Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Narrative (Details)

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FAIR VALUE MEASUREMENTS - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Fair Value Disclosures [Abstract]  
Purchase of investments $ 5.0
Proceeds from sale of investments 4.4
Net loss on investment $ 0.6