NONINTEREST INCOME - Other Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Other income
Revenue from External Customer [Line Items]
Noninterest fee income	$ 12,553	$ 8,685
Managed service fees
Revenue from External Customer [Line Items]
Noninterest fee income	3,838	3,609
Currency preparation
Revenue from External Customer [Line Items]
Noninterest fee income	871	948
ATM loss protection
Revenue from External Customer [Line Items]
Noninterest fee income	608	622
Capital market revenue
Revenue from External Customer [Line Items]
Noninterest fee income	1,508	0
Insurance commissions
Revenue from External Customer [Line Items]
Noninterest fee income	1,295	0
Miscellaneous products and services
Revenue from External Customer [Line Items]
Noninterest fee income	$ 4,433	$ 3,506