Refers to the area of leased school space in square feet.

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Number of lease modifications that resulted in noncash re-measurements.

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Number of new leases that resulted in noncash re-measurement.

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Number of renewal options that can be exercised.

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Cash payments to lessor's for use of assets under operating leases.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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LEASES (Details) $ in Thousands			3 Months Ended		9 Months Ended
LEASES (Details) $ in Thousands	Oct. 31, 2023 Squarefeet Option	Oct. 18, 2023 Squarefeet Option	Sep. 30, 2023 USD ($) Squarefeet	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) Lease Option Squarefeet	Sep. 30, 2022 USD ($)	Aug. 31, 2022 USD ($)
Operating Leases [Abstract]
Approximate area of leased school space \| Squarefeet			55,000		55,000
Undiscounted lease payments			$ 40,404		$ 40,404		$ 12,200
Operating lease term			12 years		12 years
Number of renewal options \| Option					2
Renewal lease term			5 years		5 years
Rent paid					$ 600
Operating lease cost			$ 4,800	$ 4,800	14,600	$ 14,100
Variable lease cost			200		300
Operating cash flow information [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities			3,977	4,382	12,155	13,702
Non-cash activity [Abstract]
Lease liabilities arising from obtaining right-of-use assets			$ 8,349	$ 5,844	$ 10,491	$ 12,561
Number of new leases \| Lease					3
Number of lease modifications \| Lease					4
Weighted Average Remaining Lease Term and Discount Rate [Abstract]
Weighted-average remaining lease term			11 years 2 months 19 days	11 years 4 months 9 days	11 years 2 months 19 days	11 years 4 months 9 days
Weighted-average discount rate			6.94%	7.21%	6.94%	7.21%
Maturities of Lease Liabilities [Abstract]
2023 (excluding the nine months ended September 30, 2023)			$ 3,949		$ 3,949
2024			18,054		18,054
2025			16,681		16,681
2026			14,386		14,386
2027			11,499		11,499
2028			11,331		11,331
Thereafter			67,312		67,312
Total lease payments			143,212		143,212
Less: imputed interest			(40,404)		(40,404)		$ (12,200)
Present value of lease liabilities			$ 102,808		$ 102,808
Subsequent Event [Member]
Operating Leases [Abstract]
Approximate area of leased school space \| Squarefeet	100,000	120,000
Operating lease term	21 years 6 months	15 years
Number of renewal options \| Option	3	2
Renewal lease term	5 years	5 years
Minimum [Member]
Operating Leases [Abstract]
Remaining lease term			1 year		1 year
Maximum [Member]
Operating Leases [Abstract]
Remaining lease term			18 years		18 years
Variable lease cost				$ 100		$ 100