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Short-term and Long-term Debt Obligations - CTBC (Details) - CTBC Bank | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Apr. 30, 2016 | Nov. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Apr. 01, 2016 USD ($) | Apr. 01, 2016 TWD | Nov. 30, 2015 TWD
CTBC 2015 Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 30,340,000 |  |  |  |  | TWD 1,000,000,000
CTBC 2015 Facility | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, term |  | 12 months |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 17,000,000 |  |  |  |  |
Percent of eligible accounts receivable |  | 80.00% |  |  |  |  | 80.00%
CTBC 2015 Facility | Line of Credit | Revolving Credit Facility | CTBC's Established USD Interest Rate |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, basis spread on variable rate (as a percent) |  | 0.30% |  |  |  |  |
CTBC 2015 Facility | Term Loan | Secured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, term |  | 12 months |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 22,017,000 |  |  |  |  | TWD 700,000,000
CTBC 2015 Facility | Term Loan | Secured Debt | CTBC's Established NTD Interest Rate |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, basis spread on variable rate (as a percent) |  | 0.25% |  |  |  |  |
CTBC 2016 Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  | $ 40,000,000 |  |
Credit facility, unused amount |  |  | $ 139,000 |  |  |  |
CTBC 2016 Facility | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate (as a percent) |  |  | 0.89% | 0.90% |  |  |
CTBC 2016 Facility | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate (as a percent) |  |  | 1.40% | 1.25% |  |  |
CTBC 2016 Facility | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, term | 12 months |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  | $ 40,000,000 |  |
Percent of eligible accounts receivable |  |  |  |  | 80.00% | 80.00% |
Debt, total outstanding borrowings |  |  | $ 18,800,000 | $ 10,100,000 |  |  |
CTBC 2016 Facility | Line of Credit | Revolving Credit Facility | CTBC's Established USD Interest Rate |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, basis spread on variable rate (as a percent) | 0.30% |  |  |  |  |  |
CTBC 2016 Facility | Term Loan | Customs Bond |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, term | 12 months |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  | $ 3,089,000 | TWD 100,000,000 |
Interest rate, stated percentage |  |  |  |  | 0.50% | 0.50% |
CTBC 2016 Facility | Term Loan | Secured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, term | 12 months |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  | $ 21,620,000 | TWD 700,000,000 |
Debt, total outstanding borrowings |  |  | $ 21,061,000 | $ 20,357,000 |  |  |
CTBC 2016 Facility | Term Loan | Secured Debt | CTBC's Established NTD Interest Rate |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, basis spread on variable rate (as a percent) | 0.25% |  |  |  |  |  |

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
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