Income Taxes - Summary of Composition of Net Deferred Income Tax Assets (Liabilities) Of Continuing Operations and Discontinued Operations (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets
Inventory reserves	$ 2,519	$ 3,108
Accrued expenses	1,593	1,668
Property, plant and equipment	2,679	2,685
Accumulated severance benefits	9,927	10,269
Operating lease right-of-use liabilities	997	1,098
Foreign currency translation loss	19,049	22,272
NOL carry-forwards	96,361	78,698
Tax credit carry-forwards	14,372	13,337
Other long-term payable	2,242	4,005
Interest expense deduction limitation	3,610	91
Derivative liabilities	0	427
Others	1,191	1,394
Total deferred tax assets	154,540	139,052
Less: Valuation allowance	(87,201)	(84,563)	$ (94,212)	$ (115,636)
Deferred tax assets, net	67,339	54,489
Deferred tax liabilities
Prepaid expense	1,787	3,065
Severance benefit deposits	6,456	5,364
Operating lease right-of-use assets	960	1,051
Foreign currency translation gain	6,411	5,621
Others	892	1,064
Total deferred tax liabilities	16,506	16,165
Net deferred tax assets	$ 50,833	$ 38,324