Short-term and Long-term Debt - E.SUN Bank and Mega Bank Credit Facility Narrative (Details)	Sep. 13, 2021 USD ($)	Dec. 31, 2021 USD ($)	Sep. 13, 2021 TWD ($)	Jun. 30, 2021 USD ($)	Dec. 02, 2020 USD ($)
Short-term Debt [Line Items]
Short-term debt		$ 176,904,000		$ 63,490,000
Revolving Credit Facility | E.SUN Bank | E.SUN Bank | Line of Credit
Short-term Debt [Line Items]
Credit facility, maximum borrowing capacity	$ 57,600,000	$ 16,500,000	$ 1,600,000,000	$ 20,400,000	$ 30,000,000
Credit facility, term	120 days
Interest rate (as a percent)		0.96%
Credit facility, remaining borrowing capacity		$ 13,500,000
Revolving Credit Facility | E.SUN Bank | E.SUN Bank | Line of Credit | Minimum
Short-term Debt [Line Items]
Interest rate (as a percent)				1.00%
Revolving Credit Facility | E.SUN Bank | E.SUN Bank | Line of Credit | Maximum
Short-term Debt [Line Items]
Interest rate (as a percent)				1.29%
Revolving Credit Facility | E.SUN Bank | E.SUN Bank | Draw Down Instruments
Short-term Debt [Line Items]
Credit facility, maximum borrowing capacity	$ 30,000,000
Revolving Credit Facility | E.SUN Bank | E.SUN Bank | Import Loan
Short-term Debt [Line Items]
Credit facility, maximum borrowing capacity	30,000,000
Revolving Credit Facility | Mega Bank Credit Facility | Mega Bank | Line of Credit
Short-term Debt [Line Items]
Credit facility, maximum borrowing capacity	$ 43,200,000	$ 43,400,000	$ 1,200,000,000
Drawdowns percentage	80.00%
Revolving Credit Facility | Mega Bank Credit Facility | Mega Bank | Line of Credit | Minimum
Short-term Debt [Line Items]
Interest rate (as a percent)	0.645%	0.65%	0.645%
Revolving Credit Facility | Mega Bank Credit Facility | Mega Bank | Line of Credit | Maximum
Short-term Debt [Line Items]
Interest rate (as a percent)	0.845%	0.85%	0.845%
Secured debt | E.SUN Bank | Term loan
Short-term Debt [Line Items]
Short-term debt		$ 18,300,000
Interest rate (as a percent)		0.995%
Secured debt | E.SUN Bank | E.SUN Bank | Line of Credit
Short-term Debt [Line Items]
Credit facility, term	5 years