MERGERS AND ACQUISITIONS - Additional Information (Detail) - Yadkin Financial Corporation (YDKN) [Member] $ / shares in Units, $ in Billions	Mar. 11, 2017 USD ($) $ / shares shares
Business Acquisition [Line Items]
Assets acquired as a result of merger	$ 6.8
Loans acquired as a result of merger	5.1
Deposits acquired as a result of merger	5.2
Value of acquisition	$ 1.8
Closing price of common stock (in dollars per share) | $ / shares	$ 15.97
Number of shares (in shares) | shares	111,619,622
Common shares to be acquired (shares) | shares	51,677,565
Ratio of shares entitled to receive as per merger agreement	2.16
Warrant Expires in 2019 [Member]
Business Acquisition [Line Items]
Warrant issued (in shares) | shares	207,320
Warrant issued, exercise price (in dollars per share) | $ / shares	$ 9.63