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Bank Borrowing - Narrative (Details) € in Millions |  |  |  | 1 Months Ended | 6 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 16, 2022 USD ($) | Aug. 18, 2021 USD ($) | Aug. 09, 2019 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Sep. 30, 2023 USD ($) | Sep. 30, 2023 CNY (¥) | Jun. 30, 2023 USD ($) | Jan. 31, 2023 USD ($) | Jan. 31, 2023 CNY (¥) | Dec. 31, 2022 USD ($) | Sep. 20, 2022 USD ($) | Sep. 20, 2022 CNY (¥) | Jun. 30, 2022 USD ($) | Aug. 11, 2021 USD ($) | Apr. 30, 2021 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease completion buyout option, amount |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |  |  |  |
Long-term debt |  |  |  |  | $ 32,568,000 |  |  |  | $ 38,360,000 |  |  |  |  |  |  |  |
Jireh Semiconductor Incorporated | Sales-Lease Back Transaction with Jireh Semiconductor Incorporated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt financing term (in years) |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Implied interest rate |  |  |  | 7.51% | 4.75% |  |  |  |  |  |  |  |  |  |  |  |
Historical cost | € |  |  |  |  |  | € 12.0 |  |  |  |  |  |  |  |  |  |  |
Down payment amount | € |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 6.0
Down payment percent |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  | 50.00%
Delivery payment, percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00% |  |
Delivery payment, amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,800,000 |  |
Purchase price financing, percent |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for purchase of optional hardware |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding balance |  |  |  |  | $ 10,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Jireh Semiconductor Incorporated | Sales-Lease Back Transaction with Jireh Semiconductor Incorporated | Manufacturing machinery and equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral amount |  |  |  |  | 14,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Accounts Receivable Factoring Agreement August 9 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable Factoring Agreement, Reduction Of Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,000,000 |
Secured Debt | Jireh |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 45,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term |  | 5 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  |  | 33,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from lines of credit | $ 45,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Of Communications Limited | Line of Credit | Line Of Credit Maturing December 1 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  | $ 20,600,000 | ¥ 140,000,000 |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |
Hongkong And Shanghai Banking Corporation Limited | Secured Debt | Accounts Receivable Factoring Agreement August 9 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable factoring agreement, maximum borrowing capacity, percent of net accounts receivable |  |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable factoring agreement, maximum borrowing capacity |  |  | $ 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable factoring agreement, remaining borrowing capacity |  |  |  |  | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable factoring agreement, borrowed amount outstanding |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |
Industrial And Commercial Bank of China | Foreign Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,300,000 | ¥ 72,000,000 |  |  |
Amount outstanding |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |
China Construction Bank | Line of Credit | Line Of Credit Maturing Septmeber 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  | $ 6,800,000 | ¥ 50,000,000 |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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