Goodwill and Net Intangible Assets - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | |||
|---|---|---|---|---|
Jan. 11, 2019 |
Apr. 30, 2019 |
Apr. 30, 2018 |
Jan. 31, 2019 |
|
| Business Acquisition [Line Items] | ||||
| Goodwill | $ 5,496 | $ 5,496 | ||
| Amortization expense | $ 208 | $ 127 | ||
| TernPro, Inc. | ||||
| Business Acquisition [Line Items] | ||||
| Percent of stock acquired | 100.00% | |||
| Total purchase price | $ 6,000 | |||
| Goodwill | 5,200 | |||
| Intangible assets | 800 | |||
| Other net assets | 100 | |||
| Long-term liability related to holdback | 1,000 | |||
| Acquired software technology | TernPro, Inc. | ||||
| Business Acquisition [Line Items] | ||||
| Intangible assets | 500 | |||
| Acquired customer relationships | TernPro, Inc. | ||||
| Business Acquisition [Line Items] | ||||
| Intangible assets | $ 300 | |||