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Credit Facility (Details Textual) - USD ($)
1 Months Ended 6 Months Ended 13 Months Ended
Jul. 03, 2015
Dec. 31, 2011
Jun. 30, 2015
Apr. 30, 2012
Debt Instrument [Line Items]        
Borrowings under credit facility, interest payable description   at either (i) the bank’s prime rate or (ii) LIBOR plus 2.25%    
Secured Debt        
Debt Instrument [Line Items]        
Borrowings under credit facility, interest payable description   applicable interest rate was LIBOR plus 2.25% (2.5% as of June 30, 2015)    
LIBOR | Revolving Credit Facility        
Debt Instrument [Line Items]        
Borrowings under credit facility, interest related to Libor rate   2.25% 2.25%  
Applicable interest rate percentage at period end     2.50%  
East West Bank | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Revolving line of credit $ 25,000,000      
Percentage of equity interests pledged 100.00%      
Annual commitment fee amount $ 125,000      
East West Bank | Minimum | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Unused commitment fee percentage 0.30%      
East West Bank | Maximum | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Unused commitment fee percentage 0.50%      
East West Bank | Prime Rate | Minimum | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Borrowings under credit facility, interest related to Libor rate 0.00%      
East West Bank | Prime Rate | Maximum | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Borrowings under credit facility, interest related to Libor rate 0.50%      
East West Bank | LIBOR | Minimum | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Borrowings under credit facility, interest related to Libor rate 2.75%      
East West Bank | LIBOR | Maximum | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Borrowings under credit facility, interest related to Libor rate 3.25%      
Revolving Credit Facility | Secured Debt        
Debt Instrument [Line Items]        
Amount under debt agreement     $ 5,900,000  
Equipment Term Loan | Secured Debt        
Debt Instrument [Line Items]        
Percentage of eligible equipment purchases financed       80.00%
Amount borrowed under Equipment Term Loan       $ 5,000,000