CREDIT QUALITY ASSESSMENT - Collateral Dependent Loans Individually Evaluated for Credit Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	$ 9,510	$ 20,717
Allowance related to loans evaluated individually	6,593	11,405
Loans individually evaluated for credit losses without an allowance:	24,024	77,001
Total individually evaluated loans:	33,534	97,718
Unpaid contractual principal balance	38,399	115,816
Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	6,386	17,419
Loans individually evaluated for credit losses without an allowance:	8,707	71,764
Total individually evaluated loans:	15,093	89,183
Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	2,511	2,709
Loans individually evaluated for credit losses without an allowance:	13,763	3,509
Total individually evaluated loans:	16,274	6,218
Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	613	589
Loans individually evaluated for credit losses without an allowance:	1,554	1,728
Total individually evaluated loans:	2,167	2,317
Commercial real estate: | Commercial investor real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	1,144	5,612
Allowance related to loans evaluated individually	213	1,273
Loans individually evaluated for credit losses without an allowance:	11,345	39,615
Total individually evaluated loans:	12,489	45,227
Unpaid contractual principal balance	12,857	49,920
Commercial real estate: | Commercial investor real estate | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	808	4,913
Loans individually evaluated for credit losses without an allowance:	3,498	39,615
Total individually evaluated loans:	4,306	44,528
Commercial real estate: | Commercial investor real estate | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	336	699
Loans individually evaluated for credit losses without an allowance:	7,847	0
Total individually evaluated loans:	8,183	699
Commercial real estate: | Commercial investor real estate | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Commercial real estate: | Commercial owner-occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	79	0
Allowance related to loans evaluated individually	79	0
Loans individually evaluated for credit losses without an allowance:	9,227	11,561
Total individually evaluated loans:	9,306	11,561
Unpaid contractual principal balance	11,132	15,309
Commercial real estate: | Commercial owner-occupied real estate | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	79	0
Loans individually evaluated for credit losses without an allowance:	4,775	9,315
Total individually evaluated loans:	4,854	9,315
Commercial real estate: | Commercial owner-occupied real estate | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	4,452	2,246
Total individually evaluated loans:	4,452	2,246
Commercial real estate: | Commercial owner-occupied real estate | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Commercial real estate: | Commercial AD&C
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	650	1,328
Allowance related to loans evaluated individually	504	603
Loans individually evaluated for credit losses without an allowance:	0	13,716
Total individually evaluated loans:	650	15,044
Unpaid contractual principal balance	695	16,040
Commercial real estate: | Commercial AD&C | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	650	1,328
Loans individually evaluated for credit losses without an allowance:	0	13,716
Total individually evaluated loans:	650	15,044
Commercial real estate: | Commercial AD&C | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Commercial real estate: | Commercial AD&C | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Commercial Business
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	7,637	13,777
Allowance related to loans evaluated individually	5,797	9,529
Loans individually evaluated for credit losses without an allowance:	1,396	9,871
Total individually evaluated loans:	9,033	23,648
Unpaid contractual principal balance	10,573	30,958
Commercial Business | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	4,849	11,178
Loans individually evaluated for credit losses without an allowance:	434	9,118
Total individually evaluated loans:	5,283	20,296
Commercial Business | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	2,175	2,010
Loans individually evaluated for credit losses without an allowance:	962	627
Total individually evaluated loans:	3,137	2,637
Commercial Business | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	613	589
Loans individually evaluated for credit losses without an allowance:	0	126
Total individually evaluated loans:	613	715
Residential real estate: | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Allowance related to loans evaluated individually	0	0
Loans individually evaluated for credit losses without an allowance:	1,704	1,874
Total individually evaluated loans:	1,704	1,874
Unpaid contractual principal balance	2,778	3,225
Residential real estate: | Residential mortgage | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Residential real estate: | Residential mortgage | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	150	272
Total individually evaluated loans:	150	272
Residential real estate: | Residential mortgage | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	1,554	1,602
Total individually evaluated loans:	1,554	1,602
Residential real estate: | Residential construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Allowance related to loans evaluated individually	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Unpaid contractual principal balance	0	0
Residential real estate: | Residential construction | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Residential real estate: | Residential construction | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Residential real estate: | Residential construction | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Allowance related to loans evaluated individually	0	0
Loans individually evaluated for credit losses without an allowance:	352	364
Total individually evaluated loans:	352	364
Unpaid contractual principal balance	364	364
Consumer | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	0	0
Consumer | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	352	364
Total individually evaluated loans:	352	364
Consumer | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit losses with an allowance:	0	0
Loans individually evaluated for credit losses without an allowance:	0	0
Total individually evaluated loans:	$ 0	$ 0