OTHER CURRENT ASSETS AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Other Assets, Current [Abstract]
Deferred Compensation Cash-based Arrangements, Asset, Current	$ 7,857	$ 5,771
Prepaid expenses	11,798	11,967
Other miscellaneous current assets	753	4,671
Total other current assets	20,408	22,409
Other Liabilities, Current [Abstract]
Accrued payroll and related taxes and benefits	46,821	44,857
Combined outstanding Slot Win Contribution and free promotional slot play contribution	12,969	12,327
Amounts due to horsemen	6,381	6,468
Payments in transit	5,020	16,597
Other miscellaneous current liabilities	68,287	68,903
Total other current liabilities	$ 139,478	$ 149,152