
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16272000
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14431000
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16406000
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12093000
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1446000
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	4162000
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1964000
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
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
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	500000
CY2016Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	300000
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	669000
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	688000
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	9100000
CY2016Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3500000
CY2017Q4	us-gaap	Value Added Tax Receivable Current ValueAddedTaxReceivableCurrent	1235000
CY2016Q4	us-gaap	Value Added Tax Receivable Current ValueAddedTaxReceivableCurrent	263000
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2228000
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1479000
CY2017	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=" 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;">Use of Estimates</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;">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.<div style="display: inline; font-family:Times New Roman, Times, serif;font-size:10pt;"> Actual results could differ from those estimates. </div></div></div></div></div></div></div>
CY2017Q4	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-21600000
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1399000
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43578000
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41915000
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40869000
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
CY2016Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42404000
CY2016Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41895000
CY2016Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41716000
CY2016Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41646000
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
CY2016Q4	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	40739000
CY2016Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	40590000
CY2016Q2	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	40387000
CY2016Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	40028000
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41350000
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40436000
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39470000

Files In Submission

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$MPWR
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2017 Q4 Form 10-K Financial Statement

#000143774918003639 Filed on March 01, 2018

Income Statement

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Facts In Submission

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$MPWR Monolithic Power Systems Inc Stock $mpwr

2017 Q4 Form 10-K Financial Statement

#000143774918003639 Filed on March 01, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MPWR
Monolithic Power Systems Inc Stock $mpwr