This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 35
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=124268079&loc=d3e32787-111569

Name:	us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

INVESTMENTS - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
INVESTMENTS - Narrative (Details) - USD ($)	Jun. 30, 2021	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule of Equity Method Investments [Line Items]
Other than temporary impairments on equity method investments				$ 6,700,000
Other equity investments
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 4,200,000	$ 34,000,000.0	$ 4,200,000
Percentage of other equity investment sold		50.00%
Other than temporary impairments on equity method investments	$ 0	$ 6,700,000	$ 0