PREMISES AND EQUIPMENT, NET - Summary by Country (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total	$ 20,984	$ 24,526
United States
Property, Plant and Equipment [Line Items]
Total	11,305	13,426
Luxembourg
Property, Plant and Equipment [Line Items]
Total	8,819	10,295
India
Property, Plant and Equipment [Line Items]
Total	660	671
Philippines
Property, Plant and Equipment [Line Items]
Total	86	95
Other
Property, Plant and Equipment [Line Items]
Total	$ 114	$ 39