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Derivative Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Interest Rate Swap, maturing in December 2014
Derivative Financial Instruments
Notional Amount	$ 9,140
Fixed Interest Rate (as a percent)	6.50%
Interest Rate Swap, maturing in November 2020
Derivative Financial Instruments
Notional Amount	4,368
Fixed Interest Rate (as a percent)	5.75%
Interest Rate Swap, maturing in August 2016
Derivative Financial Instruments
Notional Amount	3,930
Fixed Interest Rate (as a percent)	4.75%
Interest Rate Swap, maturing in February 2019
Derivative Financial Instruments
Notional Amount	5,820
Fixed Interest Rate (as a percent)	4.63%
Interest Rate Swap, maturing in April 2016
Derivative Financial Instruments
Notional Amount	2,180
Fixed Interest Rate (as a percent)	4.50%
Interest rate swap, maturing in March 2017
Derivative Financial Instruments
Notional Amount	$ 3,936
Fixed Interest Rate (as a percent)	4.50%

X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

+ 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=7476318&loc=SL5579245-113959



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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104



Reference 3: 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=7476318&loc=SL5580258-113959

+ Details

Name:	us-gaap_NotionalAmountOfInterestRateCashFlowHedgeDerivatives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant