Short-term and Long-term Obligations - Debt (Details) - USD ($)	1 Months Ended
	Jul. 31, 2016	Apr. 30, 2016	Sep. 30, 2016	Jun. 30, 2016
Debt Instrument [Line Items]
Total debt			$ 98,560,000	$ 93,589,000
Less: debt issuance costs			(365,000)	0
Total debt, net of debt issuance costs			98,195,000	93,589,000
Current portion, net of debt issuance costs			(60,983,000)	(53,589,000)
Long-term portion, net of debt issuance costs			37,212,000	40,000,000
CTBC Bank | CTBC 2016 Facility | Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Credit facility, term		12 months
CTBC Bank | CTBC 2016 Facility | Secured Debt | Term Loan
Debt Instrument [Line Items]
Credit facility, term		12 months
Term Loan | Secured Debt
Debt Instrument [Line Items]
Total debt			68,561,000	21,290,000
Term Loan | Bank of America | Bank of America 2015 Credit Agreement | Secured Debt
Debt Instrument [Line Items]
Total debt				933,000
Term Loan | Bank of America | Bank of America 2016 Credit Agreement | Secured Debt
Debt Instrument [Line Items]
Total debt			47,500,000
Term loan, face amount	$ 50,000,000
Credit facility, term	5 years
Term Loan | CTBC Bank | CTBC 2016 Facility | Secured Debt
Debt Instrument [Line Items]
Total debt			21,061,000	20,357,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt			29,999,000	72,299,000
Line of Credit | Bank of America | Bank of America 2015 Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt				62,199,000
Line of Credit | Bank of America | Bank of America 2016 Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt			11,199,000
Line of Credit | CTBC Bank | CTBC 2016 Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt			$ 18,800,000	$ 10,100,000