Discontinued Operations and Assets Held for Sale - Schedule Of Results From Discontinued Operations Balance Sheet (Detail) $ in Thousands	Dec. 31, 2019 USD ($)
Current assets
Total current assets held for sale	$ 99,821
Current liabilities
Total current liabilities held for sale	37,040
Foundry Services Group And Fab Three Foundry Services [Member]
Current assets
Accounts receivable, net	48,194
Unbilled accounts receivable	16,463
Inventories, net	31,863
Other current assets	3,301
Total current assets held for sale	99,821
Property, plant and equipment, net	109,506
Intangible assets, net	1,245
Other non-current assets	12,683
Total assets held for sale	223,255
Current liabilities
Accounts payable	20,503
Other current liabilities	16,537
Total current liabilities held for sale	37,040
Accrued severance benefits, net	95,547
Other non-current liabilities	15,334
Total liabilities held for sale	$ 147,921