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Lines of Credit and Term Loans - Summary of Activities Under Short-term and Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024
Secured debt | Bridge Term Loan Facility | Term Loan
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 0
Secured debt | Chang Hwa Bank Credit Facility due October 15, 2026 | Term Loan
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 0
Interest rate	2.08%	1.68%
Secured debt | CTBC Term Loan Facility, due June 4, 2030 | Term Loan
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 0
Interest rate		1.33%
Secured debt | CTBC Term Loan Facility, due June 4, 2030 | Minimum | Term Loan
Short-term Debt [Line Items]
Interest rate	1.33%
Secured debt | CTBC Term Loan Facility, due June 4, 2030 | Maximum | Term Loan
Short-term Debt [Line Items]
Interest rate	1.83%
Secured debt | CTBC Term Loan Facility, due August 15, 2026 | Term Loan
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 0
Interest rate		1.53%
Secured debt | CTBC Term Loan Facility, due August 15, 2026 | Minimum | Term Loan
Short-term Debt [Line Items]
Interest rate	1.53%
Secured debt | CTBC Term Loan Facility, due August 15, 2026 | Maximum | Term Loan
Short-term Debt [Line Items]
Interest rate	2.03%
Secured debt | E.SUN Bank Term Loan Facility, due September 15, 2026 | Term Loan
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 0
Interest rate	2.22%	1.87%
Secured debt | E.SUN Bank Term Loan Facility, due August 15, 2027 | Term Loan
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 0
Interest rate	1.92%	1.87%
Secured debt | Mega Bank Term Loan Facility, due October 3, 2026 | Term Loan
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 0
Secured debt | Mega Bank Term Loan Facility, due October 3, 2026 | Minimum | Term Loan
Short-term Debt [Line Items]
Interest rate	2.02%	1.52%
Secured debt | Mega Bank Term Loan Facility, due October 3, 2026 | Maximum | Term Loan
Short-term Debt [Line Items]
Interest rate		1.72%
Line of credit | Revolving Credit Facility | 2018 Bank of America Credit Facility
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 350,000
Interest rate	0.00%	6.82%
Line of credit | Revolving Credit Facility | 2022 Bank of America Credit Facility
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 20,000
Interest rate	0.00%	6.49%
Line of credit | Revolving Credit Facility | Cathay Bank Line of Credit
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 132,000
Interest rate	0.00%	7.33%
Line of credit | Revolving Credit Facility | CTBC Credit Lines
Short-term Debt [Line Items]
Available borrowings	$ 185,000	$ 427
Line of credit | Revolving Credit Facility | CTBC Credit Lines | Minimum
Short-term Debt [Line Items]
Interest rate	2.63%	2.09%
Line of credit | Revolving Credit Facility | CTBC Credit Lines | Maximum
Short-term Debt [Line Items]
Interest rate	5.79%	6.13%
Line of credit | Revolving Credit Facility | Chang Hwa Bank Credit Lines
Short-term Debt [Line Items]
Available borrowings	$ 30,259	$ 20,000
Line of credit | Revolving Credit Facility | Chang Hwa Bank Credit Lines | Minimum
Short-term Debt [Line Items]
Interest rate	1.88%	1.88%
Line of credit | Revolving Credit Facility | Chang Hwa Bank Credit Lines | Maximum
Short-term Debt [Line Items]
Interest rate	5.16%	6.33%
Line of credit | Revolving Credit Facility | HSBC Bank Credit Lines
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 20,000
Line of credit | Revolving Credit Facility | HSBC Bank Credit Lines | Minimum
Short-term Debt [Line Items]
Interest rate	0.00%	2.03%
Line of credit | Revolving Credit Facility | HSBC Bank Credit Lines | Maximum
Short-term Debt [Line Items]
Interest rate	0.00%	6.28%
Line of credit | Revolving Credit Facility | E.SUN Bank Credit Lines
Short-term Debt [Line Items]
Available borrowings	$ 30,000	$ 0
Line of credit | Revolving Credit Facility | E.SUN Bank Credit Lines | Minimum
Short-term Debt [Line Items]
Interest rate	2.02%	2.02%
Line of credit | Revolving Credit Facility | E.SUN Bank Credit Lines | Maximum
Short-term Debt [Line Items]
Interest rate	5.12%	6.17%
Line of credit | Revolving Credit Facility | Mega Bank Credit Lines
Short-term Debt [Line Items]
Available borrowings	$ 50,000	$ 0
Line of credit | Revolving Credit Facility | Mega Bank Credit Lines | Minimum
Short-term Debt [Line Items]
Interest rate	1.90%	1.90%
Line of credit | Revolving Credit Facility | Mega Bank Credit Lines | Maximum
Short-term Debt [Line Items]
Interest rate	5.26%	5.80%
Line of credit | Revolving Credit Facility | First Bank Credit Lines
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 1,916
Line of credit | Revolving Credit Facility | First Bank Credit Lines | Minimum
Short-term Debt [Line Items]
Interest rate	0.00%	2.03%
Line of credit | Revolving Credit Facility | First Bank Credit Lines | Maximum
Short-term Debt [Line Items]
Interest rate	0.00%	6.19%
Line of credit | Revolving Credit Facility | Yuanta Bank Credit Lines
Short-term Debt [Line Items]
Available borrowings	$ 0	$ 47,610
Line of credit | Revolving Credit Facility | Yuanta Bank Credit Lines | Minimum
Short-term Debt [Line Items]
Interest rate	0.00%	2.32%
Line of credit | Revolving Credit Facility | Yuanta Bank Credit Lines | Maximum
Short-term Debt [Line Items]
Interest rate	0.00%	6.33%

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