$DIOD
DIODES INC /DEL/ Stock $diod

$diod Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000156459019003715 Filed on February 21, 2019

Income Statement

Concept	2018 Q4	2017 Q4	2017 Q3
Revenue	$314.4M	$268.4M	$285.2M
YoY Change	17.14%	15.66%	13.78%
Cost Of Revenue	$200.2M	$172.1M	$188.9M
YoY Change	16.33%	4.43%	11.05%
Gross Profit	$114.2M	$96.38M	$96.35M
YoY Change	18.49%	43.29%	19.5%
Gross Profit Margin	36.32%	35.9%	33.78%
Selling, General & Admin	$44.40M	$45.70M	$43.50M
YoY Change	-2.84%	16.88%	13.58%
% of Gross Profit	38.88%	47.42%	45.15%
Research & Development	$21.50M	$19.70M	$20.40M
YoY Change	9.14%	11.3%	19.3%
% of Gross Profit	18.83%	20.44%	21.17%
Depreciation & Amortization	$4.500M	$4.700M	$4.700M
YoY Change	-4.26%	-7.84%	-7.84%
% of Gross Profit	3.94%	4.88%	4.88%
Operating Expenses	$70.00M	$69.60M	$68.60M
YoY Change	0.57%	12.44%	13.2%
Operating Profit	$44.20M	$26.78M	$27.75M
YoY Change	65.05%	399.33%	38.58%
Interest Expense	-$2.100M	-$3.700M	-$4.500M
YoY Change	-43.24%	19.35%	32.35%
% of Operating Profit	-4.75%	-13.82%	-16.22%
Other Income/Expense, Net	$1.000M	$2.000M	$600.0K
YoY Change	-50.0%	-44.44%	-160.0%
Pretax Income	$42.80M	$20.80M	-$27.78M
YoY Change	105.77%	700.0%	281.95%
Income Tax	$10.10M	$4.800M	$5.100M
% Of Pretax Income	23.6%	23.08%
Net Earnings	$29.52M	-$30.65M	$14.45M
YoY Change	-196.31%	-2517.27%	35.71%
Net Earnings / Revenue	9.39%	-11.42%	5.07%
Basic Earnings Per Share	$0.59	-$0.62	$0.29
Diluted Earnings Per Share	$0.58	-$0.62	$0.29
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept	2018 Q4	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$248.6M	$208.4M	$214.0M
YoY Change	19.29%	-24.93%	-16.18%
Cash & Equivalents	$241.1M	$203.8M	$201.2M
Short-Term Investments	$7.500M	$4.600M	$12.70M
Other Short-Term Assets	$42.40M	$37.30M	$45.60M
YoY Change	13.67%	-15.99%	12.04%
Inventory	$215.4M	$216.5M	$211.4M
Prepaid Expenses
Receivables	$228.4M	$200.1M	$230.5M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$734.8M	$662.3M	$701.5M
YoY Change	10.95%	-9.62%	-5.14%
LONG-TERM ASSETS
Property, Plant & Equipment	$446.8M	$459.2M	$446.1M
YoY Change	-2.69%	14.22%	7.32%
Goodwill	$132.4M	$134.2M
YoY Change	-1.3%	3.69%
Intangibles	$137.9M	$156.4M
YoY Change	-11.83%
Long-Term Investments
YoY Change
Other Assets	$42.67M	$35.97M	$98.40M
YoY Change	18.64%	-59.81%	15.22%
Total Long-Term Assets	$791.5M	$826.3M	$839.1M
YoY Change	-4.21%	3.85%	3.22%
TOTAL ASSETS
Total Short-Term Assets	$734.8M	$662.3M	$701.5M
Total Long-Term Assets	$791.5M	$826.3M	$839.1M
Total Assets	$1.526B	$1.489B	$1.541B
YoY Change	2.53%	-2.61%	-0.76%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$117.8M	$108.0M	$111.7M
YoY Change	9.08%	23.29%	23.43%
Accrued Expenses	$82.61M	$99.30M	$94.40M
YoY Change	-16.81%	38.69%	31.48%
Deferred Revenue
YoY Change
Short-Term Debt	$10.30M	$1.000M	$0.00
YoY Change	930.0%
Long-Term Debt Due	$27.61M	$20.64M	$19.10M
YoY Change	33.81%	43.74%	85.44%
Total Short-Term Liabilities	$254.0M	$247.2M	$225.2M
YoY Change	2.78%	33.33%	30.48%
LONG-TERM LIABILITIES
Long-Term Debt	$186.1M	$247.5M	$306.7M
YoY Change	-24.81%	-40.09%	-24.66%
Other Long-Term Liabilities	$90.78M	$94.93M	$85.20M
YoY Change	-4.37%	16.62%	-12.35%
Total Long-Term Liabilities	$90.78M	$94.93M	$391.9M
YoY Change	-4.37%	-80.8%	-22.29%
TOTAL LIABILITIES
Total Short-Term Liabilities	$254.0M	$247.2M	$225.2M
Total Long-Term Liabilities	$90.78M	$94.93M	$391.9M
Total Liabilities	$548.9M	$614.8M	$687.3M
YoY Change	-10.71%	-18.3%	-8.82%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$434.4M	$420.1M
YoY Change	3.41%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$37.77M	$37.77M
YoY Change	0.0%	30.13%
Treasury Stock Shares		$1.457M
Shareholders Equity	$931.5M	$831.5M	$853.2M
YoY Change
Total Liabilities & Shareholders Equity	$1.526B	$1.489B	$1.541B
YoY Change	2.53%	-2.61%	-0.76%

Cashflow Statement

Concept	2018 Q4	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	$29.52M	-$30.65M	$14.45M
YoY Change	-196.31%	-2517.27%	35.71%
Depreciation, Depletion And Amortization	$4.500M	$4.700M	$4.700M
YoY Change	-4.26%	-7.84%	-7.84%
Cash From Operating Activities	$61.70M	$74.80M	$40.90M
YoY Change	-17.51%	50.2%	23.94%
INVESTING ACTIVITIES
Capital Expenditures	-$15.30M	-$29.30M	-$38.00M
YoY Change	-47.78%	157.02%	111.11%
Acquisitions
YoY Change
Other Investing Activities	$500.0K	$15.30M	$3.200M
YoY Change	-96.73%	282.5%	-61.45%
Cash From Investing Activities	-$14.80M	-$13.90M	-$34.80M
YoY Change	6.47%	82.89%	262.5%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	46.10M	-60.40M	-74.40M
YoY Change	-176.32%	556.52%	-2665.52%
NET CHANGE
Cash From Operating Activities	61.70M	74.80M	40.90M
Cash From Investing Activities	-14.80M	-13.90M	-34.80M
Cash From Financing Activities	46.10M	-60.40M	-74.40M
Net Change In Cash	93.00M	500.0K	-68.30M
YoY Change	18500.0%	-98.48%	-359.7%
FREE CASH FLOW
Cash From Operating Activities	$61.70M	$74.80M	$40.90M
Capital Expenditures	-$15.30M	-$29.30M	-$38.00M
Free Cash Flow	$77.00M	$104.1M	$78.90M
YoY Change	-26.03%	70.1%	54.71%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2017Q4	us-gaap	Inventory Net InventoryNet	216506000
CY2017Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	37328000
CY2017Q4	us-gaap	Assets Current AssetsCurrent	662324000
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	241053000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	203820000
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	7499000
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	4558000
CY2018Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	228405000
CY2017Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	200112000
CY2018Q4	us-gaap	Inventory Net InventoryNet	215435000
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	459169000
CY2017Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	40580000
CY2017Q4	us-gaap	Goodwill Goodwill	134187000
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	156445000
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	35968000
CY2017Q4	us-gaap	Assets Assets	1488673000
CY2018Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	10254000
CY2017Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	1008000
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	108001000
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	99301000
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	18216000
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	27613000
CY2016	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-70000
CY2016	us-gaap	Operating Expenses OperatingExpenses	248932000
