BONDS AND BONDS INTEREST PAYABLE (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Less: deferred bond issuance costs	$ (7,342)	$ (9,428)
Accrued Interest	779	861
Bonds Series A [Member]
Total outstanding bonds	92,653	106,686
Nonconvertible Series B Bonds [Member]
Total outstanding bonds	39,844	36,740
Bonds (Series B expansion) [Member]
Total outstanding bonds	20,920	19,290
Bonds (Series C) [Member]
Total outstanding bonds	79,572
Bonds [Member]
Total outstanding bonds	232,989	162,716
Less: deferred bond issuance costs	(9,724)	(8,179)
Total outstanding bonds, net	223,265	154,537
Accrued Interest	6,457	4,037
Total oustanding bonds, net and accrued interest	$ 229,722	$ 158,574

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant