For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

BUSINESS SEGMENT DATA - Description (Details)	12 Months Ended
BUSINESS SEGMENT DATA - Description (Details)	Dec. 31, 2021 property loan segment	Dec. 31, 2020	Dec. 31, 2019
Business segment data
Number of operating segment \| segment	4
Number of commercial loan investment	2
Commercial loan and master lease investments
Business segment data
Number of commercial loan investment	2
Number of commercial properties \| property	2
Product concentration \| Identifiable Assets [Member] \| Income Properties
Business segment data
Percentage of total	86.00%	80.00%
Product concentration \| Base Rent Revenues \| Income Properties
Business segment data
Percentage of total	72.10%	88.60%	93.40%