LEASES - Direct Financing Leases (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases [Abstract]
Interest income on lease receivable	$ 4,623	$ 3,566
Interest income on deferred fees and costs, net	(318)	94
Total direct financing lease net interest income	4,305	$ 3,660
Leasing receivables
Lease receivables	299,445		$ 281,601
Unearned income	(39,179)		(36,669)
Deferred fees and costs	4,671		3,953
Net investment in direct financing leases	$ 264,937		$ 248,885

Amount of deferred selling profit from direct financing lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919379-209981

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Amount of lease income from variable lease payments, interest income on direct financing lease and after offset of loss recognized at commencement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121561866&loc=SL77919311-209978

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919372-209981

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=121640914&loc=SL77927221-108306

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Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term, guaranteed by lessee or other third party unrelated to lessor, from direct financing lease.

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- Definition

Amount of net investment in direct financing lease.

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Direct Financing Lease, Interest Income, Deferred Fees And Costs

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Direct Financing Lease, Interest Income, Lease Receivable

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Direct Financing Lease, Unearned Income

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