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Segment Information and Enterprise-Wide Disclosure - Schedule of Net Sales by Countries (Parenthetical) (Details)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Revenue Reconciling Item [Line Items]    
Percentage of net sales 100.00%diod_SalesRevenueNetPercentage 100.00%diod_SalesRevenueNetPercentage
All Others    
Segment Reporting Revenue Reconciling Item [Line Items]    
Percentage of net sales 7.00%diod_SalesRevenueNetPercentage
/ us-gaap_StatementGeographicalAxis
= diod_AllOthersMember
[1] 5.00%diod_SalesRevenueNetPercentage
/ us-gaap_StatementGeographicalAxis
= diod_AllOthersMember
[1]
All Others | Maximum    
Segment Reporting Revenue Reconciling Item [Line Items]    
Percentage of net sales 3.00%diod_SalesRevenueNetPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementGeographicalAxis
= diod_AllOthersMember
3.00%diod_SalesRevenueNetPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementGeographicalAxis
= diod_AllOthersMember
[1] Represents countries with less than 3% of the total net sales each.