RELATED-PARTY TRANSACTIONS - Asset Management and Other Fees to Related Parties Narrative (Details)				3 Months Ended
	May 11, 2020	Apr. 09, 2020	Jan. 28, 2020	Mar. 31, 2021 subsidiary	Mar. 11, 2014 USD ($)
CIM Service Provider, LLC | Master Services Agreement
Related Party Transaction [Line Items]
Related party, fees payable per year under agreement | $					$ 1,000,000.0
Affiliated Entity | Master Services Agreement, Amendment, Quarterly Incentive Fee | CIM Service Provider, LLC
Related Party Transaction [Line Items]
Related party transaction, rate	15.00%
Affiliated Entity | Master Services Agreement, Amendment, Quarterly Incentive Fee, Threshold For Eligibility, Per Quarter | CIM Service Provider, LLC
Related Party Transaction [Line Items]
Related party transaction, rate	1.75%
Affiliated Entity | Master Services Agreement, Amendment, Quarterly Incentive Fee, Threshold For Eligibility, Annualized | CIM Service Provider, LLC
Related Party Transaction [Line Items]
Related party transaction, rate	7.00%
Affiliated Entity | Second Amended And Restated Dealer Manager Agreement, Upfront Dealer Manager Fee | CCO Capital, LLC
Related Party Transaction [Line Items]
Related party transaction, rate			1.25%
Affiliated Entity | Second Amended and Restated Dealer Manager Agreement, Selling Commissions Payable | CCO Capital, LLC
Related Party Transaction [Line Items]
Related party transaction, rate			5.50%
Affiliated Entity | Second Amended And Restated Dealer Manager Agreement, Trailing Dealer Manager Fee, Daily Accruing Rate Of Annual Rate | CCO Capital, LLC
Related Party Transaction [Line Items]
Related party transaction, rate			0.27%
Affiliated Entity | Second Amended And Restated Dealer Manager Agreement, Trailing Dealer Manager Fee, Annual | CCO Capital, LLC
Related Party Transaction [Line Items]
Related party transaction, rate			0.25%
Affiliated Entity | Second Amended and Restated Dealer Manager Agreement, Amendment No. 1, Selling Commissions Payable | CCO Capital, LLC
Related Party Transaction [Line Items]
Related party transaction, rate		7.00%
CIM Capital, LLC
Related Party Transaction [Line Items]
Number of subsidiaries | subsidiary				4
CCO Capital, LLC | Second Amended and Restated Dealer Manager Agreement, Amendment No. 1, Reallowance of Selling Commissions
Related Party Transaction [Line Items]
Related party transaction, rate		100.00%