DEPOSITS - Summary of Certain Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Non-interest bearing demand deposits	$ 983,307	$ 946,838
Savings and transaction accounts:
Savings deposits	234,508	247,903
Interest bearing demand deposits	3,150,512	3,097,227
Time deposits:
Other time deposits	281,934	273,533
Deposits of $100,000 to $250,000	291,805	268,058
Deposits of $250,000 or more	618,328	878,163
Total deposits	4,133,819	4,044,065
Demand deposits
Savings and transaction accounts:
Interest bearing demand deposits	$ 1,723,937	$ 1,429,570