INVESTMENTS (Narrative) (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Trading securities	$ 3,808	$ 3,808	$ 4,428
AFS debt securities, allowance	0	0	0
Net unrealized loss on debt securities, net of tax	60,000	60,000	1,200
Deferred tax assets, unrealized losses on available for sale securities	16,400	16,400	321
HTM debt securities, allowance	0	0	0
HTM debt securities, excluding accrued interest from amortized cost	1,400	1,400	10
Asset Pledged as Collateral
Schedule of Investments [Line Items]
AFS and HTM debt securities, amortized cost	662,800	662,800	640,100
AFS and HTM debt securities, fair value	619,500	619,500	641,200
Available-for-sale Securities
Schedule of Investments [Line Items]
Interest Receivable	1,900	1,900	$ 3,400
Transferred Securities
Schedule of Investments [Line Items]
AFS debt securities transferred to HTM, fair value	520,300	520,300
AFS debt securities, transfer, unrealized loss	72,100	72,100
Net unrealized loss on debt securities, net of tax	(56,000)	(56,000)
Deferred tax assets, unrealized losses on available for sale securities	$ 15,300	$ 15,300