Supplemental Consolidated Financial Information (Details Textual) (USD $)				3 Months Ended	6 Months Ended
	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2012	Mar. 31, 2013 Assets Held under Capital Leases [Member]	Mar. 31, 2013 Assets Held under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 118,979,000	$ 108,131,000	$ 95,044,000	$ 1,300,000	$ 1,300,000
Depreciation and amortization				100,000	300,000
Future minimum lease payments related to capital leases due within one year	600,000
Future minimum lease payments related to capital leases due within two years	600,000
Future minimum lease payments related to capital leases due within three years	100,000
Future minimum lease payments related to capital leases	1,300,000
Future minimum lease payments related to capital leases, interest	100,000
Present value of net minimum lease payments	$ 1,200,000