CY2018	dei	Trading Symbol TradingSymbol	DIOD
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	51740020
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018Q2	dei	Entity Public Float EntityPublicFloat	1300000000
CY2017Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	52578000
CY2016	us-gaap	Amortization Of Acquisition Costs AmortizationOfAcquisitionCosts	20478000
CY2018	us-gaap	Gross Profit GrossProfit	435276000
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	176197000
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	168590000
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	77877000
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	69937000
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2211000
CY2016	us-gaap	Asset Impairment Charges AssetImpairmentCharges	114000
CY2018	us-gaap	Restructuring Charges RestructuringCharges	206000
CY2017	us-gaap	Restructuring Charges RestructuringCharges	10137000
CY2016	us-gaap	Restructuring Charges RestructuringCharges	12000
CY2017	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	246000
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	20636000
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	254024000
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	247162000
CY2018Q4	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	186143000
CY2017Q4	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	247492000
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	17993000
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	25176000
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CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	94925000
CY2018Q4	us-gaap	Liabilities Liabilities	548939000
CY2017Q4	us-gaap	Liabilities Liabilities	614755000
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue
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CY2017Q4	us-gaap	Common Stock Value CommonStockValue	33727000
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CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	386338000
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CY2017Q4	us-gaap	Retained Earnings Appropriated RetainedEarningsAppropriated	532687000
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	37768000
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	37768000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-101846000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-83480000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	931463000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	831504000
CY2018Q4	us-gaap	Minority Interest MinorityInterest	45969000
CY2017Q4	us-gaap	Minority Interest MinorityInterest	42414000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	977432000
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	873918000
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1526371000
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1488673000
CY2018Q4	us-gaap	Allowance For Notes And Loans Receivable Current AllowanceForNotesAndLoansReceivableCurrent	4102000
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CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.666
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CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000
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CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	49130090
CY2018Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1457206
CY2017Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1457206
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1213989000
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1054204000
CY2016	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	942162000
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	778713000
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	697428000
CY2016	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	655239000
CY2017	us-gaap	Gross Profit GrossProfit	356776000
CY2016	us-gaap	Gross Profit GrossProfit	286923000
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	158321000
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	390000
CY2016	us-gaap	Impairment Of Investments ImpairmentOfInvestments	3218000
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CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48824000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50935000
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48824000
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49789000
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CY2018	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	22543000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-33065000
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	21979000
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	87040000
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CY2016	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	-567000
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CY2017	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	476000
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CY2017	us-gaap	Adjustments To Additional Paid In Capital Income Tax Deficiency From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalIncomeTaxDeficiencyFromShareBasedCompensation	278000
CY2018	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	4902000
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CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1091000
CY2016	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	15978000
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1811000
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-533000
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-5176000
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2456000
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2640000
CY2016	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-3158000
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1219000
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	156000
CY2016	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-8623000
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	429000
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	6512000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	185566000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	181123000
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	124742000
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	41000
CY2018	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	15901000
