Basis of Presentation - Credit Facility (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jun. 30, 2012	Aug. 03, 2012
Credit Facility:
Maximum revolving credit amount	$ 35.0
First Amendment to Credit Facility:
Increase in eligible borrowing base	10.0
Eligible percentage of appraised value of equipment, original percentage amount	85.00%
Eligible percentage of appraised value of real estate, original percentage amount	50.00%
Excess availability financial covenant requirement, original amount	7.5
Excess availability financial covenant requirement, revised amount	3.5
Additional rate added to LIBOR rate for outstanding borrowings	4.00%
Credit facility amendment condition, upon receipt of flood-related insurance proceeds in excess of this amount	30.0
Second Amendment to Credit Facility:
Additional borrowing base amount, reduced to this amount on July 1, 2012, original amount	8.1
Additional borrowing base amount, reduced to this amount on January 1, 2013, original amount	3.1
Additional borrowing base amount, reduced to this amount on July 1, 2012, revised amount	5.0
Additional borrowing base amount, reduced to this amount on January 1, 2013, revised amount	0
Eligible percentage of appraised value of equipment, revised percentage amount	0.00%
Eligible percentage of appraised value of real estate, revised percentage amount	0.00%
Credit Facility Disclosures:
Credit facility, amount outstanding	22.3
Credit facility, interest rate on outstanding balance	4.50%
Credit facility, current amount outstanding		17.0
Standby letters of credit, total amount outstanding	2.4
Number of standby letters of credit outstanding (in ones)	9
Credit facility, remaining borrowing capacity	$ 0.7
Credit facility, expected availability amount over next twelve month period, as percentage of maximum revolving credit amount	70.00%