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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Jan. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets |
|  | Weighted Average Life at 1/31/17 |  |  | January 31, 2017 |  |  | January 31, 2016 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
|  |  |  |  | (in thousands) |  |  |  |  |  | (in thousands) |  |  |  |
Goodwill |  |  |  |  |  | $ | 3,997 |  |  |  |  |  |  |  |  |  |  | $ | 4,155 |  |  |  |  |  |  |  |  |
Proprietary rights |  |  | 5.9 |  |  | $ | 5,810 |  |  | $ | (3,003 | ) |  |  | 2,807 |  |  | $ | 5,959 |  |  | $ | (2,645 | ) |  |  | 3,314 |
Customer relationships |  |  | 4.8 |  |  |  | 4,679 |  |  |  | (1,656 | ) |  |  | 3,023 |  |  |  | 4,633 |  |  |  | (1,006 | ) |  |  | 3,627 |
Patents |  |  | 5.9 |  |  |  | 1,608 |  |  |  | (558 | ) |  |  | 1,050 |  |  |  | 1,592 |  |  |  | (369 | ) |  |  | 1,223 |
Trade name |  |  | 9.3 |  |  |  | 884 |  |  |  | (27 | ) |  |  | 857 |  |  |  | 883 |  |  |  | (17 | ) |  |  | 866 |
Customer backlog |  |  | 0.0 |  |  |  | 20 |  |  |  | (20 | ) |  |  | — |  |  |  | 20 |  |  |  | (2 | ) |  |  | 18 |
Developed technology |  |  | 8.9 |  |  |  | 1,430 |  |  |  | (155 | ) |  |  | 1,275 |  |  |  | 1,430 |  |  |  | (12 | ) |  |  | 1,418 |
Amortizable intangible assets |  |  | $ | 14,431 |  |  | $ | (5,419 | ) |  | $ | 9,012 |  |  | $ | 14,517 |  |  | $ | (4,051 | ) |  | $ | 10,466 |
Future Estimated Amortization Expense Related to Amortizable Intangible Assets | As of January 31, 2017, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):
For fiscal years ending January 31: |  |  |  |
2018 |  | $ | 1,417 |
2019 |  |  | 1,417 |
2020 |  |  | 1,417 |
2021 |  |  | 1,273 |
2022 |  |  | 815 |
Thereafter |  |  | 2,673 |
Total |  | $ | 9,012 |

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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