SALE OF ASSET GROUP - Calculation of the Gain on the Sale (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net assets sold:
Gain on sale of asset group		$ 373,445	$ 0	$ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Caviar Business
Consideration received:
Cash	$ 310,000
Preferred Stock	100,000
Total gross proceeds received from sale of asset group	410,000
Net assets sold:
Intangible and other assets, net	8,659
Goodwill	4,221
Disposal costs and other adjustments	23,675
Total net assets sold	36,555
Gain on sale of asset group	$ 373,445