Debt - Borrowings Pursuant to Term Loan and Security Agreements - Additional Information (Details) $ in Thousands, ₩ in Millions			1 Months Ended																									3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 12, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jul. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	May 31, 2025 USD ($)	Apr. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Feb. 28, 2025	Jan. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Nov. 30, 2024 USD ($)	Oct. 31, 2024	Sep. 30, 2024	Jul. 31, 2024 USD ($)	Jul. 31, 2024 KRW (₩)	Jun. 30, 2024 USD ($)	May 31, 2024	Apr. 30, 2024 USD ($)	Apr. 30, 2024 KRW (₩)	Mar. 31, 2024 USD ($)	Mar. 31, 2024 KRW (₩)	Dec. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	May 31, 2022 USD ($)	Apr. 30, 2022 USD ($)	Jan. 31, 2017 USD ($)	Jul. 31, 2016 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 KRW (₩)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 KRW (₩)	Dec. 31, 2017 USD ($)	Aug. 12, 2025 KRW (₩)	Jul. 31, 2025 KRW (₩)	Apr. 30, 2025 KRW (₩)	Mar. 31, 2025 KRW (₩)	Jan. 31, 2025 KRW (₩)	Dec. 31, 2024 KRW (₩)	Nov. 30, 2024 KRW (₩)	Jul. 31, 2024 KRW (₩)	Dec. 31, 2023 KRW (₩)	Dec. 31, 2022 KRW (₩)	Sep. 30, 2022 KRW (₩)	May 31, 2022 KRW (₩)	Apr. 30, 2022 KRW (₩)	Dec. 31, 2021 KRW (₩)	Oct. 31, 2021 USD ($)	Oct. 31, 2021 KRW (₩)	Dec. 31, 2017 KRW (₩)	Jan. 31, 2017 KRW (₩)	Jul. 31, 2016 KRW (₩)
Borrowings
Amount outstanding		$ 51,675		$ 51,675						$ 42,626																				$ 51,675
Amount repaid																														2,212	$ 7,853
Borrowings
Borrowings
Amount outstanding		46,675		46,675																										46,675
KEB Hana Bank | Borrowings
Borrowings
Principal amount						$ 700								$ 6,000													$ 6,700											₩ 1,000.0					₩ 8,000.0											₩ 9,000.0
Annual interest rate (as a percent)						3.10%								4.90%																								3.10%					4.90%
Annual interest rate																											2.60%
Additional extension term (in years)																																			1 year
Principal amount of loan extended maturity date																		$ 700	₩ 1,000.0
Debt instrument, maturity date						2026-04								2025-07	2025-07			2025-04	2025-04								2017-07								2024-07
Amount outstanding		$ 6,635		6,635						6,122																				6,635
KEB Hana Bank | Borrowings | Subsequent Event
Borrowings
Principal amount			$ 5,900																																		₩ 8,000.0
Annual interest rate (as a percent)			4.00%																																		4.00%
Debt instrument, maturity date			2026-07
KEB Hana Bank | Borrowings | Minimum
Borrowings
Annual interest rate		3.10%
KEB Hana Bank | Borrowings | Maximum
Borrowings
Annual interest rate		4.90%
IBK Industrial Bank | Borrowings
Borrowings
Principal amount																										$ 6,800																											₩ 9,200.0
Annual interest rate (as a percent)																		3.50%	3.50%							4.10%																											4.10%
Debt instrument, maturity date																										2025-11
Amount outstanding		$ 6,783		$ 6,783						6,259																				$ 6,783
IBK Industrial Bank | Borrowings | Minimum
Borrowings
Annual interest rate (as a percent)		4.10%		4.10%																										4.10%
IBK Industrial Bank | Borrowings | Maximum
Borrowings
Annual interest rate (as a percent)		4.00%		4.00%																										4.00%
M-Venture Investment, Inc. | Term loan and security agreement, one
Borrowings
Principal amount																																																		$ 3,700	₩ 5,000.0
Annual interest rate (as a percent)		6.50%		6.50%																										6.50%
Amount outstanding																																	$ 3,000												₩ 4,000.0
Amount repaid																		$ 1,500	₩ 2,000.0									$ 400	₩ 600.0				300	₩ 400.0
M-Venture Investment, Inc. | Term loan and security agreement, two, draw one
Borrowings
Principal amount																									$ 700																							₩ 1,000.0
Annual interest rate (as a percent)		6.50%		6.50%																										6.50%
Principal amount of loan extended maturity date																		700	1,000.0
Debt instrument, maturity date																2024-06									2024-04
M-Venture Investment, Inc. | Term loan and security agreement, two, draw two
Borrowings
Principal amount																									$ 3,700																							₩ 5,000.0
Annual interest rate (as a percent)		8.70%		8.70%																										8.70%
Principal amount of loan extended maturity date																		$ 3,700	₩ 5,000.0
Debt instrument, maturity date														2024-07	2024-07										2024-04
M-Venture Investment, Inc. | Term loans
Borrowings
Repayment of short term loan														$ 700	₩ 1,000.0
Mujin Electronics Co., Ltd. | Borrowings
Borrowings
Amount outstanding		$ 3,686		$ 3,686						3,401																				$ 3,686
