Derivative Financial Instruments (Schedule of Cash Flow Hedging Derivatives) (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Total Interest Rate Cap [Member]
Derivative [Line Items]
Fair Value Gain (Loss)	$ 338
Derivative, notional amount	796,500
Cash flow hedging \| Interest Rate Swap Fifty Million Notional September Two Thousand Sixteen Maturity [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	(548)
Derivative, notional amount	50,000
Cash flow hedging \| Interest Rate Swap Twenty Five Million Notional October Two Thousand Sixteen Maturity [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	(298)
Derivative, notional amount	25,000
Cash flow hedging \| Total Interest Rate Swaps [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	(846)
Derivative, notional amount	75,000
Cash flow hedging \| Interest Rate Cap Forty Three Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	1
Derivative, notional amount	43,500
Cash flow hedging \| Interest Rate Cap Two Hundred Sixteen Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	3
Derivative, notional amount	216,500
Cash flow hedging \| Interest Rate Cap Fifty Million Notional September Two Thousand Seventeen Maturity [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	128
Derivative, notional amount	50,000
Cash flow hedging \| Interest Rate Cap Forty Million Notional September Two Thousand Seventeen Maturity [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	110
Derivative, notional amount	40,000
Cash flow hedging \| Total Interest Rate Cap [Member] \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	242
Derivative, notional amount	350,000
Cash flow hedging \| Interest rate swaps and caps \| Designated as hedging instrument
Derivative [Line Items]
Fair Value Gain (Loss)	(604)
Derivative, notional amount	$ 425,000

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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No definition available.

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Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611

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