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Debt Obligations - Additional Information (Details) - USD ($) |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 24, 2020 | Dec. 12, 2019 | Sep. 13, 2016 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Sep. 21, 2018 | Jun. 30, 2018 | Sep. 22, 2017 | Aug. 31, 2015
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Repayment of outstanding loan |  |  |  | $ 0 | $ 76,000,000 | $ 2,000,000 |  |  |  |
MegaChips |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | $ 30,000,000.0 |  |  |  |  |  |  |
Interest rate |  |  | 0.09% |  |  |  |  |  |  |
Revolving line of credit closing date |  |  |  | Dec. 31, 2020 |  |  |  |  |  |
Minimum | MUFG |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity |  |  |  |  |  | 1 month |  |  |  |
Interest rate |  |  |  |  |  | 1.01% |  |  |  |
Maximum | MUFG |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity |  |  |  |  |  | 1 year |  |  |  |
Interest rate |  |  |  |  |  | 4.07% |  |  |  |
Revolving Line of Credit | MUFG |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  | $ 50,000,000.0 |  | $ 20,000,000.0
Loan Amount |  |  |  |  |  | $ 139,000,000.0 |  |  |  |
Repayment of outstanding loan | $ 76,000,000.0 |  |  |  |  |  |  |  |  |
Line of credit prepaid amount | 12,000,000.0 |  |  |  |  |  |  |  |  |
Line of credit, prepayment penalties | $ 100,000 |  |  |  |  |  |  |  |  |
Revolving Line of Credit | SMBC |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  | $ 20,000,000.0 |
Repayment of outstanding loan |  |  |  |  |  | $ 2,000,000.0 |  |  |  |
Line of credit facility closing date |  |  |  | 2020-09 |  |  |  |  |  |
Revolving Line of Credit | MegaChips |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Repayment of outstanding loan |  | $ 3,000,000.0 |  |  |  |  |  |  |  |
Revolving Line of Credit | Maximum | SMBC |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, principal amount |  |  |  |  |  |  | $ 20,000,000.0 |  |  |

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- Definition Line of credit facility closing date. + References No definition available. + Details
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- Definition Line of credit facility prepaid amount. + References No definition available. + Details
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- Definition Line of credit, prepayment penalties. + References No definition available. + Details
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- Definition Revolving line of credit closing date. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
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- Definition Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the current portion 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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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