No definition available.

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- Definition

It represents about maximum limit on issuance of debt.

+ References

No definition available.

+ Details

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- Definition

It represents about the percentage of maximum limit on issuance of debt.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Area of land held.

+ References

No definition available.

+ Details

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Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The name of the original debt issue that has been converted in a noncash (or part noncash) transaction during the accounting period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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

- Definition

The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644

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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-Name Accounting Standards Codification
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-Subparagraph (SX 210.7-03(16))
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-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

+ Details

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

- Definition

Description of the contractual payment terms of the loan receivable including whether principal and interest is payable at a level or varying amount over the life of the loan, the amount of any balloon payment required at maturity, and any prepayment penalties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.5)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of large payment to be received at final maturity date of mortgage loans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.5)
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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585

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Balance Type:	debit
Period Type:	duration

- Definition

For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Bank Debt (Details Textual)	3 Months Ended				12 Months Ended
Bank Debt (Details Textual)	Mar. 31, 2017 USD ($) ft² CreditFacilities	Mar. 31, 2016 USD ($) CreditFacilities	Sep. 30, 2015 USD ($)	Sep. 30, 2010 USD ($)	Dec. 31, 2017 USD ($) CreditFacilities	Dec. 31, 2016 USD ($)	Mar. 31, 2018 USD ($)
Bank Debt (Textual)
Number of credit facilities \| CreditFacilities					5
Debt issue costs					$ 66,101	$ 46,734
Subsequent Event [Member]
Bank Debt (Textual)
Credit facility aggregate value							$ 500,000
Credit facilities [Member]
Bank Debt (Textual)
Number of credit facilities \| CreditFacilities	2	2
Credit facility aggregate value	$ 6,500,000	$ 4,500,000			$ 500,000
Variable interest rate with LIBOR, description					These notes bear interest at a variable rate equal to the one-month LIBOR plus a margin of 2.25%.
Variable interest rate					3.611%
Debt issue costs	66,100	$ 46,734	$ 34,125	$ 26,489
Interest rate swaps [Member]
Bank Debt (Textual)
Variable interest rate with LIBOR, description					Interest rate exposures on Loan #1 and Loan #2 with interest rate swap agreements that effectively converted floating interest rates based on the one-month LIBOR plus a margin of 3.25% and 2.25% to the fixed rates of 6.04% and 4.38%, respectively.
Original notional amount					$ 2,947,345
Interest rate swaps [Member] \| Loan One [Member]
Bank Debt (Textual)
Variable interest rate					4.71%
Original notional amount					$ 1,000,000
Interest rate swaps [Member] \| Mortgage Loan Two [Member]
Bank Debt (Textual)
Variable interest rate					3.76%
Original notional amount					$ 2,500,000
TD Bank N.A [Member] \| Loan One [Member]
Bank Debt (Textual)
Maximum limit on issuance of loan, rate				80.00%
Proceeds from issuance of loan				$ 1,000,000
Interest payments, term				10 years
Loan amortization, term				15 years
Balloon principal payment				$ 451,885
Balloon principal payment due, description				Due during the third quarter of 2020.
Outstanding amount of loan					627,480
TD Bank N.A [Member] \| Mortgage Loan Two [Member]
Bank Debt (Textual)
Proceeds from issuance of loan			$ 2,500,000
Interest payments, term			10 years
Loan amortization, term			20 years
Balloon principal payment			$ 1,550,000
Balloon principal payment due, description			Due during the third quarter of 2025.
Outstanding amount of loan					$ 2,319,865
TD Bank N.A [Member] \| Construction Loan Three [Member]
Bank Debt (Textual)
Maximum limit on issuance of loan, rate					80.00%
Proceeds from issuance of loan					$ 3,940,000
Loan amortization, term					7 years
Outstanding amount of loan					$ 3,513,501
Variable interest rate with LIBOR, description					Variable rate equal to the one-month LIBOR (adjusted at each monthly payment date) plus a margin of 2.25% (which was equal to 3.611% as of December 31, 2017) through September 2018
Loan conversion, term					7 years
Loan amount available to withdrawn					$ 426,499
TD Bank N.A [Member] \| Construction Loan Four [Member]
Bank Debt (Textual)
Maximum limit on issuance of loan, description					Not to exceed 80% (75% prior to the 2017 amendments).
Proceeds from issuance of loan					$ 2,560,000
Interest payments, term					10 years
Loan amortization, term					20 years
Balloon principal payment					$ 1,620,000
Balloon principal payment due, description					Due during the first quarter of 2027.
Outstanding amount of loan					$ 2,292,859
Variable interest rate with LIBOR, description					Variable rate equal to the one-month LIBOR (adjusted at each monthly payment date) plus a margin of 2.25% (which was equal to 3.611% as of December 31, 2017) through March 2018
TD Bank N.A [Member] \| Construction Loan Four [Member] \| Subsequent Event [Member]
Bank Debt (Textual)
Loan amount available to withdrawn							$ 267,141
TD Bank N.A [Member] \| Mortgage Loan Five [Member]
Bank Debt (Textual)
Proceeds from issuance of loan	$ 340,000
Interest payments, term	10 years
Loan amortization, term	20 years
Balloon principal payment	$ 199,000
Balloon principal payment due, description	Due during the first quarter of 2027.
Outstanding amount of loan					$ 331,388
Variable interest rate with LIBOR, description	Variable rate equal to the one-month LIBOR (adjusted at each monthly payment date) plus a margin of 2.25% (which was equal to 3.741% as of December 31, 2017)
Warehouse and storage facility \| ft²	4,114
TD Bank N.A [Member] \| Credit facilities [Member]
Bank Debt (Textual)
Credit facility aggregate value				$ 500,000
Variable interest rate with LIBOR, description				Interest on borrowings against the line of credit is variable at the higher of 4.25% per annum or the one-month LIBOR plus 3.5% per annum.