Supplemental Consolidated Financial Information (Details Textual) (USD $)				3 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2012 Assets Held under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 114,676,000	$ 108,131,000	$ 84,513,000	$ 1,400,000
Depreciation and amortization				200,000
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	200,000
Future minimum lease payments related to capital leases	1,400,000
Future minimum lease payments related to capital leases, interest	100,000
Present value of net minimum lease payments	$ 1,300,000