Short-term Obligations - CTBC (Details)	1 Months Ended
	Apr. 30, 2016	Nov. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Apr. 01, 2016 USD ($)	Apr. 01, 2016 TWD	Nov. 30, 2015 TWD	Jun. 30, 2015 USD ($)
Debt Instrument [Line Items]
Total debt, outstanding borrowings			$ 93,589,000				$ 94,412,000
CTBC 2016 Facility | CTBC Bank
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity				$ 40,000,000
Credit facility, unused amount			$ 9,543,000
CTBC 2016 Facility | CTBC Bank | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)			0.90%
CTBC 2016 Facility | CTBC Bank | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)			1.25%
CTBC 2016 Facility | CTBC Bank | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt, outstanding borrowings			$ 10,100,000
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
Debt, total outstanding borrowings			$ 20,357,000
Credit facility, term	12 months
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%
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
Interest rate, stated percentage				0.50%	0.50%
Credit facility, term	12 months
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%
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%
CTBC 2015 Facility | CTBC Bank
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 30,340,000				TWD 1,000,000,000
CTBC 2015 Facility | CTBC Bank | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)							0.82%
CTBC 2015 Facility | CTBC Bank | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)							1.16%
CTBC 2015 Facility | CTBC Bank | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt, outstanding borrowings							$ 9,700,000
CTBC 2015 Facility | Term Loan | CTBC Bank | Secured Debt
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 22,017,000				TWD 700,000,000
Debt, total outstanding borrowings							$ 21,280,000
Credit facility, term		12 months
CTBC 2015 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 2015 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%
CTBC 2015 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%