CY2017	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	12205000
CY2018	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	12576000
CY2017	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	38600000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	87507000
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	111161000
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	58549000
CY2017	diod	Subsidies And Grants SubsidiesAndGrants	6968000
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1500000
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2333000
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	723000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-88944000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-78912000
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-26407000
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	9151000
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	3375000
CY2016	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	9000000
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	2797000
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	2391000
CY2016	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	9000000
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	11294000
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	278000
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2528000
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	4862000
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	13606000
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	120000
CY2016	diod	Excess Taxes Paid Benefit From Share Based Compensation Financing Activities ExcessTaxesPaidBenefitFromShareBasedCompensationFinancingActivities	-1078000
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	465656000
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	44500000
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	43500000
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	111000
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2045000
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	522473000
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	204374000
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	79913000
CY2018	diod	Proceeds From Repayments Of Capital Lease Obligations ProceedsFromRepaymentsOfCapitalLeaseObligations	-1198000
CY2017	diod	Proceeds From Repayments Of Capital Lease Obligations ProceedsFromRepaymentsOfCapitalLeaseObligations	587000
CY2016	diod	Proceeds From Repayments Of Capital Lease Obligations ProceedsFromRepaymentsOfCapitalLeaseObligations	19000
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8745000
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18014000
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	6255000
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	2694000
CY2017	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	5754000
CY2016	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	4869000
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	225000
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	2575000
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-768000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-51911000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-158184000
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-63458000
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-8078000
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	11461000
CY2016	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-4588000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	36633000
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-44512000
CY2016	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	30289000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	205200000
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	249712000
CY2015Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	219423000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	241833000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	9962000
CY2017	us-gaap	Interest Paid Net InterestPaidNet	13547000
CY2016	us-gaap	Interest Paid Net InterestPaidNet	11708000
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	33265000
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	30447000
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	17099000
CY2018	diod	Payments To Proceeds From Capital Expenditure Incurred But Not Yet Paid PaymentsToProceedsFromCapitalExpenditureIncurredButNotYetPaid	7766000
CY2017	diod	Payments To Proceeds From Capital Expenditure Incurred But Not Yet Paid PaymentsToProceedsFromCapitalExpenditureIncurredButNotYetPaid	-14081000
CY2016	diod	Payments To Proceeds From Capital Expenditure Incurred But Not Yet Paid PaymentsToProceedsFromCapitalExpenditureIncurredButNotYetPaid	6393000
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	247802000
CY2018Q4	us-gaap	Restricted Cash Equivalents Current RestrictedCashEquivalentsCurrent	780000
CY2017Q4	us-gaap	Restricted Cash Equivalents Current RestrictedCashEquivalentsCurrent	1380000
CY2016Q4	us-gaap	Restricted Cash Equivalents Current RestrictedCashEquivalentsCurrent	1910000
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Use of estimates –<font style="font-weight:normal;"> The preparation of financial statements in conformity with generally accepted accounting principles in the United States of America (“GAAP”) requires that management make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The level of uncertainty in estimates and assumptions increases with the length of time until the underlying transactions are completed. Actual results may differ from these estimates in amounts that may be material to the consolidated financial statements and accompanying notes.</font></p>
CY2018	us-gaap	Reclassifications Reclassifications	<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:12pt;font-family:Times New Roman;"> </p> <p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;text-indent:4.54%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Reclassifications <font style="font-weight:normal;">– Certain immaterial amounts from prior periods have been reclassified to conform to the current years’ presentation.</font></p>
CY2017Q4	diod	Intangible Assets Currency Translation IntangibleAssetsCurrencyTranslation	9246000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	17907000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	15902000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	15205000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	14389000
