FAIR VALUE OF FINANCIAL INSTRUMENTS - Measured on a Recurring Basis (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Fair value of assets
Cash Flow Hedge - Interest Rate Swap	$ 479,176	$ 651,722
Recurring basis
Fair value of assets
Total	479,176	651,722
Recurring basis \| Significant Other Observable Inputs (Level 2)
Fair value of assets
Total	479,176	651,722
Recurring basis \| Interest Rate Swap
Fair value of assets
Cash Flow Hedge - Interest Rate Swap	479,176	651,722
Recurring basis \| Interest Rate Swap \| Significant Other Observable Inputs (Level 2)
Fair value of assets
Cash Flow Hedge - Interest Rate Swap	$ 479,176	$ 651,722

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant