Commitments and Contingencies - Additional Information (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Commitments And Contingencies [Line Items]
Purchase Commitments	$ 12,000,000
Stockholder Derivative Action 1
Commitments And Contingencies [Line Items]
Loss Contingency, Name of Defendant	Keh-Shew Lu
Loss Contingency, Lawsuit Filing Date	Mar. 5, 2013
Loss Contingency, Name of Plaintiff	Scherer
Attorneys' fees	$ 1,245,045
Putative Securities Class Action
Commitments And Contingencies [Line Items]
Loss Contingency, Name of Defendant	Diodes, Inc.
Loss Contingency, Lawsuit Filing Date	Mar. 15, 2013
Loss Contingency, Name of Plaintiff	Local 731 I.B. of T. Excavators and Pavers Pension Trust Fund
Stockholder Derivative Action 2
Commitments And Contingencies [Line Items]
Loss Contingency, Name of Defendant	Keh-Shew Lu
Loss Contingency, Lawsuit Filing Date	Feb. 20, 2014
Loss Contingency, Name of Plaintiff	Persson
Loss Contingency, Allegations	on behalf of the Company against its directors, in which plaintiff alleges that the directors breached their fiduciary duties by allowing the Company to make allegedly misleading public statements in 2011 regarding the labor market in China and its impact on the Company’s business and prospects, by failing to maintain internal controls and by selling shares of Diodes stock while allegedly in possession of material nonpublic information regarding the labor market in China and its impact on the Company’s business and prospects.