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Loans Payable - Schedule of Consolidated Notes Payable (Detail) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Loans payable	$ 29,394,770	$ 27,363,442
Loans Payable [Member] | Note 1- Monaco 2014 [Member]
Debt Instrument [Line Items]
Loans payable	2,800,000	2,800,000
Loans Payable [Member] | Note 2 - Monaco 2016 [Member]
Debt Instrument [Line Items]
Loans payable	1,175,000	1,138,441
Loans Payable [Member] | Note 3 - MINOSA 1 [Member]
Debt Instrument [Line Items]
Loans payable	14,750,001	14,750,001
Loans Payable [Member] | Note 4 - Epsilon [Member]
Debt Instrument [Line Items]
Loans payable	1,000,000	1,000,000
Loans Payable [Member] | Note 5 - SMOM [Member]
Debt Instrument [Line Items]
Loans payable	3,500,000	3,000,000
Loans Payable [Member] | Note 6 - MINOSA 2 [Member]
Debt Instrument [Line Items]
Loans payable	5,050,000	$ 4,675,000
Loans Payable [Member] | Note 7 - Monaco 2018 [Member]
Debt Instrument [Line Items]
Loans payable	1,099,366
Loans Payable [Member] | Note 8 - Promissory Note [Member]
Debt Instrument [Line Items]
Loans payable	$ 20,403

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16)(a)(2))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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