Mujin Electronics Co., Ltd. | Term loan and security agreement, one
Borrowings
Principal amount														$ 3,700																													₩ 5,000.0
Annual interest rate (as a percent)		6.80%		6.80%																										6.80%
Debt instrument, maturity date				2025-10								2025-06		2025-01	2025-01
Anapass, Inc, related party | Borrowings
Borrowings
Amount outstanding		$ 16,588		$ 16,588						12,245																				$ 16,588
Anapass, Inc, related party | Term loan and security agreement, one
Borrowings
Principal amount							$ 3,100			$ 3,400																	$ 4,500												₩ 4,500.0		₩ 5,000.0													₩ 6,000.0
Annual interest rate (as a percent)							6.50%			6.50%																	5.50%												6.50%		6.50%													5.50%
Debt instrument, maturity date					2025-11		2026-03			2025-12			2025-09	2025-07	2025-07		2025-05						2024-09	2024-05			2024-07
Maturity date description																														In March 2025, the Company entered into a term loan agreement with Anapass, Inc. pursuant to which the Company borrowed KRW 4.5 billion ($3.1 million). The term loan has a maturity date in March 2026 and bears an annual interest rate of 6.5%.In July 2025, the Company entered into a term loan agreement with Anapass, Inc. pursuant to which the Company borrowed KRW 3.0 billion ($2.2 million). The term loan has a maturity date in July 2026 and bears an annual interest rate of 6.5%
Anapass, Inc, related party | Term loan and security agreement, one | Subsequent Event
Borrowings
Principal amount	$ 1,500		$ 2,200																																	₩ 2,000.0	₩ 3,000.0
Annual interest rate (as a percent)	6.50%		6.50%																																	6.50%	6.50%
Debt instrument, maturity date	2026-08		2026-07
Anapass, Inc, related party | Term loan and security agreement, two
Borrowings
Annual interest rate (as a percent)													5.50%
Anapass, Inc, related party | Term loan and security agreement, two, draw one
Borrowings
Principal amount																								$ 2,200																							₩ 3,000.0
Anapass, Inc, related party | Term loan and security agreement, two, draw two
Borrowings
Principal amount																							$ 3,000																							₩ 4,000.0
i Best Investment Co., Ltd | Borrowings
Borrowings
Principal amount																						$ 10,300										$ 10,300	$ 10,300											₩ 14,000.0	₩ 14,000.0
Annual interest rate (as a percent)																						6.50%										6.50%	6.50%											6.50%	6.50%
Debt instrument, maturity date				2025-12	2025-06			2025-05				2025-02																				2024-06	2024-06	2024-06
Amount outstanding		2,212		$ 2,212						$ 4,082																				$ 2,212
i Best Investment Co., Ltd | Term loan and security agreement, one
Borrowings
Amount repaid				700
i Best Investment Co., Ltd | Term loan and security agreement, one | Subsequent Event
Borrowings
Principal amount			$ 2,200
i Best Investment Co., Ltd | Term loan and security agreement, draw two
Borrowings
Amount repaid																						$ 800
i Best Investment Co., Ltd | Term loan and security agreement, draw three
Borrowings
Amount repaid																$ 1,400
i Best Investment Co., Ltd | Term loan and security agreement, draw four
Borrowings
Amount repaid																				$ 2,300
i Best Investment Co., Ltd | Term loan and security agreement, draw fifth and sixth
Borrowings
Amount repaid					$ 1,500
Kyeongho Lee | Borrowings
Borrowings
Amount outstanding		$ 10,771		$ 10,771						5,517																				$ 10,771
Kyeongho Lee | Term loan and security agreement, one
Borrowings
Principal amount										700																															₩ 1,000.0
Kyeongho Lee | Term loan and security agreement, two
Borrowings
Principal amount										$ 1,400																															₩ 2,000.0
Debt instrument, maturity date										2025-01	2024-12
Kyeongho Lee | Promissory notes
Borrowings
Principal amount																												$ 400							$ 400														₩ 500.0			₩ 500.0
Debt instrument, maturity date											2025-11						2024-11			2024-05	2024-05														2024-11
Kyeongho Lee | Promissory notes | Minimum
Borrowings
Annual interest rate (as a percent)																												7.50%							7.50%														7.50%			7.50%
Kyeongho Lee | Promissory notes | Maximum
Borrowings
Annual interest rate (as a percent)																												9.00%							9.00%														9.00%			9.00%
Kyeongho Lee | Term loans
Borrowings
Principal amount									$ 4,400		$ 2,900																	$ 100							$ 700					₩ 6,500.0		₩ 4,000.0							₩ 110.0			₩ 1,000.0
Annual interest rate (as a percent)									12.00%	12.00%	12.00%																													12.00%	12.00%	12.00%
Debt instrument, maturity date					2025-08						2025-05																								2024-11
Amount repaid																				$ 700	₩ 1,000.0
Percentage of penalty incurred on principal									3.00%