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Short-term and Long-term Obligations - CTBC (Details) | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Apr. 30, 2016 | Nov. 30, 2015 USD ($) | Apr. 01, 2016 USD ($) | Apr. 01, 2016 TWD | Mar. 31, 2016 USD ($) | Nov. 30, 2015 TWD | Jun. 30, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total debt |  |  |  |  | $ 93,795,000 |  | $ 94,412,000
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total debt |  |  |  |  | $ 71,899,000 |  | $ 69,399,000
CTBC 2014 Facility | CTBC Bank |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 30,340,000 |  |  |  | TWD 1,000,000,000 |
CTBC 2014 Facility | CTBC Bank | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 0.92% |  | 0.82%
CTBC 2014 Facility | CTBC Bank | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 1.06% |  | 1.16%
CTBC 2014 Facility | Term Loan | CTBC Bank |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit, total outstanding balance |  |  |  |  | $ 20,263,000 |  | $ 21,280,000
Total debt |  |  |  |  | 20,263,000 |  | 21,280,000
CTBC 2014 Facility | Term Loan | CTBC Bank | Secured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 22,017,000 |  |  |  | TWD 700,000,000 |
Credit facility, term |  | 12 months |  |  |  |  |
CTBC 2014 Facility | Term Loan | CTBC Bank | 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 2014 Facility | Line of Credit | CTBC Bank | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 17,000,000 |  |  |  |  |
Credit facility, term |  | 12 months |  |  |  |  |
Percent of eligible accounts receivable |  | 80.00% |  |  |  | 80.00% |
Total debt |  |  |  |  | $ 9,700,000 |  | $ 9,700,000
CTBC 2014 Facility | Line of Credit | CTBC Bank | 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% |  |  |  |  |
Subsequent Event | CTBC 2016 Facility | CTBC Bank |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | $ 40,000,000 |  |  |  |
Subsequent Event | CTBC 2016 Facility | Term Loan | CTBC Bank | Secured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | 21,620,000 | TWD 700,000,000 |  |  |
Credit facility, term | 12 months |  |  |  |  |  |
Subsequent Event | CTBC 2016 Facility | Term Loan | CTBC Bank | Secured Debt | CTBC's Established NTD Interest Rate |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, basis spread on variable rate (as a percent) | 0.25% |  |  |  |  |  |
Subsequent Event | CTBC 2016 Facility | Term Loan | CTBC Bank | Customs Bond |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | $ 3,089,000 | TWD 100,000,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 0.50% | 0.50% |  |  |
Credit facility, term | 12 months |  |  |  |  |  |
Subsequent Event | CTBC 2016 Facility | Line of Credit | CTBC Bank | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | $ 40,000,000 |  |  |  |
Credit facility, term | 12 months |  |  |  |  |  |
Percent of eligible accounts receivable |  |  | 80.00% | 80.00% |  |  |
Subsequent Event | CTBC 2016 Facility | Line of Credit | CTBC Bank | 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% |  |  |  |  |  |

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