GOODWILL AND OTHER INTANGIBLES - Goodwill by Segment (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 38,632	$ 28,098
Mergers and acquisitions		6,303
Adjustments	(21)	4,231
Goodwill	38,611	38,632
Mortgage Banking [Member]
Goodwill [Line Items]
Goodwill	959	0
Mergers and acquisitions		574
Adjustments	53	385
Goodwill	1,012	959
Consumer Retail Banking Segment [Member]
Goodwill [Line Items]
Goodwill	2,733	1,406
Mergers and acquisitions		794
Adjustments	74	533
Goodwill	2,807	2,733
Commercial And Corporate Segment [Member]
Goodwill [Line Items]
Goodwill	8,248	0
Mergers and acquisitions		4,935
Adjustments	(148)	3,313
Goodwill	8,100	8,248
United States Operations Segment [Member]
Goodwill [Line Items]
Goodwill	26,692	26,692
Mergers and acquisitions		0
Adjustments	0	0
Goodwill	$ 26,692	$ 26,692

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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