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4500000
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Adjustment To Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateAdjustmentToIncomeTaxExpenseBenefit	2762000
CY2018	diod	Sales Returns And Other Allowances SalesReturnsAndOtherAllowances	158800000
CY2017	diod	Sales Returns And Other Allowances SalesReturnsAndOtherAllowances	158100000
CY2016	diod	Sales Returns And Other Allowances SalesReturnsAndOtherAllowances	132900000
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4100000
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1094000
CY2017	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	300000
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1192000
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1103000
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3508000
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1427000
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-112700000
CY2018Q4	diod	Accumulated Other Comprehensive Income Loss Unrealized Foreign Currency Gain Losses Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnrealizedForeignCurrencyGainLossesNetOfTax	-64553000
CY2017Q4	diod	Accumulated Other Comprehensive Income Loss Unrealized Foreign Currency Gain Losses Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnrealizedForeignCurrencyGainLossesNetOfTax	-42010000
CY2018Q4	diod	Accumulated Other Comprehensive Income Loss Unrealized Interest Rate Swap Gain Losses Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnrealizedInterestRateSwapGainLossesNetOfTax	3261000
CY2017Q4	diod	Accumulated Other Comprehensive Income Loss Unrealized Interest Rate Swap Gain Losses Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnrealizedInterestRateSwapGainLossesNetOfTax	2524000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-40554000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-43994000
CY2018Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	10104000
CY2017Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	8843000
CY2017Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	81194000
CY2017Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	82734000
CY2017Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	203054000
CY2017Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	774138000
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	977192000
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	581753000
CY2017Q4	diod	Property Plant And Equipment Net Excluding Cip And Land PropertyPlantAndEquipmentNetExcludingCipAndLand	395439000
CY2017Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	22446000
CY2017Q4	us-gaap	Land Land	41284000
CY2017Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	1000000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	106410000
CY2018Q4	diod	Finite Lived Intangible Assets Cumulative Currency Translation FiniteLivedIntangibleAssetsCumulativeCurrencyTranslation	8281000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	124176000
CY2018Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	13759000
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	253750000
CY2018Q4	diod	Intangible Assets Accumulated Amortization IntangibleAssetsAccumulatedAmortization	106410000
CY2018Q4	diod	Intangible Assets Currency Translation IntangibleAssetsCurrencyTranslation	9405000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	234533000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	88059000
CY2017Q4	diod	Finite Lived Intangible Assets Cumulative Currency Translation FiniteLivedIntangibleAssetsCumulativeCurrencyTranslation	8249000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	138225000
CY2017Q4	diod	Indefinite Lived Intangible Assets Excluding Goodwill Gross IndefiniteLivedIntangibleAssetsExcludingGoodwillGross	19217000
CY2017Q4	diod	Indefinite Lived Intangible Assets Cumulative Currency Translation IndefiniteLivedIntangibleAssetsCumulativeCurrencyTranslation	997000
CY2017Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	18220000
CY2017Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	253750000
CY2017Q4	diod	Intangible Assets Accumulated Amortization IntangibleAssetsAccumulatedAmortization	88059000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	14124000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	46649000
CY2016Q4	us-gaap	Goodwill Goodwill	129412000
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	4775000
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1029000
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-2779000
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	215191000
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	270083000
CY2018Q4	us-gaap	Deferred Finance Costs Current Gross DeferredFinanceCostsCurrentGross	1435000
CY2017Q4	us-gaap	Deferred Finance Costs Current Gross DeferredFinanceCostsCurrentGross	1955000
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	27385000
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	33158000
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	150909000
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	288000
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	292000
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	3159000
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	1129000
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	922000
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	139000
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	2190000
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	67000
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	2123000
CY2018Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	1082000
CY2018Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	1041000
CY2018Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	5800000
CY2018Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	3300000
CY2018Q4	diod	Accrued Expenses Current AccruedExpensesCurrent	28170000
CY2017Q4	diod	Accrued Expenses Current AccruedExpensesCurrent	29764000
CY2018Q4	diod	Compensation And Payroll Taxes Current CompensationAndPayrollTaxesCurrent	33632000
CY2017Q4	diod	Compensation And Payroll Taxes Current CompensationAndPayrollTaxesCurrent	34359000
CY2018Q4	diod	Equipment Purchases Current EquipmentPurchasesCurrent	12568000
CY2017Q4	diod	Equipment Purchases Current EquipmentPurchasesCurrent	20637000
CY2018Q4	diod	Accrued Pricing Adjustments Current AccruedPricingAdjustmentsCurrent	3591000
