Derivative Instruments and Hedging Activities (Schedule of the Notional Amount and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Fair Value of Asset	$ 0	$ 61
Fair Value of (Liability)	(9,049)	(2,641)
Interest Rate Swaps [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Outstanding Notional Amount	543,966	424,002
Other Assets [Member] \| Interest Rate Swaps [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Asset	0	61
Accounts Payable and Other Liabilities [Member] \| Interest Rate Swaps [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Fair Value of (Liability)	$ (9,049)	$ (2,641)
Minimum [Member] \| Interest Rate Swaps [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Effective Dates	Oct. 12, 2012
Maturity Dates	Oct. 11, 2017
Maximum [Member] \| Interest Rate Swaps [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Effective Dates	May 03, 2016
Maturity Dates	Aug. 21, 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

+ Details

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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- Definition

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

+ References

No definition available.

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

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- Definition

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

+ References

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- Definition

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+ References

No definition available.

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