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Derivatives and Fair Value Disclosures - Additional Information (Detail) - Interest Rate Swap [Member]					12 Months Ended
	Dec. 10, 2018 USD ($)	Feb. 28, 2018 USD ($)	Feb. 01, 2018 USD ($)	Jun. 02, 2017 USD ($)	Dec. 31, 2018 USD ($) DerivativeInstrument	Dec. 31, 2017 USD ($) DerivativeInstrument
Derivatives, Fair Value [Line Items]
Derivative, notional amount | $	$ 14,472,875	$ 21,586,250	$ 32,632,000	$ 15,996,125	$ 111,477,920	$ 68,935,006
Number of instruments | DerivativeInstrument					9	6
Derivative, fixed interest rate	2.89%	2.74%	2.74%	2.12%
Interest rate swap, floating rate, based on libor					2.04%
Maturity date	Feb. 16, 2024	Dec. 11, 2022	Dec. 31, 2025	May 16, 2025
Minimum [Member]
Derivatives, Fair Value [Line Items]
Derivative, fixed interest rate					1.52%
Maturity date					2020-09
Maximum [Member]
Derivatives, Fair Value [Line Items]
Derivative, fixed interest rate					2.89%
Maturity date					2025-12

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- Definition

Derivative Maturity Month And Year

+ References

No definition available.

+ Details

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- Definition

Interest Rate Swap Floating Rate Based On L I B O R

+ References

No definition available.

+ Details

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X

- 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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X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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X

- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

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X

- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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