Short-term and Long-term Debt Obligations - CTBC (Details) - CTBC Bank - CTBC 2016 Facility	1 Months Ended
	Apr. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2016 USD ($)	Apr. 30, 2016 TWD
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 40,000,000
Credit facility, unused amount		$ 0
Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.94%	0.90%
Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		1.83%	1.25%
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		$ 19,838,000	$ 20,357,000
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%
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%
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		$ 20,300,000	$ 10,100,000
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%