Limit of total operating expenses as a percent of average invested assets

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Limit of total operating expenses as a percent of net income for the four most recently completed fiscal quarters

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Offering Costs, Other than Selling Commissions and Dealer Manager Fees

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Organization and Offering Costs

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Other organization and offering costs.

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Reimbursable offering costs determination, gross offering costs, percentage.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount paid to managing member or general partner, affiliate of managing member or general partner, or affiliate of limited liability company (LLC) or limited partnership (LP) for administrative services provided to the LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

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Amount of transactions with related party during the financial reporting period.

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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.

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RELATED PARTY TRANSACTIONS - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Nov. 01, 2019
Related Party Transaction [Line Items]
Payment for administrative fees	$ 80	$ 49	$ 232	$ 139
Limit of total operating expenses as a percent of net income for the four most recently completed fiscal quarters	2.00%		2.00%
Limit of total operating expenses as a percent of average invested assets	25.00%		25.00%
Due to affiliates	$ 6,830		$ 6,830		$ 5,552
Private Placement
Related Party Transaction [Line Items]
Other organization and offering costs	1,500		1,500
KBS Capital Advisors LLC \| Public Offering
Related Party Transaction [Line Items]
Offering costs, other than selling commissions and dealer manager fees	4,400		4,400
Organization and offering costs	$ 39		$ 39
KBS Capital Advisors LLC \| Public Offering \| Minimum
Related Party Transaction [Line Items]
Reimbursable offering costs determination, gross offering costs, percentage	1.00%		1.00%
KBS Capital Advisors LLC \| Public Offering \| Maximum
Related Party Transaction [Line Items]
Reimbursable offering costs determination, gross offering costs, percentage	1.00%		1.00%
KBS Capital Advisors LLC \| Second Private Placement
Related Party Transaction [Line Items]
Amounts of transaction			$ 5,500
KBS Capital Advisors LLC \| GKP Holding LLC
Related Party Transaction [Line Items]
Ownership percentage						33.33%
Advisor and Dealer Manager
Related Party Transaction [Line Items]
Due to affiliates	$ 6,830		6,830		5,552
Amounts of transaction	544	572	2,008	1,673
Advisor and Dealer Manager \| Advisor advance for cash distributions
Related Party Transaction [Line Items]
Due to affiliates	1,338		1,338		$ 1,338
Amounts of transaction	$ 0	$ 0	$ 0	$ 0