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

Derivative, Number of Counterparties

+ References

No definition available.

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- Definition

Derivative, Outstanding Debt, Percentage Hedged

+ References

No definition available.

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=64837297&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.

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Derivative Instruments and Hedging Activities - Narrative (Details)	12 Months Ended
	Dec. 31, 2016 USD ($)	May 31, 2016 USD ($) counterparty	Dec. 31, 2015 USD ($)	Sep. 30, 2012 USD ($)
Interest Expense [Member]
Derivative [Line Items]
Amount reclassified as an increase to interest expense during next twelve months	$ 900,000
Interest Rate Swap, September 2012 [Member] \| Not Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Derivative [Line Items]
Amount of notional principal interest rate swap				$ 174,600,000.0
Notional amount of interest rate swaps	135,300,000		$ 152,800,000
Interest Rate Swap, May 2016 [Member] \| Not Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Derivative [Line Items]
Amount of notional principal interest rate swap		$ 256,600,000.0
Number of counterparties \| counterparty		3
Notional amount of interest rate swaps	$ 301,100,000
Percentage hedged	50.00%