RETIREMENT PLANS - FAIR VALUE (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Pension plan assets at the fair value
Fair value measurements	$ 11,316	$ 12,594
Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	11,316	12,594
Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0	0
Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	0	0
Cash
Pension plan assets at the fair value
Fair value measurements	1,539	25
Cash | Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	1,539	25
Cash | Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0	0
Cash | Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	0	0
Corporate bonds
Pension plan assets at the fair value
Fair value measurements	1	1
Corporate bonds | Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	1	1
Corporate bonds | Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0	0
Corporate bonds | Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	0	0
U.S. treasury and government securities
Pension plan assets at the fair value
Fair value measurements	561
U.S. treasury and government securities | Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	561
U.S. treasury and government securities | Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0
U.S. treasury and government securities | Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	0
Fixed income exchange-traded funds
Pension plan assets at the fair value
Fair value measurements	3,223	3,809
Fixed income exchange-traded funds | Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	3,223	3,809
Fixed income exchange-traded funds | Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0	0
Fixed income exchange-traded funds | Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	0	0
Preferred securities
Pension plan assets at the fair value
Fair value measurements	67	48
Preferred securities | Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	67	48
Preferred securities | Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0	0
Preferred securities | Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	0	0
Equity securities exchange-traded funds
Pension plan assets at the fair value
Fair value measurements	408	459
Equity securities exchange-traded funds | Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	408	459
Equity securities exchange-traded funds | Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0	0
Equity securities exchange-traded funds | Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	0	0
Equities
Pension plan assets at the fair value
Fair value measurements	5,517	8,252
Equities | Quoted Prices in Active Markets (Level 1)
Pension plan assets at the fair value
Fair value measurements	5,517	8,252
Equities | Significant Other Observable Inputs (Level 2)
Pension plan assets at the fair value
Fair value measurements	0	0
Equities | Significant Unobservable Inputs (Level 3)
Pension plan assets at the fair value
Fair value measurements	$ 0	$ 0