|
Provision For Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Apr. 30, 2012
|
Apr. 30, 2011
|
Apr. 30, 2012
|
Apr. 30, 2011
|
|
| Provision For Income Taxes [Abstract] | ||||
| Maximum percentage of tax benefits realized upon ultimate settlement | 50.00% | |||
| Lapses in statute of limitations | $ 800 | $ 800 | ||
| Gross uncertain tax benefit reserve and related interest and penalties | 370 | 1,100 | ||
| Additions | 650 | 650 | ||
| Tax and interest paid to finalize Oregon tax audit | 100 | |||
| Effective income tax rate | 32.50% | 30.20% | 34.10% | 29.60% |
| Anticipated decrease in unrecognized tax benefits | 4,700 | |||
| Accrued interest and penalties related to unrecognized tax benefits | $ 1,200 | $ 1,200 | ||