INCOME TAXES (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Forecasted effective tax rate	22.10%	22.30%
Revaluation of deferred tax assets and liabilities	$ (554)	$ (166)
Actual effective tax rate	21.90%	22.30%
ITC carryforward	$ 171,600			$ 211,800
Effective term	20 years
Potential net capital loss	$ 56,400			56,600
Operating loss carryforward, valuation allowance	16,800			17,200
Investment tax credit, solar property, percentage			26.00%		26.00%	26.00%
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 516,100			544,400
State | Minimum
Operating Loss Carryforwards [Line Items]
Effective term	7 years
State | Maximum
Operating Loss Carryforwards [Line Items]
Effective term	20 years
Capital Loss Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, valuation allowance	$ 5,000			$ 5,100