SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Securities Sold Under Agreements to Repurchase (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	$ 100,000	$ 150,086
short term debt [member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	50,086
long term debt [member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	$ 100,000	$ 100,000

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant