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%