LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - EASY ADVANCES (Details) - Tax Refund Solutions - Easy Advances - USD ($) $ in Thousands	2 Months Ended			12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016	Dec. 31, 2017	Dec. 31, 2016
Period Easy Advance tax credit product offered	2 months	2 months	2 months
Easy Advances originated				$ 328,519	$ 123,230
Net Charge (Credit) to the Provision for Easy Advances				$ 6,789	$ 3,048
Provision to total Easy Advances originated				2.07%	2.47%
Easy Advances net charged offs				$ 6,789	$ 3,048
Percentage of Easy Advances net charge-offs to Total Easy Advances Originated				2.07%	2.47%