Quarterly report pursuant to Section 13 or 15(d)

Revolving Credit Facility (Details)

v2.4.0.6
Revolving Credit Facility (Details) (USD $)
 3 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Mar. 31, 2012
Revolving Credit Facility          
Outstanding borrowings $ 11,940,000   $ 11,940,000   $ 10,431,000
Interest expense 128,000 173,000 319,000 404,000  
Amortization of deferred financing costs     37,000 97,000  
Credit Facility
          
Revolving Credit Facility          
Credit and security agreements     2    
Maximum borrowing capacity under facility 15,000,000   15,000,000    
Borrowing rate (as a percent) 5.40%   5.40%   5.50%
Origination fees     100,000    
Annual unused line fee (as a percent)     0.25%    
Interest rate with respect to letters of credit (as a percent)     1.50%    
Outstanding borrowings 11,900,000   11,900,000   10,400,000
Interest expense 200,000 200,000 400,000 400,000  
Amortization of deferred financing costs 18,300 48,000 36,600 100,000  
Credit Facility | Minimum
          
Revolving Credit Facility          
Interest floor amount     $ 66,000