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SHORT-TERM BORROWINGS - Summary of the Use of Short-Term Borrowings (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Balance at year-end	$ 55,729	$ 146,600	$ 55,000
Weighted average interest rate at year-end	0.41%	1.87%	2.76%
Average balance during the year	$ 138,310	$ 23,171	$ 71,457
Average interest rate during the year	0.67%	2.20%	2.09%
Maximum month-end balance during the year	$ 178,729	$ 146,600	$ 103,000

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- Definition

The average effective interest rate during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, maximum month-end borrowings during the period.

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-SubTopic 10
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Short term borrowings other than repurchase agreements.

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