REAL ESTATE INVESTMENTS - Property Acquisitions (FY) (Details)	12 Months Ended
Dec. 31, 2019 USD ($)
Real Estate [Line Items]
Payments to acquire real estate	$ 176,660,507
Land
Real Estate [Line Items]
Payments to acquire real estate	45,649,596
Land \| Chevron Gas Station, San Jose
Real Estate [Line Items]
Payments to acquire real estate	3,787,021
Land \| Levins
Real Estate [Line Items]
Payments to acquire real estate	1,404,863
Land \| Chevron Gas Station, Roseville
Real Estate [Line Items]
Payments to acquire real estate	2,636,663
Land \| Island Pacific Supermarket
Real Estate [Line Items]
Payments to acquire real estate	676,981
Land \| Dollar General, Bakersfield
Real Estate [Line Items]
Payments to acquire real estate	1,099,458
Land \| Rite Aid
Real Estate [Line Items]
Payments to acquire real estate	3,939,724
Land \| PMI Preclinical
Real Estate [Line Items]
Payments to acquire real estate	4,774,497
Land \| EcoThrift
Real Estate [Line Items]
Payments to acquire real estate	2,300,717
Land \| GSA (MSHA)
Real Estate [Line Items]
Payments to acquire real estate	399,062
Land \| PreK San Antonio
Real Estate [Line Items]
Payments to acquire real estate	963,044
Land \| Dollar Tree
Real Estate [Line Items]
Payments to acquire real estate	159,829
Land \| Dinan Cars
Real Estate [Line Items]
Payments to acquire real estate	2,453,420
Land \| Solar Turbines
Real Estate [Line Items]
Payments to acquire real estate	2,483,960
Land \| Wood Group
Real Estate [Line Items]
Payments to acquire real estate	3,461,256
Land \| ITW Rippey
Real Estate [Line Items]
Payments to acquire real estate	787,945
Land \| Dollar General, Big Spring
Real Estate [Line Items]
Payments to acquire real estate	103,838
Land \| Gap
Real Estate [Line Items]
Payments to acquire real estate	2,076,754
Land \| L-3 Communications
Real Estate [Line Items]
Payments to acquire real estate	3,552,878
Land \| Sutter Health
Real Estate [Line Items]
Payments to acquire real estate	2,443,240
Land \| Walgreens
Real Estate [Line Items]
Payments to acquire real estate	1,832,430
Land \| Acquisitions, Excluding Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	41,337,580
Land \| Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	4,312,016
Buildings and Improvements
Real Estate [Line Items]
Payments to acquire real estate	133,340,311
Buildings and Improvements \| Chevron Gas Station, San Jose
Real Estate [Line Items]
Payments to acquire real estate	267,738
Buildings and Improvements \| Levins
Real Estate [Line Items]
Payments to acquire real estate	3,024,527
Buildings and Improvements \| Chevron Gas Station, Roseville
Real Estate [Line Items]
Payments to acquire real estate	1,011,908
Buildings and Improvements \| Island Pacific Supermarket
Real Estate [Line Items]
Payments to acquire real estate	1,883,330
Buildings and Improvements \| Dollar General, Bakersfield
Real Estate [Line Items]
Payments to acquire real estate	3,800,256
Buildings and Improvements \| Rite Aid
Real Estate [Line Items]
Payments to acquire real estate	2,902,365
Buildings and Improvements \| PMI Preclinical
Real Estate [Line Items]
Payments to acquire real estate	4,897,677
Buildings and Improvements \| EcoThrift
Real Estate [Line Items]
Payments to acquire real estate	3,249,509
Buildings and Improvements \| GSA (MSHA)
Real Estate [Line Items]
Payments to acquire real estate	2,713,014
Buildings and Improvements \| PreK San Antonio
Real Estate [Line Items]
Payments to acquire real estate	11,484,243
Buildings and Improvements \| Dollar Tree
Real Estate [Line Items]
Payments to acquire real estate	1,160,538
Buildings and Improvements \| Dinan Cars
Real Estate [Line Items]
Payments to acquire real estate	3,799,237
Buildings and Improvements \| Solar Turbines
Real Estate [Line Items]
Payments to acquire real estate	4,649,281
Buildings and Improvements \| Wood Group
Real Estate [Line Items]
Payments to acquire real estate	6,269,964
Buildings and Improvements \| ITW Rippey
Real Estate [Line Items]
Payments to acquire real estate	6,283,198
Buildings and Improvements \| Dollar General, Big Spring
Real Estate [Line Items]
Payments to acquire real estate	1,177,845
Buildings and Improvements \| Gap
Real Estate [Line Items]
Payments to acquire real estate	6,301,522
Buildings and Improvements \| L-3 Communications
Real Estate [Line Items]
Payments to acquire real estate	8,078,979
Buildings and Improvements \| Sutter Health
Real Estate [Line Items]
Payments to acquire real estate	27,111,815
Buildings and Improvements \| Walgreens
Real Estate [Line Items]
Payments to acquire real estate	3,391,012
Buildings and Improvements \| Acquisitions, Excluding Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	103,457,958
Buildings and Improvements \| Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	29,882,353
