CREDIT FACILITY, NOTES PAYABLE AND CAPITAL LEASE OBLIGATIONS (Details - Margin Spread Based on Leverage Ratio, Debt Instrument)	Aug. 31, 2018	Sep. 30, 2015
Pricing Level I | Restated Agreement
Debt Instrument [Line Items]
Leverage ratio, greater than	3.00	3.00
Pricing Level I | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage	2.75%
Unused capacity, commitment fee percentage	0.45%
Pricing Level I | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage		3.00%
Unused capacity, commitment fee percentage		0.45%
Pricing Level I | Eurodollar | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	2.75%
Pricing Level I | Eurodollar | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		3.00%
Pricing Level I | Base Rate | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Pricing Level I | Base Rate | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Pricing Level II | Restated Agreement
Debt Instrument [Line Items]
Leverage ratio, greater than	2.50	2.50
Leverage ratio, less than	3.00	3.00
Pricing Level II | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage	2.25%
Unused capacity, commitment fee percentage	0.40%
Pricing Level II | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage		2.50%
Unused capacity, commitment fee percentage		0.40%
Pricing Level II | Eurodollar | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Pricing Level II | Eurodollar | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		2.50%
Pricing Level II | Base Rate | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
Pricing Level II | Base Rate | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Pricing Level III | Restated Agreement
Debt Instrument [Line Items]
Leverage ratio, greater than	2.00	2.00
Leverage ratio, less than	2.50	2.50
Pricing Level III | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage	2.00%
Unused capacity, commitment fee percentage	0.35%
Pricing Level III | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage		2.25%
Unused capacity, commitment fee percentage		0.35%
Pricing Level III | Eurodollar | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Pricing Level III | Eurodollar | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		2.25%
Pricing Level III | Base Rate | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Pricing Level III | Base Rate | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		1.25%
Pricing Level IV | Restated Agreement
Debt Instrument [Line Items]
Leverage ratio, greater than	1.50	1.50
Leverage ratio, less than	2.00	2.00
Pricing Level IV | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage	1.75%
Unused capacity, commitment fee percentage	0.30%
Pricing Level IV | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage		2.00%
Unused capacity, commitment fee percentage		0.30%
Pricing Level IV | Eurodollar | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Pricing Level IV | Eurodollar | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Pricing Level IV | Base Rate | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Pricing Level IV | Base Rate | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Pricing Level V | Restated Agreement
Debt Instrument [Line Items]
Leverage ratio, less than	1.50	1.50
Pricing Level V | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage	1.50%
Unused capacity, commitment fee percentage	0.30%
Pricing Level V | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage		1.75%
Unused capacity, commitment fee percentage		0.30%
Pricing Level V | Eurodollar | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Pricing Level V | Eurodollar | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%
Pricing Level V | Base Rate | Restated Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Pricing Level V | Base Rate | Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		0.75%