DEPOSITS (Composition of Deposits) (Detail) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Disclosure Composition Of Deposits [Abstract]
Noninterest-bearing deposits	$ 3,434,038	$ 1,892,052
Interest-bearing deposits:
Demand	1,142,475	836,433
Money market savings	2,945,990	1,839,593
Regular savings	387,636	329,919
Time deposits of less than $100,000	585,539	463,431
Time deposits of $100,000 or more	1,581,156	1,078,891
Total interest-bearing deposits	6,642,796	4,548,267
Total deposits	10,076,834	$ 6,440,319
Deposits added from the Revere acquisition	2,300,000
Certificates of Deposits	752,400
Certificates of deposit, amortizing fair value premium adjustment	$ 14,700
Deposit premium amortization period	5 years

Deposit premium amortization period in number of years.

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The amount of deposit liabilities added upon acquisition.

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- Definition

Disclosure - Composition of Deposits [Abstract]

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Amount, after accumulated amortization, of debt discount (premium).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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The aggregate of all domestic and foreign interest-bearing deposit liabilities.

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Amount of interest-bearing domestic certificate of deposit liabilities.

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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.

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-Publisher SEC
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Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $100,000.

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