Tenant Origination and Absorption Costs
Real Estate [Line Items]
Payments to acquire real estate	9,548,791
Tenant Origination and Absorption Costs \| Chevron Gas Station, San Jose
Real Estate [Line Items]
Payments to acquire real estate	145,577
Tenant Origination and Absorption Costs \| Levins
Real Estate [Line Items]
Payments to acquire real estate	221,927
Tenant Origination and Absorption Costs \| Chevron Gas Station, Roseville
Real Estate [Line Items]
Payments to acquire real estate	136,415
Tenant Origination and Absorption Costs \| Island Pacific Supermarket
Real Estate [Line Items]
Payments to acquire real estate	197,495
Tenant Origination and Absorption Costs \| Dollar General, Bakersfield
Real Estate [Line Items]
Payments to acquire real estate	261,630
Tenant Origination and Absorption Costs \| Rite Aid
Real Estate [Line Items]
Payments to acquire real estate	420,441
Tenant Origination and Absorption Costs \| PMI Preclinical
Real Estate [Line Items]
Payments to acquire real estate	408,225
Tenant Origination and Absorption Costs \| EcoThrift
Real Estate [Line Items]
Payments to acquire real estate	273,846
Tenant Origination and Absorption Costs \| GSA (MSHA)
Real Estate [Line Items]
Payments to acquire real estate	243,307
Tenant Origination and Absorption Costs \| PreK San Antonio
Real Estate [Line Items]
Payments to acquire real estate	447,927
Tenant Origination and Absorption Costs \| Dollar Tree
Real Estate [Line Items]
Payments to acquire real estate	73,298
Tenant Origination and Absorption Costs \| Dinan Cars
Real Estate [Line Items]
Payments to acquire real estate	0
Tenant Origination and Absorption Costs \| Solar Turbines
Real Estate [Line Items]
Payments to acquire real estate	284,026
Tenant Origination and Absorption Costs \| Wood Group
Real Estate [Line Items]
Payments to acquire real estate	392,955
Tenant Origination and Absorption Costs \| ITW Rippey
Real Estate [Line Items]
Payments to acquire real estate	304,387
Tenant Origination and Absorption Costs \| Dollar General, Big Spring
Real Estate [Line Items]
Payments to acquire real estate	76,351
Tenant Origination and Absorption Costs \| Gap
Real Estate [Line Items]
Payments to acquire real estate	360,377
Tenant Origination and Absorption Costs \| L-3 Communications
Real Estate [Line Items]
Payments to acquire real estate	454,035
Tenant Origination and Absorption Costs \| Sutter Health
Real Estate [Line Items]
Payments to acquire real estate	1,616,610
Tenant Origination and Absorption Costs \| Walgreens
Real Estate [Line Items]
Payments to acquire real estate	335,945
Tenant Origination and Absorption Costs \| Acquisitions, Excluding Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	6,654,774
Tenant Origination and Absorption Costs \| Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	2,894,017
Above-Market Lease Intangibles
Real Estate [Line Items]
Payments to acquire real estate	764,531
Above-Market Lease Intangibles \| Chevron Gas Station, San Jose
Real Estate [Line Items]
Payments to acquire real estate	41,739
Above-Market Lease Intangibles \| Levins
Real Estate [Line Items]
Payments to acquire real estate	26,469
Above-Market Lease Intangibles \| Chevron Gas Station, Roseville
Real Estate [Line Items]
Payments to acquire real estate	24,432
Above-Market Lease Intangibles \| Island Pacific Supermarket
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Dollar General, Bakersfield
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Rite Aid
Real Estate [Line Items]
Payments to acquire real estate	186,297
Above-Market Lease Intangibles \| PMI Preclinical
Real Estate [Line Items]
Payments to acquire real estate	115,036
Above-Market Lease Intangibles \| EcoThrift
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| GSA (MSHA)
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| PreK San Antonio
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Dollar Tree
Real Estate [Line Items]
Payments to acquire real estate	10,180
Above-Market Lease Intangibles \| Dinan Cars
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Solar Turbines
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Wood Group
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| ITW Rippey
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Dollar General, Big Spring
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Gap
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| L-3 Communications
Real Estate [Line Items]
Payments to acquire real estate	0
Above-Market Lease Intangibles \| Sutter Health
Real Estate [Line Items]
Payments to acquire real estate	87,549
Above-Market Lease Intangibles \| Walgreens
Real Estate [Line Items]
Payments to acquire real estate	272,829
