Interest Rate Swaps (Details 2) $ in Millions	9 Months Ended
Sep. 30, 2016 USD ($)
Derivative [Line Items]
Loss on Cash Flow Hedge Ineffectiveness	$ 0.6
Cumulative Fair Value of De-designated Cash Flow Hedges, Gross	$ 3.7
Forward-starting Interest Rate Swap 1 [Member]
Derivative [Line Items]
Forward-starting interest rate swap agreement, inception date	Oct. 01, 2015
Forward-starting interest rate swap agreement, effective date	Oct. 19, 2016
Forward-starting interest rate swap agreement, notional amount	$ 75.0
Forward-starting interest rate swap agreement, fixed interest rate	2.273%
Forward-starting interest rate swap agreement, termination date	Nov. 20, 2019
Forward-starting Interest Rate Swap 2 [Member]
Derivative [Line Items]
Forward-starting interest rate swap agreement, inception date	Oct. 01, 2015
Forward-starting interest rate swap agreement, effective date	Oct. 19, 2016
Forward-starting interest rate swap agreement, notional amount	$ 25.0
Forward-starting interest rate swap agreement, fixed interest rate	2.111%
Forward-starting interest rate swap agreement, termination date	Nov. 20, 2019
Forward-starting Interest Rate Swap 3 [Member]
Derivative [Line Items]
Forward-starting interest rate swap agreement, inception date	Oct. 01, 2015
Forward-starting interest rate swap agreement, effective date	Oct. 19, 2016
Forward-starting interest rate swap agreement, notional amount	$ 50.0
Forward-starting interest rate swap agreement, fixed interest rate	2.111%
Forward-starting interest rate swap agreement, termination date	Nov. 20, 2019
Forward-starting Interest Rate Swap 4 [Member]
Derivative [Line Items]
Forward-starting interest rate swap agreement, inception date	Jul. 06, 2016
Forward-starting interest rate swap agreement, effective date	Nov. 20, 2019
Forward-starting interest rate swap agreement, notional amount	$ 150.0
Forward-starting interest rate swap agreement, fixed interest rate	1.1425%
Forward-starting interest rate swap agreement, termination date	Nov. 20, 2020

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

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

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- Definition

Fixed interest rate related to the interest rate derivative.

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- Definition

Date the entity entered into the derivative contract, in CCYY-MM-DD format.

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Amount of decrease in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

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

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