GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS - SUMMARY OF INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Cost	$ 21,600	$ 21,600
Accumulated Amortization	(9,053)	(7,733)
Identifiable Intangible Assets, Net	12,547	13,867
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Cost	2,400	2,400
Accumulated Amortization	(93)	(53)
Identifiable Intangible Assets, Net	2,307	2,347
AMA
Finite-Lived Intangible Assets [Line Items]
Gross Cost	19,200	19,200
Accumulated Amortization	(8,960)	(7,680)
Identifiable Intangible Assets, Net	$ 10,240	$ 11,520