Quarterly report pursuant to Section 13 or 15(d)

Short-term Debt (Details)

v2.4.0.6
Short-term Debt (Details) (USD $)
 3 Months Ended 6 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Sep. 30, 2012
Line of Credit Facility [Line Items]          
Short-term debt $ 2,592,000   $ 2,592,000   2,404,000
Wells Fargo [Member]
          
Line of Credit Facility [Line Items]          
Purchase agreement period     2 years    
Maximum borrowing capacity under the agreement 4,500,000   4,500,000    
Maximum percentages of credit facility provides for borrowings on revolving basis (in hundredths)     85.00%    
Maximum period for eligible accounts receivable     90 days    
Variable rate of debt instrument basis     LIBOR    
Variable rate of debt instrument basis rate (in hundredths) 0.50%   0.50%    
Interest rate of credit facility (in hundredths)     5.25%    
Effective interest rate of debt instrument (in hundredths) 5.75%   5.75%   5.75%
Minimum period of credit facility     60 days    
Remaining borrowing capacity availability under this agreement 500,000   500,000    
Interest expense under line of credit $ 44,000 $ 50,000 $ 85,000 $ 88,000