The per share per day amount of a dividend declared, but not paid, as of the financial reporting date.

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Lessor, Operating Lease, Maximum Term

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Lessor, Operating Lease, Number Of Renewal Terms

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Net Asset Value, Percentage

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Amount of lease payments to be received by lessor for operating lease.

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Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure.

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Net rentable area for properties owned.

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The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Number of stock bought back by the entity at the exercise price or redemption price.

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Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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SUBSEQUENT EVENTS - Narrative (Q2) (Details)					1 Months Ended				3 Months Ended		6 Months Ended		12 Months Ended
SUBSEQUENT EVENTS - Narrative (Q2) (Details)	Jul. 26, 2021 USD ($) ft² renewal_option $ / shares	Jul. 09, 2021 USD ($)	Jul. 07, 2021 USD ($)	Feb. 28, 2020 USD ($)	Aug. 13, 2021 USD ($) shares	Jan. 31, 2021 USD ($)	Jan. 27, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Jun. 30, 2021 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares	Aug. 04, 2021 $ / shares	May 05, 2021 $ / shares	Mar. 31, 2021 USD ($)	Mar. 29, 2021 USD ($)	Mar. 25, 2021 $ / shares	Feb. 25, 2021 $ / shares	Feb. 01, 2021 $ / shares	Jan. 22, 2021 $ / shares	Jun. 01, 2020 $ / shares	May 20, 2020 $ / shares	Jan. 18, 2018 $ / shares
Subsequent Event [Line Items]
Dividends								$ 705,596	$ 1,976,511	$ 3,270,291	$ 3,968,187	$ 7,459,393	$ 11,701,828	$ 10,585,519
Net asset value (in usd per share) \| $ / shares							$ 23.03	$ 21.01	$ 26.05		$ 26.05		$ 21.01	$ 30.48		$ 24.61							$ 21.01	$ 21.01	$ 30.00
Common stock redeemed during period													$ 17,576,261	$ 12,145,903
Disposal group, including discontinued operation, consideration								$ 31,096,403					31,096,403
Proceeds from sale of real estate investments														0
Credit facility								6,000,000	$ 3,000,000		$ 3,000,000		6,000,000	7,740,000
Total rental revenue over the course of remaining lease term								$ 151,296,862	$ 154,635,652		$ 154,635,652		151,296,862
Contract purchase price													$ 0	$ 24,820,410
New Credit Facility \| Line of Credit
Subsequent Event [Line Items]
Maximum borrowing capacity																		$ 22,000,000
Revolving Credit Facility, Working Capital \| New Credit Facility \| Line of Credit
Subsequent Event [Line Items]
Maximum borrowing capacity																		5,000,000
Retail
Subsequent Event [Line Items]
Disposal group, including discontinued operation, consideration																	$ 13,714,188
Subsequent Event
Subsequent Event [Line Items]
Dividends	$ 650,167			$ 620,788		$ 695,768
Daily distribution rate (in usd per share) \| $ / shares	$ 0.00287670																		$ 0.00287670	$ 0.00287670		$ 0.00287670
Annualized distribution rate (in usd per share) \| $ / shares	$ 1.05																		$ 1.05	$ 1.05		$ 1.05
Net asset value, percentage	4.30%																		4.56%	5.00%		5.00%
Net asset value (in usd per share) \| $ / shares	$ 24.61						$ 23.03								$ 26.05				$ 23.03	$ 21.01	$ 23.03	$ 21.01
Subsequent Event \| New Credit Facility \| Line of Credit
Subsequent Event [Line Items]
Maximum borrowing capacity																		22,000,000
Subsequent Event \| Revolving Credit Facility, Working Capital \| New Credit Facility \| Line of Credit
Subsequent Event [Line Items]
Repayments of line of credit		$ 1,500,000
Amount available		15,500,000
Maximum borrowing capacity		$ 5,000,000																$ 5,000,000
Subsequent Event \| Raising Cane's
Subsequent Event [Line Items]
Area of restaurant property \| ft²	3,800
Number of renewal options \| renewal_option	5
Operating leases extension	5 years
Maximum term	25 years
Total rental revenue over the course of remaining lease term	$ 1,600,672
Contract purchase price	$ 3,607,424
Subsequent Event \| Retail \| Dana
Subsequent Event [Line Items]
Disposal group, including discontinued operation, consideration			$ 10,000,000
Proceeds from sale of real estate investments			$ 4,975,334
Subsequent Event \| Common Class C
Subsequent Event [Line Items]
Common stock redeemed (in shares) \| shares					83,834		481,939
Common stock redeemed during period					$ 2,059,527		$ 10,375,064
Subsequent Event \| Common Class S
Subsequent Event [Line Items]
Common stock redeemed (in shares) \| shares					0		0