Customer concentration number of customers.

No definition available.

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- Definition

Customer concentration number of customers did not equal ten percent or greater of accounts receivable.

+ References

No definition available.

+ Details

Name:	diod_CustomerConcentrationNumberOfCustomersDidNotEqualTenPercentOrGreaterOfAccountsReceivable
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- Definition

Revenue percentage by country derived from billed to customer location.

+ References

No definition available.

+ Details

Name:	diod_SalesRevenueNetPercentage
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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_EntityWideRevenueMajorCustomerLineItems
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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Balance Type:
Period Type:

Segment Information, Revenue and Enterprise-Wide Disclosures - Additional Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 USD ($) Customer	Dec. 31, 2017 USD ($) Customer
Entity Wide Revenue Major Customer [Line Items]
Number of customer accounted for 10.0% or $119.6 million, $120.0 million and $101.7 million of revenue \| Customer									1	1	1
Percentage of net sales									100.00%	100.00%	100.00%
Concentration risk, revenue amount \| $	$ 301,157	$ 323,674	$ 322,006	$ 302,293	$ 314,446	$ 320,946	$ 304,085	$ 274,512	$ 1,249,130	$ 1,213,989	$ 1,054,204
Number of customer did not account for 10% or greater of outstanding accounts receivable \| Customer									0	0
Geographic Concentration Risk
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales									10.00%	10.00%	10.00%
Concentration risk, revenue amount \| $									$ 119,600	$ 120,000	$ 101,700