Short-Term and Long-Term Obligations (Details Textual)							1 Months Ended				3 Months Ended						3 Months Ended		3 Months Ended				3 Months Ended
	Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Sep. 30, 2013 Building Term Loan [Member] USD ($)	Jun. 30, 2013 Building Term Loan [Member] USD ($)	Sep. 30, 2013 Bank of America [Member] USD ($)	Oct. 31, 2011 Bank of America [Member] USD ($)	Oct. 31, 2011 Bank of America [Member] Building Term Loan [Member] USD ($)	Sep. 30, 2013 Bank of America [Member] Building Term Loan [Member] USD ($)	Jun. 30, 2013 Bank of America [Member] Building Term Loan [Member] USD ($)	Jun. 30, 2010 Bank of America [Member] Building Term Loan [Member] Building	Sep. 30, 2013 Bank of America [Member] Revolving Credit Facility [Member] USD ($) Consecutive_Quarters	Jun. 30, 2013 Bank of America [Member] Revolving Credit Facility [Member] USD ($)	Sep. 30, 2013 Bank of America [Member] Maximum [Member]	Jun. 30, 2013 Bank of America [Member] Maximum [Member]	Sep. 30, 2013 Bank of America [Member] Minimum [Member]	Jun. 30, 2013 Bank of America [Member] Minimum [Member]	Sep. 30, 2013 Bank of America [Member] Minimum [Member] Revolving Credit Facility [Member] USD ($)	Sep. 30, 2013 Bank of America [Member] London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2013 Bank of America [Member] London Interbank Offered Rate (LIBOR) [Member] Building Term Loan [Member]	Sep. 30, 2013 Bank of America [Member] London Interbank Offered Rate (LIBOR) [Member] Revolving Credit Facility [Member]	Oct. 30, 2011 CTBC Bank [Member] USD ($)	Oct. 30, 2011 CTBC Bank [Member] TWD	Sep. 30, 2013 CTBC Bank [Member] Building Term Loan [Member] USD ($)	Jun. 30, 2013 CTBC Bank [Member] Building Term Loan [Member] USD ($)	Jul. 31, 2012 CTBC Bank [Member] Building Term Loan [Member] USD ($)	Jul. 31, 2012 CTBC Bank [Member] Building Term Loan [Member] TWD
Short-term and long-term obligations
Line of credit facility, maximum borrowing capacity						$ 40,000,000															$ 9,898,000	300,000,000
Term loan, face amount							14,000,000																		14,912,000	450,000,000
Term loan, term							5 years
Credit facility, basis spread on variable rate																			1.50%	1.25%			0.30%
Number of buildings purchased in San Jose										3
Credit facility, total outstanding balance	34,749,000	35,171,000	23,850,000	24,272,000				8,633,000	9,333,000		10,899,000	10,899,000											15,217,000	14,939,000
Interest rate, period end													1.68%	1.69%	1.22%	1.23%		0.18%					1.22%	1.20%
Line of credit facility, unused amount					29,101,000
Not to incur on a consolidated basis, a net loss before taxes and extraordinary items in any two consecutive quarterly accounting periods											2
The Company's funded debt to EBITDA ratio (ratio of all outstanding liabilities for borrowed money and other interest-bearing liabilities, including current and long-term debt, less the non-current portion of subordinated liabilities to EBITDA), shall not be greater than																	2.00
The Company's unencumbered liquid assets, as defined in the agreement, held in the United States shall have an aggregate market value, of not less than																	30,000,000
Total assets collateralizing line of credit											590,450,000	586,742,000
Total assets collateralizing term loan								$ 17,756,000	$ 17,813,000														$ 27,593,000	$ 27,702,000