|
Subsequent Event (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Mar. 31, 2012
|
Apr. 19, 2012
|
|
| Subsequent Event [Line Items] | ||
| Revolving credit agreement initiation date | Apr. 19, 2012 | |
| Borrowing limit under the unsecured revolving credit facility | $ 100 | |
| Basis spread on variable interest rate | 0.50% | |
| Covenant terms, debt coverage ratio | 1.75 | |
| Covenant terms, interest coverage ratio | 3.50 | |
|
Standby Letters Of Credit [Member]
|
||
| Subsequent Event [Line Items] | ||
| Borrowing limit under the unsecured revolving credit facility | $ 15 |
| X | ||||||||||
|
- Definition
Line Of Credit Facility, Covenant Terms, Debt Coverage Ratio Requirement No definition available.
|
| X | ||||||||||
|
- Definition
Line Of Credit Facility, Covenant Terms, Interest Coverage Ratio Requirement No definition available.
|
| X | ||||||||||
|
- Definition
The percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
|
| X | ||||||||||
|
- Definition
Date the credit facility first became available, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|