CY2017Q4	diod	Accrued Pricing Adjustments Current AccruedPricingAdjustmentsCurrent	11410000
CY2018Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	3242000
CY2017Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	2088000
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1402000
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1043000
CY2018Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	26349000
CY2017Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	34428000
CY2018Q4	diod	Unrecognized Tax Benefits Net Of Portion Used To Reduce Deferred Tax Asset UnrecognizedTaxBenefitsNetOfPortionUsedToReduceDeferredTaxAsset	27711000
CY2017Q4	diod	Unrecognized Tax Benefits Net Of Portion Used To Reduce Deferred Tax Asset UnrecognizedTaxBenefitsNetOfPortionUsedToReduceDeferredTaxAsset	24211000
CY2018Q4	diod	Deferred Grant And Subsidy Liability Noncurrent DeferredGrantAndSubsidyLiabilityNoncurrent	15359000
CY2017Q4	diod	Deferred Grant And Subsidy Liability Noncurrent DeferredGrantAndSubsidyLiabilityNoncurrent	17173000
CY2018Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	8475000
CY2017Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	8319000
CY2018Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	9091000
CY2017Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	8870000
CY2018Q4	diod	Other Liability Noncurrent OtherLiabilityNoncurrent	3794000
CY2017Q4	diod	Other Liability Noncurrent OtherLiabilityNoncurrent	1924000
CY2018	us-gaap	Other Restrictions On Payment Of Dividends OtherRestrictionsOnPaymentOfDividends	Our U.S. Credit Facility permits us to pay dividends up to $3.0 million per fiscal year to its stockholders so long as we have not defaulted under the U.S. Credit Facility at the time of such dividend and no default would result from declaring or paying such dividend.
CY2018	diod	Maximum Annual Dividend Payable On Credit Facility Conditions MaximumAnnualDividendPayableOnCreditFacilityConditions	3000000
CY2018	us-gaap	Stock Repurchase Program Expiration Date StockRepurchaseProgramExpirationDate	2019-12-31
CY2018	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Remeasurement Of Us Deferred Tax Assets And Liabilities Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017RemeasurementOfUSDeferredTaxAssetsAndLiabilitiesProvisionalIncomeTaxExpenseBenefit	2913000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Transition Tax On Foreign Earnings Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017TransitionTaxOnForeignEarningsProvisionalIncomeTaxExpenseBenefit	104327000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Foreign Tax Credits Used To Offset Transition Tax To Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017ForeignTaxCreditsUsedToOffsetTransitionTaxToProvisionalIncomeTaxExpenseBenefit	58975000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Other Adjustments Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017OtherAdjustmentsProvisionalIncomeTaxExpenseBenefit	2357000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	45908000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Remeasurement Of Us Deferred Tax Assets And Liabilities To Income Tax Expense Benefit TaxCutsAndJobsActOf2017RemeasurementOfUSDeferredTaxAssetsAndLiabilitiesToIncomeTaxExpenseBenefit	3112000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Transition Tax On Foreign Earnings Income Tax Expense Benefit TaxCutsAndJobsActOf2017TransitionTaxOnForeignEarningsIncomeTaxExpenseBenefit	101512000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Foreign Tax Credits Used To Offset Transition Tax To Income Tax Expense Benefit TaxCutsAndJobsActOf2017ForeignTaxCreditsUsedToOffsetTransitionTaxToIncomeTaxExpenseBenefit	54350000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Other Adjustments Income Tax Expense Benefit TaxCutsAndJobsActOf2017OtherAdjustmentsIncomeTaxExpenseBenefit	1604000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	48670000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Remeasurement Of Us Deferred Tax Assets And Liabilities Adjustment Income Tax Expense Benefit TaxCutsAndJobsActOf2017RemeasurementOfUSDeferredTaxAssetsAndLiabilitiesAdjustmentIncomeTaxExpenseBenefit	199000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Transition Tax On Foreign Earnings Adjustment To Income Tax Expense Benefit TaxCutsAndJobsActOf2017TransitionTaxOnForeignEarningsAdjustmentToIncomeTaxExpenseBenefit	2815000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Foreign Tax Credits Used To Offset Transition Tax Adjustment To Income Tax Expense Benefit TaxCutsAndJobsActOf2017ForeignTaxCreditsUsedToOffsetTransitionTaxAdjustmentToIncomeTaxExpenseBenefit	4625000
CY2018Q4	diod	Tax Cuts And Jobs Act Of2017 Other Adjustments In Income Tax Expense Benefit TaxCutsAndJobsActOf2017OtherAdjustmentsInIncomeTaxExpenseBenefit	753000
CY2018	diod	Tax Cuts And Jobs Act Of2017 Other Adjustments In Income Tax Expense Benefit TaxCutsAndJobsActOf2017OtherAdjustmentsInIncomeTaxExpenseBenefit	800000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-24141000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-72668000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-40861000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	174103000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	135259000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	65896000
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	42726000
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	31820000
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	28993000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24000
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7000
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	13000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	42750000
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	31827000
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29006000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2400000
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	30186000
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-10517000
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3107000
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-2352000
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-13847000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	56000
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8000
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	101000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-651000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	27826000
