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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Customer Revenue and Accounts Receivable Concentrations) (Detail) - Customer Concentration Risk [Member]	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Customer A [Member]
Concentration Risk [Line Items]
Concentration risk, percentage			23.00%
Sales Revenue, Net [Member] | Customer A [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	18.00%
Sales Revenue, Net [Member] | Customer B [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%
Accounts Receivable [Member] | Customer B [Member]
Concentration Risk [Line Items]
Concentration risk, percentage				17.00%
Accounts Receivable [Member] | Customer C [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		10.00%		12.00%
Accounts Receivable [Member] | Customer D [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		10.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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