ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Changes in Accumulated Balances of AOCI Including Current Period Other Comprehensive Income (Loss) and Reclassifications Out of AOCI (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 4,106,002	$ 3,122,381	$ 2,967,940
Other comprehensive income (loss) before reclassifications	27,521	(22,471)	32,386
Less: gain (loss) reclassified from AOCI	(1,454)	13,732	15,853
Tax effect	1,596	(100)	(1,640)
Net change in unrealized holding gain (loss), net of tax	30,571	(36,303)	14,893
Ending balance	4,270,740	4,106,002	3,122,381
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(20,028)	16,614	7,201
Other comprehensive income (loss) before reclassifications	34,379	(23,462)	25,266
Less: gain (loss) reclassified from AOCI	(1,454)	13,180	15,853
Tax effect	0	0	0
Net change in unrealized holding gain (loss), net of tax	35,833	(36,642)	9,413
Ending balance	15,805	(20,028)	16,614
Unrealized Gains (Losses) on Available-for-Sale Debt Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	3,889	3,565	(1,917)
Other comprehensive income (loss) before reclassifications	(6,858)	976	7,122
Less: gain (loss) reclassified from AOCI	0	552	0
Tax effect	1,596	(100)	(1,640)
Net change in unrealized holding gain (loss), net of tax	(5,262)	324	5,482
Ending balance	(1,373)	3,889	3,565
Accumulated Gain Loss from Other
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	0	(15)	(13)
Other comprehensive income (loss) before reclassifications	0	15	(2)
Less: gain (loss) reclassified from AOCI	0	0	0
Tax effect	0	0	0
Net change in unrealized holding gain (loss), net of tax	0	15	(2)
Ending balance	0	0	(15)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(16,139)	20,164	5,271
Ending balance	$ 14,432	$ (16,139)	$ 20,164