Goodwill and Other Intangibles Narrative (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jan. 31, 2017 |
Jan. 31, 2016 |
Jan. 31, 2017 |
Jan. 31, 2016 |
Jul. 31, 2016 |
|
| Goodwill and Intangible Assets Disclosure [Abstract] | |||||
| Amortization of intangible assets | $ 307,000 | $ 364,000 | $ 612,000 | $ 727,000 | |
| Amortization expense for remainder of current fiscal year | 612,000 | 612,000 | |||
| Indefinite-lived trademarks | $ 376,000 | $ 376,000 | |||
| Goodwill impairment loss | $ 0 | ||||