Quarterly report pursuant to Section 13 or 15(d)

Revolving Credit Facility (Details)

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Revolving Credit Facility (Details)
 3 Months Ended
Jun. 30, 2015
USD ($)
item
Jun. 30, 2014
USD ($)
Mar. 31, 2015
USD ($)
Revolving Credit Facility      
Restricted cash $ 5,000,000    
Outstanding borrowings 16,155,000   $ 12,953,000
Interest expense 150,000 $ 143,000  
Amortization of deferred financing costs $ 42,000 56,000  
Credit Facility      
Revolving Credit Facility      
Credit and security agreements | item 2    
Maximum borrowing capacity under facility $ 20,000,000 15,000,000  
Minimum cash balance $ 13,600,000    
Variable base rate daily three month London Inter–Bank Offer Rate ("LIBOR    
Borrowing rate (as a percent) 4.00%   4.00%
Annual unused line fee (as a percent) 0.25%    
Interest rate with respect to letters of credit (as a percent) 1.50%    
Outstanding borrowings $ 16,200,000   $ 13,000,000
Interest expense 100,000 100,000  
Line of Credit Facility, Remaining Borrowing Capacity 3,000,000    
Amortization of deferred financing costs 42,000 $ 56,000  
Credit Facility | Minimum      
Revolving Credit Facility      
Interest floor amount 66,000    
Non-revolving capital expense line of credit      
Revolving Credit Facility      
Maximum borrowing capacity under facility $ 500,000