Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Statement of comprehensive income (parentheticals)
Taxes due to change in non-controlling interest's protion of accumulated other comprehensive income due to issuance of Partnership unit				$ 68
Taxes on hedging losses reclassified to earnings	70	32	108	172
Taxes on adjustment in fair value of derivatives	$ (14)	$ 61	$ (152)	$ 102

Tax effect on reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 25

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