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BUSINESS COMBINATION - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended		12 Months Ended	25 Months Ended
	Sep. 01, 2020	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Business Acquisition [Line Items]
Merger and restructuring costs		$ 2,268		$ 10,441	$ 24,582	$ 14,188
Adjustments			$ 4,200		(21)		$ 4,231
Santander [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	Sep. 01, 2020
Business Acquisition, Name of Acquired Entity	BSPR
Merger and restructuring costs		$ 2,300		$ 10,400	$ 24,600	$ 14,200		$ 62,500
Adjustments	$ 4,200

X

- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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