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-24263000
CY2018	diod	Income Tax Liability For Unrecognized Tax Expense Benefit IncomeTaxLiabilityForUnrecognizedTaxExpenseBenefit	2457000
CY2017	diod	Income Tax Liability For Unrecognized Tax Expense Benefit IncomeTaxLiabilityForUnrecognizedTaxExpenseBenefit	2672000
CY2016	diod	Income Tax Liability For Unrecognized Tax Expense Benefit IncomeTaxLiabilityForUnrecognizedTaxExpenseBenefit	1815000
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	31488000
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21907000
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	8762000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-375000
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-15000
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-65000
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-2844000
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-23515000
CY2016	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-6955000
CY2018	diod	Income Tax Reconciliation Foreign Operations IncomeTaxReconciliationForeignOperations	4140000
CY2017	diod	Income Tax Reconciliation Foreign Operations IncomeTaxReconciliationForeignOperations	6726000
CY2016	diod	Income Tax Reconciliation Foreign Operations IncomeTaxReconciliationForeignOperations	324000
CY2018	diod	Income Tax Reconciliation Foreign Operations Foreign Withholding Taxes IncomeTaxReconciliationForeignOperationsForeignWithholdingTaxes	10962000
CY2017	diod	Income Tax Reconciliation Foreign Operations Foreign Withholding Taxes IncomeTaxReconciliationForeignOperationsForeignWithholdingTaxes	4343000
CY2016	diod	Income Tax Reconciliation Foreign Operations Foreign Withholding Taxes IncomeTaxReconciliationForeignOperationsForeignWithholdingTaxes	4834000
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	3541000
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2643000
CY2016	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2241000
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-379000
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2077000
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-2600000
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-2154000
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1537000
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	2762000
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	45908000
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2040000
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	3328000
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2684000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.003
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.003
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.019
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.376
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.278
CY2018	diod	Effective Income Tax Rate Reconciliation Foreign Operations EffectiveIncomeTaxRateReconciliationForeignOperations	0.028
CY2017	diod	Effective Income Tax Rate Reconciliation Foreign Operations EffectiveIncomeTaxRateReconciliationForeignOperations	0.107
CY2016	diod	Effective Income Tax Rate Reconciliation Foreign Operations EffectiveIncomeTaxRateReconciliationForeignOperations	0.013
CY2018	diod	Effective Income Tax Rate Reconciliation Foreign Withholding Taxes EffectiveIncomeTaxRateReconciliationForeignWithholdingTaxes	0.073
CY2017	diod	Effective Income Tax Rate Reconciliation Foreign Withholding Taxes EffectiveIncomeTaxRateReconciliationForeignWithholdingTaxes	0.069
CY2016	diod	Effective Income Tax Rate Reconciliation Foreign Withholding Taxes EffectiveIncomeTaxRateReconciliationForeignWithholdingTaxes	0.193
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.024
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.042
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.090
CY2018	diod	Effective Income Tax Rate Reconciliation Unrecognized Tax Expenses Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxExpensesBenefits	0.016
CY2017	diod	Effective Income Tax Rate Reconciliation Unrecognized Tax Expenses Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxExpensesBenefits	0.043
CY2016	diod	Effective Income Tax Rate Reconciliation Unrecognized Tax Expenses Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxExpensesBenefits	0.073
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.003
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.033
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.104
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.014
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.025
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.018
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.734
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.014
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.053
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.107
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.297
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.996
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.262
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	30581000
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	28849000
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	4667000
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3492000
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6746000
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	863000
CY2018Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	7974000
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	960000
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	3039000
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2623000
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	5360000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	32209000
CY2018	us-gaap	Significant Change In Unrecognized Tax Benefits Nature Of Event SignificantChangeInUnrecognizedTaxBenefitsNatureOfEvent	It is reasonably possible that the amount of the unrecognized benefit with respect to certain of our unrecognized tax positions will significantly increase or decrease within the next 12 months.
CY2018	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Estimated Range Not Possible SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeNotPossible	These changes may be the result of settlements of ongoing audits or competent authority proceedings. At this time, an estimate of the range of the reasonably possible outcomes cannot be made.
