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Long-Term Borrowings - Additional Information (Detail) ₩ in Thousands, $ in Thousands	Sep. 30, 2025 USD ($)	Mar. 26, 2024 KRW (₩)	Dec. 31, 2024	Dec. 16, 2024 KRW (₩)	Dec. 16, 2024 USD ($)	Mar. 26, 2024 USD ($)
Schedule of Capitalization, Long-Term Debt [Line Items]
Loan, held-in-portfolio, principal outstanding, total	$ 28,527
Foreign currency exchange rate, translation	1,402.2		1,470
Capex Loans [Member]
Schedule of Capitalization, Long-Term Debt [Line Items]
Loan, held-in-portfolio, principal outstanding, total	$ 10,408
Debt instrument, maturity date	Jun. 26, 2035
Debt instrument, interest rate, effective percentage	2.66%
Capex Loans [Member] | Korea (South), Won
Schedule of Capitalization, Long-Term Debt [Line Items]
Debt instrument, face amount | ₩				₩ 38,000,000,000
Working Capital Term Loan [Member]
Schedule of Capitalization, Long-Term Debt [Line Items]
Debt instrument, maturity date		Mar. 26, 2027
Debt instrument, interest rate, effective percentage		4.86%				4.86%
Foreign currency exchange rate, translation		1,340.7		1,432.7	1,432.7	1,340.7
Debt instrument, face amount					$ 26,523	$ 29,835
Working Capital Term Loan [Member] | Korea (South), Won
Schedule of Capitalization, Long-Term Debt [Line Items]
Debt instrument, basis spread on variable rate		1.21%
Debt instrument, face amount | ₩		₩ 40,000,000,000

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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