Derivative Financial Instruments (Narrative) (Details)	6 Months Ended
Jun. 30, 2017 USD ($) item	Dec. 31, 2016 USD ($)
Derivative [Line Items]
Number of interest rate cap transactions \| item	3
Term loan notional amount associated with interest rate cap derivative	$ 150,000,000
Interest rate cap notional value	150,000,000
Derivative Asset, Notional Amount	150,000,000	$ 150,000,000
Estimate that will be reclassified from AOCI as an increase to interest expense over the next twelve months	$ 200,000
Interest Rate Cap [Member]
Derivative [Line Items]
Number of interest rate cap transactions \| item	3
Term loan notional amount associated with interest rate cap derivative	$ 150,000,000
Interest rate cap notional value	$ 150,000,000
Interest Rate Strike	4.00%
Derivative, Cap Interest Rate	4.00%
Interest Rate Cap [Member] \| $50.0 Million Term Loan Maturing August 1, 2021 [Member]
Derivative [Line Items]
Term loan notional amount associated with interest rate cap derivative	$ 50,000,000
Interest Rate Strike	4.00%
Derivative Asset, Notional Amount	$ 50,000,000	50,000,000
Derivative, Cap Interest Rate	4.00%
Derivative, Inception Date	Dec. 01, 2014
Derivative, Maturity Date	May 01, 2021
Interest Rate Cap [Member] \| $50.0 Million Term Loan Maturing April 1, 2019 [Member]
Derivative [Line Items]
Interest Rate Strike	4.00%
Derivative Asset, Notional Amount	$ 50,000,000	50,000,000
Derivative, Cap Interest Rate	4.00%
Derivative, Inception Date	Sep. 01, 2015
Derivative, Maturity Date	Apr. 01, 2019
Interest Rate Cap [Member] \| $50.0 Million Term Loan Maturing February 3, 2020 [Member]
Derivative [Line Items]
Interest Rate Strike	4.00%
Derivative Asset, Notional Amount	$ 50,000,000	$ 50,000,000
Derivative, Cap Interest Rate	4.00%
Derivative, Inception Date	Sep. 01, 2015
Derivative, Maturity Date	Feb. 03, 2020
Interest Rate Cap [Member] \| Maximum [Member]
Derivative [Line Items]
Derivative, Range of Basis Spread on Variable Rate	1.85%
Interest Rate Cap [Member] \| Minimum [Member[
Derivative [Line Items]
Derivative, Range of Basis Spread on Variable Rate	1.30%

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

Number Of Interest Rate Cap Transactions

+ References

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- Definition

Term Loan Notional Amount Associated With Interest Rate Cap Derivative

+ References

No definition available.

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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=84234895&loc=SL5579245-113959

Reference 2: 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=84234895&loc=SL5580258-113959

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- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

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- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

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- Definition

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

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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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.

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- Definition

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

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