COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Lease Obligations
Rents charged to expense under operating leases	$ 5,500,000	$ 5,300,000
Minimum future lease commitments
2017	5,012,544
2018	4,526,062
2019	3,630,507
2020	2,746,947
2021	1,729,502
Thereafter	3,790,027
Total minimum lease payments	21,435,589
Self-insured liabilities reserve
Liabilities for workers' compensation, general liability and health insurance	1,300,000	1,600,000
Beginning balance	1,600,000	1,400,000
Charged to expense	5,700,000	4,800,000
Payments	6,000,000	4,600,000
Ending balance	$ 1,300,000	$ 1,600,000