SEGMENT REPORTING - Summary of Long-lived Assets by Geographical Region (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net long-lived assets	$ 57.6	$ 59.7
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net long-lived assets	34.3	36.3
Canada Direct Lending
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net long-lived assets	22.8	23.4
Canada POS Lending
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net long-lived assets	$ 0.5	$ 0.0