Subsequent Event - Additional Information (Details) - Subsequent Event - KFAB Wafer Manufacturing Operations $ in Millions	Feb. 14, 2017 USD ($)
Subsequent Event [Line Items]
Restructuring activities description	In light of the landlord’s decision not to renew the KFAB lease when the current term expires, on February 14 we announced we had begun activities to transfer the KFAB wafer manufacturing operations to other Diodes’ wafer fabrication plants and external foundries. We expect to cease operations at KFAB late in third quarter 2017 and to vacate the premises no later than November 15, 2017.
Employee Retention and Severance
Subsequent Event [Line Items]
Expenses to be incurred include cash costs	$ 4.0
Contract Termination Costs
Subsequent Event [Line Items]
Expenses to be incurred include cash costs	2.0
Equipment and Building Decommissioning Costs
Subsequent Event [Line Items]
Expenses to be incurred include cash costs	2.0
Non-Cash Costs of Equipment Impairment
Subsequent Event [Line Items]
Expenses to be incurred include cash costs	2.0
Inventory Write-Off
Subsequent Event [Line Items]
Expenses to be incurred include cash costs	1.0
Minimum
Subsequent Event [Line Items]
Expected shutdown costs	10.0
Maximum
Subsequent Event [Line Items]
Expected shutdown costs	$ 12.0