Defined Severance Benefits - Schedule of Defined Benefits Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined benefit obligation, beginning balance	$ 164,573	$ 87,206
Current service costs	120,784	70,019	$ 42,097
Interest expense	2,869	1,310	1,061
Actuarial losses arising from experience adjustments, demographic assumptions, and changes in financial assumptions	52,528	18,005
Payments from plans	(49,712)	(23,159)
Plan changes/amendments	10,263	0
Cumulative effects of foreign currency translation	(18,273)	11,192
Defined benefit obligation, ending balance	$ 283,032	$ 164,573	$ 87,206