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Restructuring Costs - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Restructuring Cost And Reserve [Line Items]      
Assets impairement related to KFAB shut-down   $ 390 $ 2,211
KFAB Wafer Manufacturing Operations      
Restructuring Cost And Reserve [Line Items]      
Restructuring activities description In February 2017, the Company announced its plan to transfer its wafer fabrication operation at KFAB to other Company-owned wafer fabrication plants and external foundries. The Company ceased production operations at KFAB late in third quarter 2017, and vacated and returned the premises to the landlord in November 2017.    
Proceeds from insurance settlement   3,700 6,500
Assets impairement related to KFAB shut-down     1,900
Additional asset retirement obligations related to restructuring     1,403
KFAB Wafer Manufacturing Operations | Cost of Goods Sold      
Restructuring Cost And Reserve [Line Items]      
Proceeds from insurance settlement     4,500
KFAB Wafer Manufacturing Operations | Other Income      
Restructuring Cost And Reserve [Line Items]      
Proceeds from insurance settlement   $ 3,700 $ 2,000