Above-Market Lease Intangibles \| Acquisitions, Excluding Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	764,531
Above-Market Lease Intangibles \| Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	0
Below-Market Lease Intangibles
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(12,642,722)
Below-Market Lease Intangibles \| Chevron Gas Station, San Jose
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Levins
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Chevron Gas Station, Roseville
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Island Pacific Supermarket
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(76,351)
Below-Market Lease Intangibles \| Dollar General, Bakersfield
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(41,739)
Below-Market Lease Intangibles \| Rite Aid
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| PMI Preclinical
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| EcoThrift
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(388,882)
Below-Market Lease Intangibles \| GSA (MSHA)
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(101,802)
Below-Market Lease Intangibles \| PreK San Antonio
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(28,504)
Below-Market Lease Intangibles \| Dollar Tree
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Dinan Cars
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Solar Turbines
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(108,928)
Below-Market Lease Intangibles \| Wood Group
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| ITW Rippey
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Dollar General, Big Spring
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(127,252)
Below-Market Lease Intangibles \| Gap
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(68,207)
Below-Market Lease Intangibles \| L-3 Communications
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(174,081)
Below-Market Lease Intangibles \| Sutter Health
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Walgreens
Real Estate [Line Items]
Payments to acquire below market lease intangibles	0
Below-Market Lease Intangibles \| Acquisitions, Excluding Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(1,115,746)
Below-Market Lease Intangibles \| Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire below market lease intangibles	(11,526,976)
Total
Real Estate [Line Items]
Payments to acquire real estate	176,660,507
Total \| Chevron Gas Station, San Jose
Real Estate [Line Items]
Payments to acquire real estate	4,242,075
Total \| Levins
Real Estate [Line Items]
Payments to acquire real estate	4,677,786
Total \| Chevron Gas Station, Roseville
Real Estate [Line Items]
Payments to acquire real estate	3,809,418
Total \| Island Pacific Supermarket
Real Estate [Line Items]
Payments to acquire real estate	2,681,455
Total \| Dollar General, Bakersfield
Real Estate [Line Items]
Payments to acquire real estate	5,119,605
Total \| Rite Aid
Real Estate [Line Items]
Payments to acquire real estate	7,448,827
Total \| PMI Preclinical
Real Estate [Line Items]
Payments to acquire real estate	10,195,435
Total \| EcoThrift
Real Estate [Line Items]
Payments to acquire real estate	5,435,190
Total \| GSA (MSHA)
Real Estate [Line Items]
Payments to acquire real estate	3,253,581
Total \| PreK San Antonio
Real Estate [Line Items]
Payments to acquire real estate	12,866,710
Total \| Dollar Tree
Real Estate [Line Items]
Payments to acquire real estate	1,403,845
Total \| Dinan Cars
Real Estate [Line Items]
Payments to acquire real estate	6,252,657
Total \| Solar Turbines
Real Estate [Line Items]
Payments to acquire real estate	7,308,339
Total \| Wood Group
Real Estate [Line Items]
Payments to acquire real estate	10,124,175
Total \| ITW Rippey
Real Estate [Line Items]
Payments to acquire real estate	7,375,530
Total \| Dollar General, Big Spring
Real Estate [Line Items]
Payments to acquire real estate	1,230,782
Total \| Gap
Real Estate [Line Items]
Payments to acquire real estate	8,670,446
Total \| L-3 Communications
Real Estate [Line Items]
Payments to acquire real estate	11,911,811
Total \| Sutter Health
Real Estate [Line Items]
Payments to acquire real estate	31,259,214
Total \| Walgreens
Real Estate [Line Items]
Payments to acquire real estate	5,832,216
Total \| Acquisitions, Excluding Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	151,099,097
Total \| Taylor Fresh Foods
Real Estate [Line Items]
Payments to acquire real estate	$ 25,561,410

REAL ESTATE INVESTMENTS - Property Acquisitions (FY) (Details)

12 Months Ended

Dec. 31, 2019

USD ($)

Real Estate [Line Items]

Payments to acquire real estate

$ 176,660,507

Land

Real Estate [Line Items]

Payments to acquire real estate

45,649,596

Land | Chevron Gas Station, San Jose