CREDIT QUALITY ASSESSMENT - Information on the Credit Quality of Loan Portfolio (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Loans placed on non-accrual	$ 8,100
Non-accrual status
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	112,361	$ 38,632
PCD loans designated as non-accrual		13,084
Loans placed on non-accrual	8,146	85,286
Non-accrual balances transferred to OREO	(257)	(70)
Non-accrual balances charged-off	(11,593)	(1,394)
Net payments or draws	(61,230)	(21,201)
Non-accrual loans brought current	(1,341)	(1,976)
Balance at end of period	46,086	112,361
Non-accrual status | Commercial real estate: | Commercial investor real estate
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	45,227	8,437
PCD loans designated as non-accrual		9,544
Loans placed on non-accrual	699	37,882
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(5,803)	(411)
Net payments or draws	(26,813)	(10,225)
Non-accrual loans brought current	(821)	0
Balance at end of period	12,489	45,227
Non-accrual status | Commercial real estate: | Commercial owner-occupied real estate
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	11,561	4,148
PCD loans designated as non-accrual		0
Loans placed on non-accrual	3,676	8,572
Non-accrual balances transferred to OREO	(257)	0
Non-accrual balances charged-off	(136)	0
Net payments or draws	(5,538)	(1,059)
Non-accrual loans brought current	0	(100)
Balance at end of period	9,306	11,561
Non-accrual status | Commercial real estate: | Commercial AD&C
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	15,044	829
PCD loans designated as non-accrual		0
Loans placed on non-accrual	49	15,844
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(2,007)	0
Net payments or draws	(12,436)	(1,629)
Non-accrual loans brought current	0	0
Balance at end of period	650	15,044
Non-accrual status | Commercial Business
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	22,933	8,450
PCD loans designated as non-accrual		2,539
Loans placed on non-accrual	1,339	17,442
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(3,547)	(446)
Net payments or draws	(12,305)	(4,169)
Non-accrual loans brought current	0	(883)
Balance at end of period	8,420	22,933
Non-accrual status | Residential real estate: | Residential mortgage
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	10,212	12,661
PCD loans designated as non-accrual		8
Loans placed on non-accrual	695	1,485
Non-accrual balances transferred to OREO	0	(70)
Non-accrual balances charged-off	0	(416)
Net payments or draws	(2,406)	(2,598)
Non-accrual loans brought current	(60)	(858)
Balance at end of period	8,441	10,212
Non-accrual status | Residential real estate: | Residential construction
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	0	0
PCD loans designated as non-accrual		0
Loans placed on non-accrual	62	0
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	0
Net payments or draws	(7)	0
Non-accrual loans brought current	0	0
Balance at end of period	55	0
Non-accrual status | Consumer
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	7,384	4,107
PCD loans designated as non-accrual		993
Loans placed on non-accrual	1,626	4,061
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(100)	(121)
Net payments or draws	(1,725)	(1,521)
Non-accrual loans brought current	(460)	(135)
Balance at end of period	$ 6,725	$ 7,384