Quarterly report pursuant to Section 13 or 15(d)

Revolving Credit Facility (Details)

v3.7.0.1
Revolving Credit Facility (Details)
 3 Months Ended
Jun. 02, 2017
USD ($)
agreement
Jun. 30, 2017
USD ($)
agreement
Jun. 30, 2016
USD ($)
Mar. 31, 2017
USD ($)
Revolving Credit Facility        
Outstanding borrowings   $ 9,484,000   $ 11,533,000
Interest expense   221,000 $ 134,000  
Amortization of deferred financing costs   $ 105,000 44,000  
Borrowing rate (as a percent)   5.80%   4.90%
Wells Fargo        
Revolving Credit Facility        
Number of credit and security agreements | agreement   2    
Bridge Bank        
Revolving Credit Facility        
Number of secured credit facilities | agreement 2      
Term of credit agreements 2 years      
Maximum borrowings as a percent of cash held 85.00%      
Credit Facility | Wells Fargo        
Revolving Credit Facility        
Maximum borrowing capacity under facility   $ 20,000,000    
Outstanding borrowings   6,100,000   $ 11,500,000
Interest expense   200,000 100,000  
Amortization of deferred financing costs   100,000 $ 43,750  
Credit Facility | Bridge Bank        
Revolving Credit Facility        
Maximum borrowing capacity under facility $ 12,000,000      
Outstanding borrowings   9,500,000    
Interest expense   58,800    
Amortization of deferred financing costs   $ 18,000    
Restricted cash equivalents for credit facility 5,000,000      
Origination fees $ 200,000      
Credit Facility | Bridge Bank | Prime Rate        
Revolving Credit Facility        
Variable base rate prime rate      
Interest margin on variable rate 1.50%