SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Long-Lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Total	$ 821,573	$ 627,689
China
Total	477,681	332,506
U.S.
Total	204,495	165,107
Taiwan
Total	69,721	65,081
Other
Total	$ 69,676	$ 64,995

Amount of long-lived asset, excluding financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant