Fair Value Of Financial Instruments Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Variable rate debt	$ 1,090,084	$ 1,103,127
Fixed rate debt	375,460	375,723
Fair Value Measurement, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Variable rate debt	0	0
Fixed rate debt	341,710	383,223
Fair Value Measurement, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Variable rate debt	980,477	1,085,768
Fixed rate debt	0	0
Fair Value Measurement, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Variable rate debt	0	0
Fixed rate debt	0	0
Fair Value, Measurements, Recurring [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liability	30,114	19,807
Fair Value, Measurements, Recurring [Member] | Fair Value Measurement, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liability	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurement, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liability	30,114	19,807
Fair Value, Measurements, Recurring [Member] | Fair Value Measurement, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liability	$ 0	$ 0