FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Assets:
Equity and fixed income mutual funds	$ 24,610	$ 22,986
Life insurance policies	33,573	18,724
Recurring
Assets:
Derivatives		845
Equity and fixed income mutual funds	24,610	22,986
Life insurance policies	4,621	4,030
Total assets at fair value	29,231	27,861
Liabilities:
Derivatives	7,792	1,379
Total liabilities at fair value	7,792	1,379
Recurring | Level 1
Assets:
Derivatives		0
Equity and fixed income mutual funds	0	0
Life insurance policies	0	0
Total assets at fair value	0	0
Liabilities:
Derivatives	0	0
Total liabilities at fair value	0	0
Recurring | Level 2
Assets:
Derivatives		845
Equity and fixed income mutual funds	24,610	22,986
Life insurance policies	4,621	4,030
Total assets at fair value	29,231	27,861
Liabilities:
Derivatives	7,792	1,379
Total liabilities at fair value	7,792	1,379
Recurring | Level 3
Assets:
Derivatives		0
Equity and fixed income mutual funds	0	0
Life insurance policies	0	0
Total assets at fair value	0	0
Liabilities:
Derivatives	0	0
Total liabilities at fair value	$ 0	$ 0