Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended
	Jan. 22, 2016	Dec. 10, 2015	Mar. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Proceeds from insurance settlement			$ 29,600
Insurance proceeds in restricted cash reclassified from other receivables			$ 29,571
Other Receivables [Member]
Loss Contingencies [Line Items]
Insurance receivable				$ 29,600
Accrued Expense [Member]
Loss Contingencies [Line Items]
Accrued claim settlement				$ 23,500
Thomas, et al. v. MagnaChip Semiconductor Corp. et al. [Member]
Loss Contingencies [Line Items]
Damages sought, value		$ 23,500
Shareholder Derivative Actions [Member]
Loss Contingencies [Line Items]
Proceeds from insurance settlement	$ 3,000