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OPERATING SEGMENT REPORTING - Geographic information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Operating Segment Reporting
Long-lived Assets	$ 445,663		$ 445,663		$ 445,624
Revenue	40,706	$ 18,291	64,446	$ 49,691
Investment in MSC	98,338		98,338		108,326
MSC
Operating Segment Reporting
Revenue	70,396	47,081	123,699	84,471
Investment in MSC	98,338		98,338		108,326	$ 110,183
USA
Operating Segment Reporting
Long-lived Assets	42,435		42,435		46,801
Revenue	26,343	10,770	39,236	25,088
Canada
Operating Segment Reporting
Long-lived Assets	93,039		93,039		78,986
Revenue	12,178	4,166	20,739	16,905
Mexico
Operating Segment Reporting
Long-lived Assets	20,361		20,361		20,021
Revenue	2,185	$ 3,355	4,471	$ 7,698
Argentina
Operating Segment Reporting
Long-lived Assets	289,828		289,828		299,816
Argentina | MSC
Operating Segment Reporting
Investment in MSC	$ 98,300		$ 98,300		$ 108,300

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Amount of investment in equity method investee and investment in and advance to affiliate.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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