The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_GainLossOnCashFlowHedgeIneffectivenessNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Derivative Instruments and Hedging Activities - Income Statement Items for Derivatives Designated as Hedging Instruments (Details 3) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Dec. 23, 2008	Jun. 30, 2012 Designated as hedging instruments [Member]	Jun. 30, 2011 Designated as hedging instruments [Member]	Jun. 30, 2012 Designated as hedging instruments [Member]	Jun. 30, 2011 Designated as hedging instruments [Member]	Jun. 30, 2012 Designated as hedging instruments [Member] Interest expense [Member] Interest rate swap [Member] Cash flow hedge [Member]	Jun. 30, 2011 Designated as hedging instruments [Member] Interest expense [Member] Interest rate swap [Member] Cash flow hedge [Member]	Jun. 30, 2012 Designated as hedging instruments [Member] Interest expense [Member] Interest rate swap [Member] Cash flow hedge [Member]	Jun. 30, 2011 Designated as hedging instruments [Member] Interest expense [Member] Interest rate swap [Member] Cash flow hedge [Member]
Derivative instruments designated as hedging instruments gain loss net [Abstract]
Interest rate swap - cash flow hedge - interest payments						$ 110	$ 120	$ 218	$ 237
Interest rate swap - cash flow hedge - ineffectiveness	0
Total		$ 110	$ 120	$ 218	$ 237