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Financial Derivative Instruments (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Unamortized Premium	$ 4,565	$ 4,566
Fair Value	2,251	$ 3,455
Interest Rate Cap [Member]
Derivative [Line Items]
Notional Amount	90,000
Cap Interest Rate		3.00%
Premium Paid	1	$ 4,566
Fair Value	2,251	$ 3,455
Interest Rate Cap 1 [Member]
Derivative [Line Items]
Notional Amount	$ 25,000
Termination Date	Jun. 02, 2021
Cap Interest Rate	3.00%
Premium Paid	$ 922
Unamortized Premium	921
Fair Value	$ 327
Cash Flow Hedge Derivative Instrument Assets at Fair Value
Interest Rate Cap 2 [Member]
Derivative [Line Items]
Notional Amount	$ 20,000
Termination Date	Jun. 04, 2024
Cap Interest Rate	3.00%
Premium Paid	$ 1,470
Unamortized Premium	1,470
Fair Value	$ 688
Cash Flow Hedge Derivative Instrument Assets at Fair Value
Interest Rate Cap 3 [Member]
Derivative [Line Items]
Notional Amount	$ 20,000
Termination Date	Oct. 21, 2021
Cap Interest Rate	3.00%
Premium Paid	$ 632
Unamortized Premium	632
Fair Value	$ 297
Cash Flow Hedge Derivative Instrument Assets at Fair Value
Interest Rate Cap 4 [Member]
Derivative [Line Items]
Notional Amount	$ 25,000
Termination Date	Oct. 21, 2024
Cap Interest Rate	3.00%
Premium Paid	$ 1,542
Unamortized Premium	1,542
Fair Value	$ 939
Cash Flow Hedge Derivative Instrument Assets at Fair Value

X

- Definition

Derivative, Premium

+ References

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- Definition

Derivative , Unamortized Premium

+ References

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- Definition

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

+ References

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

Fair value of all asset derivatives designated as cash flow hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 4B



-Subparagraph (c)(1)



-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

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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

Fair value, after offset of derivative liability, of 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, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 20



-Section 55



-Paragraph 10



-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 20



-Section 55



-Paragraph 9



-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226006-175313



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 8



-Subparagraph (c)



-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41678-113959



Reference 4: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 20



-Section 50



-Paragraph 3



-Subparagraph (c)



-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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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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