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	28800000
CY2018	us-gaap	Income Tax Examination Description IncomeTaxExaminationDescription	We file income tax returns in the U.S. federal jurisdiction and in various state and foreign jurisdictions. We are no longer subject to U.S. federal income tax examinations by tax authorities for tax years before 2008, or for the 2010 and 2011 tax years. We are no longer subject to China income tax examinations by tax authorities for tax years before 2007. With respect to state and local jurisdictions and countries outside of the U.S., with limited exceptions, we are no longer subject to income tax audits for years before 2013. Although the outcome of tax audits is always uncertain, we believe that adequate amounts of tax, interest and penalties, if any, have been provided for in our reserve for any adjustments that may result from future tax audits. We recognize accrued interest and penalties, if any, related to unrecognized tax benefits in interest expense. We had an immaterial amount of accrued interest and penalties at December 31, 2018, 2017 and 2016.
CY2017Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	8000000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1866000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	690000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	17600000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	10626000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	15456000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	15828000
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	9635000
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	5392000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	4294000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	5428000
CY2018Q4	diod	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost Non Current DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCostNonCurrent	9972000
CY2017Q4	diod	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost Non Current DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCostNonCurrent	12443000
CY2018Q4	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	66797000
CY2017Q4	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	58407000
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance Noncurrent DeferredTaxAssetsValuationAllowanceNoncurrent	25941000
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance Noncurrent DeferredTaxAssetsValuationAllowanceNoncurrent	22560000
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	40856000
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	35847000
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	16661000
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17278000
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	7267000
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	23928000
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	17278000
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	16928000
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	18569000
CY2018Q4	us-gaap	Tax Credit Carryforward Valuation Allowance TaxCreditCarryforwardValuationAllowance	19000000
CY2017Q4	us-gaap	Tax Credit Carryforward Valuation Allowance TaxCreditCarryforwardValuationAllowance	13000000
CY2018Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	7000000
CY2017Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	5000000
CY2018Q4	us-gaap	Statutory Accounting Practices Retained Earnings Not Available For Dividends StatutoryAccountingPracticesRetainedEarningsNotAvailableForDividends	55000
CY2018Q4	diod	Additional Tax On Undistributed Foreign Earnings AdditionalTaxOnUndistributedForeignEarnings	37000
CY2018	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	1600000
CY2017	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	3700000
CY2016	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	7300000
CY2018	diod	Income Tax Holiday Income Tax Benefits Per Share Basic IncomeTaxHolidayIncomeTaxBenefitsPerShareBasic	0.0
CY2017	diod	Income Tax Holiday Income Tax Benefits Per Share Basic IncomeTaxHolidayIncomeTaxBenefitsPerShareBasic	0.08
CY2016	diod	Income Tax Holiday Income Tax Benefits Per Share Basic IncomeTaxHolidayIncomeTaxBenefitsPerShareBasic	0.15
CY2018	diod	Income Tax Holiday Income Tax Benefits Per Share Diluted IncomeTaxHolidayIncomeTaxBenefitsPerShareDiluted	0.03
CY2017	diod	Income Tax Holiday Income Tax Benefits Per Share Diluted IncomeTaxHolidayIncomeTaxBenefitsPerShareDiluted	0.08
CY2016	diod	Income Tax Holiday Income Tax Benefits Per Share Diluted IncomeTaxHolidayIncomeTaxBenefitsPerShareDiluted	0.15
CY2018	diod	Defined Benefit Plan Amortization Of Net Gains Losses Average Term DefinedBenefitPlanAmortizationOfNetGainsLossesAverageTerm	P11Y6M
CY2018Q4	diod	Defined Benefit Plan Equalization Benefit Interest Percentage On Base Rate DefinedBenefitPlanEqualizationBenefitInterestPercentageOnBaseRate	0.01
CY2018Q4	diod	Defined Benefit Plan Equalization Amount DefinedBenefitPlanEqualizationAmount	500000
CY2018Q4	diod	Defined Benefit Plan Equalization Amount DefinedBenefitPlanEqualizationAmount	600000
CY2018Q4	us-gaap	Foreign Currency Exchange Rate Translation1 ForeignCurrencyExchangeRateTranslation1	1.27
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	267000
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	258000
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4151000
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4228000
CY2018	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-2625000
CY2017	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1325000
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	7339000
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	6506000
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-296000
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-695000
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	23900000
CY2018	diod	Defined Benefit Plan Recognized Gain Loss Increase Decrease DefinedBenefitPlanRecognizedGainLossIncreaseDecrease	-3400000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	9200000
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.064
CY2018Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.00
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	3763000
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	4120000
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	4586000
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	4959000
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	5307000
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	24069000
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	117162000
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	14800000
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	13900000
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18609000
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	14029000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Method Used ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsed	Share-based compensation expense for stock options granted in previous years was calculated on the date of grant using the Black-Scholes-Merton option-pricing model
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	100000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	988000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	988000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.03
