Credit Facilities (Details) (USD $)					6 Months Ended
	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2014 Revolving Credit Facility	Nov. 11, 2010 Revolving Credit Facility	Mar. 31, 2014 Revolving Credit Facility Machinery and Equipment	Aug. 26, 2013 Revolving Credit Facility Fifth Amendment	Mar. 31, 2014 Revolving Credit Facility LIBOR Rate Loan letter_of_credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$ 35,000,000	$ 5,000,000.0	$ 7,500,000	$ 35,000,000
Line of credit facility, minimum cash balance and excess liquidity requirement			2,500,000
Increase in eligible borrowing base					3,900,000
Line of credit facility, monthly reduction amount					91,000
Borrowing base percent of accounts earned					60.00%
Line of credit facility, increase in minimum cash balance and excess liquidity requirement			750,000
Line of credit facility, increased minimum cash balance and excess liquidity requirement			5,000,000
Borrowings from credit facility	17,600,000	21,706,000					17,600,000
Credit facility, interest rate on outstanding balance							3.30%
Standby letters of credit, total amount outstanding							$ 1,500,000
Number of standby letters of credit outstanding							5
Credit facility, expected availability amount over next twelve month period, as percentage of maximum revolving credit amount							50.00%