Commitments and Contingencies - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments And Contingencies [Line Items]
Lease Expiration Date	Dec. 31, 2020
Operating Leases, Rent Expense, Net	$ 10	$ 9	$ 7
Purchase Commitments	35
Stockholder Derivative Action
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
Amount the defendants agreed to pay	$ 1.1
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
Tag Along Stockholder Derivative Action
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 Board 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.
Number of days given to extend stay of an action after either expiration of an appeal period or a final decision	30 days
Chengdu, China
Commitments And Contingencies [Line Items]
Land right lease term	50 years
Land Right Lease, Expiration Year	2061
Shanghai, China
Commitments And Contingencies [Line Items]
Land right lease term	50 years
Land Right Lease, Expiration Year	2056