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.48
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	22.75
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.08
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	23.42
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	26.87
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.85
CY2018	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred	1900000
CY2018Q4	diod	Derivatives Net Assets Position Aggregate Fair Value DerivativesNetAssetsPositionAggregateFairValue	4700000
CY2017Q4	diod	Derivatives Net Assets Position Aggregate Fair Value DerivativesNetAssetsPositionAggregateFairValue	3900000
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	20.28
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.47
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	23.47
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y4M24D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y4M24D
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	8693000
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	8693000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2679000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	880000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	877000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	62000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2620000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	746000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	645000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	441000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2280000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	646000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1213000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	46000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1667000
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	23.51
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	18.63
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	18.92
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	20.80
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	21.31
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	25.23
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	21.89
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	22.31
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	22.24
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	32.06
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	21.39
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	24.72
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	26.68
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Nonvested SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested	53396000
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	401988000
CY2016Q4	us-gaap	Assets Assets	1528552000
CY2018	diod	Sales Revenue Net Percentage SalesRevenueNetPercentage	1.00
CY2017	diod	Sales Revenue Net Percentage SalesRevenueNetPercentage	1.00
CY2016	diod	Sales Revenue Net Percentage SalesRevenueNetPercentage	1.00
CY2018	diod	Customer Concentration Number Of Customers CustomerConcentrationNumberOfCustomers	1
CY2017	diod	Customer Concentration Number Of Customers CustomerConcentrationNumberOfCustomers	1
CY2016	diod	Customer Concentration Number Of Customers Did Not Equal Ten Percent Or Greater Of Accounts Receivable CustomerConcentrationNumberOfCustomersDidNotEqualTenPercentOrGreaterOfAccountsReceivable	0
CY2018	diod	Customer Concentration Number Of Customers Did Not Equal Ten Percent Or Greater Of Revenue CustomerConcentrationNumberOfCustomersDidNotEqualTenPercentOrGreaterOfRevenue	0
CY2017	diod	Customer Concentration Number Of Customers Did Not Equal Ten Percent Or Greater Of Revenue CustomerConcentrationNumberOfCustomersDidNotEqualTenPercentOrGreaterOfRevenue	0
CY2018	us-gaap	Lease Expiration Date1 LeaseExpirationDate1	2028-12-31
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	10300000
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	10400000
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	10500000
CY2018Q4	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	9200000
CY2018	us-gaap	Long Term Purchase Commitment Amount LongTermPurchaseCommitmentAmount	117800000
CY2018	us-gaap	Objectives For Using Derivative Instruments ObjectivesForUsingDerivativeInstruments	The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps, including interest rate collars, as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.
CY2018Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0
CY2017Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	274512000
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	304085000
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	320946000
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	314446000
CY2018Q1	us-gaap	Gross Profit GrossProfit	98595000
CY2018Q2	us-gaap	Gross Profit GrossProfit	107268000
CY2018Q3	us-gaap	Gross Profit GrossProfit	115214000
CY2018Q4	us-gaap	Gross Profit GrossProfit	114199000
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	18526000
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	25068000
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	30908000
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	29519000
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.38
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2017Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	236303000
CY2017Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	264224000
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	285247000
CY2017Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	268430000
CY2017Q1	us-gaap	Gross Profit GrossProfit	73911000
CY2017Q2	us-gaap	Gross Profit GrossProfit	90139000
CY2017Q3	us-gaap	Gross Profit GrossProfit	96347000
CY2017Q4	us-gaap	Gross Profit GrossProfit	96379000
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	1217000
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	13179000
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	14450000
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	-30651000
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.62
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.62

Files In Submission

Name	View Source	Status
0001564590-19-003715-index-headers.html	Edgar Link	pending
0001564590-19-003715-index.html	Edgar Link	pending
0001564590-19-003715.txt	Edgar Link	pending
0001564590-19-003715-xbrl.zip	Edgar Link	pending
diod-10k_20181231.htm	Edgar Link	pending
diod-20181231.xml	Edgar Link	completed
diod-20181231.xsd	Edgar Link	pending
diod-20181231_cal.xml	Edgar Link	unprocessable
diod-20181231_def.xml	Edgar Link	unprocessable
diod-20181231_lab.xml	Edgar Link	unprocessable
diod-20181231_pre.xml	Edgar Link	unprocessable
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$DIOD
DIODES INC /DEL/ Stock $diod

2018 Q4 Form 10-K Financial Statement

#000156459019003715 Filed on February 21, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DIOD DIODES INC /DEL/ Stock $diod

2018 Q4 Form 10-K Financial Statement

#000156459019003715 Filed on February 21, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DIOD
DIODES INC /DEL/ Stock $diod