| **Disclosures About Fair Value of Assets and Liabilities - Transfer Between Levels 1, 2 and 3 and Reasons For Those Transfers (Details) (USD $)In Thousands, unless otherwise specified** | 3 Months Ended                                                                                                                                        | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                            | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended |
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| **Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]**                                                                                          |                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                      |           |           |           |           |           |           |           |           |   |   |   |   |
| Transfer between Levels 1, 2 and 3                                                                                                                                                        |                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                      | $ (3,905)      | $ 12,205       | $ (3,905)      | $ 4,862        | $ 409          | $ 6,934        | $ 3,905        | $ (12,205)     | $ 3,905 | $ (4,862) | $ (409) | $ (6,934) |
| Reason for Transfer                                                                                                                                                                       | Selected state and municipal securities were transferred from Level 2 to Level 3 due to limited availability of similar securities in active markets. | The interest rate swap and cap instruments were transferred from Level 3 to Level 2 as of March 31, 2012 due to the availability of additional valuation information. These instruments are valued using widely accepted valuation techniques including discounted cash flow analysis using observable inputs such as contractual terms and LIBOR-based rate curves. |           |           |           |           |           |           |           |           |   |   |   |   |

| X                                                                                                                                                                                                                 |
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| - Details**Name:**us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Disclosures concerning the reasons for transfers out of Level 3 of the fair value hierarchy.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258
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| X                                                                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.
+ References
No definition available.
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