Note 6 - Property and Equipment (Details Textual) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Capital and Financing Lease Obligations [Member]
Interest Paid, Capitalized	$ 300,000	$ 400,000	$ 0
Construction in Progress [Member] | Build to Suit Lease in Process [Member]
Property, Plant and Equipment, Gross	0	2,300,000
Construction in Progress [Member] | Assets Held under Capital Leases [Member]
Property, Plant and Equipment, Gross	900,000	0
Construction in Progress [Member]
Property, Plant and Equipment, Gross	10,150,000	6,867,000
Software Development [Member]
Property, Plant and Equipment, Additions	200,000	100,000
Leasehold and Building Improvements and Fixtures and Equipment [Member]
Property, Plant and Equipment, Additions	600,000	500,000
Property, Plant and Equipment, Additions, Capitalized Internal Staff Compensation [Member]
Depreciation	400,000	300,000	300,000
Interest Paid, Capitalized	309	364	$ 0
Property, Plant and Equipment, Gross	$ 235,608,000	$ 189,342,000