NONINTEREST INCOME - Other income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Managed service fees
Revenue from External Customer [Line Items]
Noninterest fee income	$ 3,609	$ 4,031
Currency preparation
Revenue from External Customer [Line Items]
Noninterest fee income	948	840
ATM loss protection
Revenue from External Customer [Line Items]
Noninterest fee income	622	647
Miscellaneous products and services
Revenue from External Customer [Line Items]
Noninterest fee income	3,506	1,435
Other income
Revenue from External Customer [Line Items]
Noninterest fee income	$ 8,685	$ 6,953