BUSINESS COMBINATION - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
Aug. 30, 2019	Sep. 30, 2019	Sep. 30, 2020
Business Acquisition [Line Items]
Goodwill	$ 58.0	$ 58.0	$ 0.0
Bannockburn [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 114.6

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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