OTHER BORROWINGS - Components of Other Borrowings (Detail) - USD ($) $ in Thousands |
Mar. 31, 2020 |
Dec. 31, 2019 |
---|---|---|
Subordinated Borrowing [Line Items] | ||
Junior subordinated debentures | $ 184,150 | $ 184,150 |
Junior Subordinated Debt [Member] | ||
Subordinated Borrowing [Line Items] | ||
Junior subordinated debentures | 184,150 | 184,150 |
Junior Subordinated Debt [Member] | due June 17, 2034 [Member] | Statutory Trust One [Member] | ||
Subordinated Borrowing [Line Items] | ||
Junior subordinated debentures | 65,593 | 65,593 |
Junior Subordinated Debt [Member] | due September 20, 2034 [Member] | Statutory Trust Two [Member] | ||
Subordinated Borrowing [Line Items] | ||
Junior subordinated debentures | $ 118,557 | $ 118,557 |