XML 45 R33.htm IDEA: XBRL DOCUMENT v3.7.0.1
Indebtedness (Narrative) (Details) - USD ($)
 6 Months Ended
Apr. 25, 2016
Jun. 30, 2017
Line of Credit Facility [Line Items]    
Accumulated amortization on the capital leases   $ 1,747,000
Maximum [Member]    
Line of Credit Facility [Line Items]    
Letter of credit required to landlord   1,250,000
Silicon Valley Bank Agreement [Member] | Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Line of credit   15,000,000
Line of credit, amount outstanding   0
Line of credit, availability   $ 15,000,000
Silicon Valley Bank, Second Amended And Restated Loan Agreement [Member]    
Line of Credit Facility [Line Items]    
Principal payment starting period after inception of loan to maturity 18 months  
Silicon Valley Bank, Second Amended And Restated Loan Agreement [Member] | Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Maturity date   Apr. 30, 2021
Annual commitment fee $ 50,000  
Building And Computer Equipment [Member]    
Line of Credit Facility [Line Items]    
Capital lease expiration period   Dec. 31, 2030
Cost of assets under lease   $ 14,467,000
Term Loan [Member] | Silicon Valley Bank, Second Amended And Restated Loan Agreement [Member]    
Line of Credit Facility [Line Items]    
Loan amount $ 25,000,000  
Loan term 5 years  
Additional fee on total term loan 4.00%  
Accrued fee amount   237,000
Mason Lease [Member] | Letter of Credit [Member]    
Line of Credit Facility [Line Items]    
Letter of credit outstanding   $ 1,250,000