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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Fair value of the gross assets less the gross liabilities of a derivative asset or group of derivative assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

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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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No definition available.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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-SubTopic 25

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-Paragraph 1

-Subparagraph (a)(1),(2)

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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-Publisher FASB

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-Number 133

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Fair value of the gross liabilities less the gross assets of a derivative liability or group of derivative liabilities.

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Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

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Financial Derivative Instruments (Details) (USD $)	3 Months Ended
Financial Derivative Instruments (Details) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financial Derivative Instruments [Abstract]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	$ 49,000
Derivatives, Fair Value [Line Items]
Derivative Assets	0		0
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2,179,000		0
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	26,000	0
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	21,000	0
Amount of Gain or (Loss) Recognized in Income On Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	7,000	0
Designated as Hedging Instrument [Member] \| Interest Expense [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	21,000	0
Amount of Gain or (Loss) Recognized in Income On Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	7,000	0
Designated as Hedging Instrument [Member] \| Derivative Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0		0
Designated as Hedging Instrument [Member] \| Derivative Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2,179,000		0
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0		2,432,000
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	0	0
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	0	0
Amount of Gain or (Loss) Recognized in Income On Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	47,000
Not Designated as Hedging Instrument [Member] \| Interest Expense [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	0	0
Amount of Gain or (Loss) Recognized in Income On Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	47,000
Not Designated as Hedging Instrument [Member] \| Derivative Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0		0
Not Designated as Hedging Instrument [Member] \| Derivative Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0		2,432,000
Interest Rate Swap September 2014 [Member]
Interest-Rate Swap Agreement [Line Items]
Coverage Amount	24,000,000
Variable Interest Rate (in hundredths)	1.66%
Interest Rate Swap March 2015 [Member]
Interest-Rate Swap Agreement [Line Items]
Coverage Amount	24,000,000
Variable Interest Rate (in hundredths)	1.91%
Interest Rate Swap September 2015 [Member]
Interest-Rate Swap Agreement [Line Items]
Coverage Amount	$ 24,000,000
Variable Interest Rate (in hundredths)	2.14%