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v3.19.3.a.u2

Short-term Debt - CTBC (Details) | 1 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jan. 31, 2018 USD ($) | May 31, 2017 USD ($) | Apr. 30, 2016 | Jun. 30, 2019 TWD ($) | Mar. 31, 2019 USD ($) | Aug. 31, 2018 USD ($) | Jun. 30, 2018 USD ($) | Jan. 31, 2018 TWD ($) | May 31, 2017 TWD ($) | Apr. 01, 2016 USD ($) | Apr. 01, 2016 TWD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total short-term debt |  |  |  |  |  | $ 22,660,000 |  | $ 116,181,000 |  |  |  |
Line of credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total short-term debt |  |  |  |  |  | 0 |  | 93,246,000 |  |  |  |
CTBC Bank | Term loan | Secured debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total short-term debt |  |  |  |  |  | 22,660,000 |  | 22,935,000 |  |  |  |
CTBC Bank | Line of credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total short-term debt |  |  |  |  |  | 0 |  | $ 25,900,000 |  |  |  |
Credit facility, unused amount |  |  |  |  |  | $ 17,300,000 |  |  |  |  |  |
CTBC Bank | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 0.92% |  | 0.95% |  |  |  |
CTBC Bank | CTBC Bank |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 40,000,000 |
CTBC Bank | CTBC Bank | Term loan | Secured debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term |  | 12 months | 12 months | 12 months |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 23,600,000 | $ 23,000,000 |  |  |  |  |  | $ 700,000,000.0 | $ 700,000,000.0 | 21,620,000 | $ 700,000,000
Collateral amount |  |  |  |  |  | $ 26,000,000 |  |  |  |  |  |
CTBC Bank | CTBC Bank | Term loan | Secured debt | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term | 12 months |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity | $ 22,500,000 |  |  |  | $ 700,000,000.0 |  |  |  |  |  |  |
CTBC Bank | CTBC Bank | Term loan | Secured debt | CTBC's Established NTD Interest Rate |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate |  | 0.25% | 0.25% | 0.25% |  |  |  |  |  |  |  |
CTBC Bank | CTBC Bank | Term loan | Secured debt | CTBC's Established NTD Interest Rate | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate | 0.25% |  |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Bank | Term loan | Customs Bond |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term |  |  | 12 months |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | $ 3,300,000 |  |  |  |  |  |  | $ 100,000,000.0 | $ 3,100,000 | $ 100,000,000
Interest rate, stated percentage |  |  | 0.50% |  |  |  |  |  |  | 0.50% | 0.50% | 0.50%
CTBC Bank | CTBC Bank | Line of credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term |  |  |  | 12 months |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | $ 50,000,000.0 |  |  |  |  |  |  |  | $ 40,000,000 |
Percent of eligible accounts receivable |  |  | 80.00% |  |  |  |  |  |  | 80.00% | 80.00% | 80.00%
CTBC Bank | CTBC Bank | Line of credit | Revolving Credit Facility | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity | $ 50,000,000.0 |  |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Bank | Line of credit | Revolving Credit Facility | CTBC's Established USD Interest Rate |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate |  |  |  | 0.30% |  |  |  |  |  |  |  |
CTBC Bank | CTBC Bank | Line of credit | Revolving Credit Facility | CTBC's Established USD Interest Rate | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate |  |  | 0.40% |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Bank | Line of credit | Revolving Credit Facility | CTBC's Established USD Interest Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate |  |  | 0.45% |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 0.50% Interest | Term loan | Customs Bond |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term |  | 12 months |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 3,400,000 |  |  |  |  |  |  | $ 100,000,000.0 |  |  |
Interest rate, stated percentage |  | 0.50% |  |  |  |  |  |  | 0.50% |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 0.50% Interest | Term loan | Customs Bond | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term | 12 months |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity | $ 3,200,000 |  |  |  | $ 100,000,000.0 |  |  |  |  |  |  |
Interest rate, stated percentage | 0.50% |  |  |  | 0.50% |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 0.25% Interest | Line of credit | Customs Bond |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term |  | 12 months |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 50,500,000 |  |  |  |  |  |  | $ 1,500,000,000.0 |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 0.25% Interest | Line of credit | Customs Bond | CTBC's Established NTD Interest Rate |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate |  | 0.25% |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 180 Day, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Line of credit | Revolving Credit Facility | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percent of eligible accounts receivable | 100.00% |  |  |  | 100.00% |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 180 Day, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Line of credit | Revolving Credit Facility | CTBC's Established USD Interest Rate | Minimum | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate | 0.30% |  |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 180 Day, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Line of credit | Revolving Credit Facility | CTBC's Established USD Interest Rate | Maximum | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate | 0.50% |  |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 180 Day, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Line of credit | Customs Bond | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term | 180 days |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity | $ 48,200,000 |  |  |  | $ 1,500,000,000.0 |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Term loan | Customs Bond | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, term | 12 months |  |  |  |  |  |  |  |  |  |  |
Percent of eligible accounts receivable | 100.00% |  |  |  | 100.00% |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Line of credit | Revolving Credit Facility | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity | $ 50,000,000.0 |  |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Line of credit | Revolving Credit Facility | Minimum | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate | 0.30% |  |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC Credit Facility, 12 Month, Up To 100% Of Eligible Accounts Receivable, Between 0.30% And 0.50% Interest | Line of credit | Revolving Credit Facility | Maximum | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, basis spread on variable rate | 0.50% |  |  |  |  |  |  |  |  |  |  |
CTBC Bank | CTBC 2018 Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 50,000,000.0 |  |  |  |  | $ 40,000,000.0 |  |  |  |  |

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