Derivative Instruments - Additional Information (Detail) $ in Millions	Mar. 31, 2016 USD ($) agreement	Feb. 29, 2016 USD ($) agreement
Interest rate swap
Derivative [Line Items]
Number of interest rate derivatives held		9
Interest Rate Swap, October 2016 Through December 2020
Derivative [Line Items]
Number of interest rate derivatives held		4
Notional amount \| $		$ 50.0
Interest rate swaps fixed rate		1.462%
Interest Rate Swap, Q1 2016 Through January 2021
Derivative [Line Items]
Number of interest rate derivatives held	5
Interest Rate Swap, Q1 2016 Through January 2021, $75 Million Notional Amount
Derivative [Line Items]
Number of interest rate derivatives held	1
Notional amount \| $	$ 75.0
Interest rate swaps fixed rate	1.549%
Interest Rate Swap, Q1 2016 Through January 2021, $50 Million Notional Amount
Derivative [Line Items]
Number of interest rate derivatives held	1
Notional amount \| $	$ 50.0
Interest rate swaps fixed rate	1.155%
Interest Rate Swap, Q1 2016 Through January 2021, $25 Million Notional Amount
Derivative [Line Items]
Number of interest rate derivatives held	3
Notional amount \| $	$ 25.0
Interest rate swaps fixed rate	1.549%

Fixed interest rate related to the interest rate derivative.

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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.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-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

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-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

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ 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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