| Component: (Network and Table) | |
|---|---|
| Network | 40602 - Disclosure - Other Intangible Assets (Schedule Of Estimated Future Amortization Expense) (Details) (http://www.arinet.com/role/DisclosureOtherIntangibleAssetsScheduleOfEstimatedFutureAmortizationExpenseDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000879796 (http://www.sec.gov/CIK) |
| Other Intangible Assets [Abstract] | Period [Axis] | ||
|---|---|---|---|
2016-07-31 | 2015-07-31 | 2014-07-31 | |
Other Intangible Assets [Abstract] | |||
2017 | 1,417,000 | ||
2018 | 1,099,000 | ||
2019 | 956,000 | ||
2020 | 737,000 | ||
2021 | 606,000 | ||
Thereafter | 3,075,000 | ||
Amortizable Intangible Assets, Net Value | 7,890,000 | 10,116,000 | 3,612,000 |