Property and Equipment (Details Textuals) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Property, Plant and Equipment [Line Items]
Depreciation, continuing operations	$ 28,327,000	$ 22,011,000	$ 16,756,000
Depreciation, discontinued operations	1,300,000	1,300,000	700,000
Carrying Amount	291,245,000	260,379,000
Software [Member]
Property, Plant and Equipment [Line Items]
Depreciation, continuing operations	2,900,000	2,900,000	1,400,000
Carrying Amount	34,727,000	38,059,000
Capital lease equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation, continuing operations	300,000	100,000
Carrying Amount	$ 1,600,000	$ 1,600,000