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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Jan. 31, 2013
Goodwill and Other Intangible Assets [Abstract] |
Goodwill and Other Intangible Assets |
|  | Weighted Average Life at 1/31/13 |  |  | January 31, 2013 |  |  | January 31, 2012 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
|  |  |  |  | (in thousands) |  |  | (in thousands) |
Goodwill |  |  |  |  |  | $ | 4,320 |  |  |  |  |  |  |  |  |  |  | $ | 4,320 |  |  |  |  |  |  |  |  |
Proprietary rights |  |  | 7.4 |  |  | $ | 3,503 |  |  | $ | (1,625 | ) |  |  | 1,878 |  |  | $ | 3,532 |  |  | $ | (1,347 | ) |  | $ | 2,185 |
Customer relationships |  |  | 5.1 |  |  |  | 2,402 |  |  |  | (876 | ) |  |  | 1,526 |  |  |  | 2,387 |  |  |  | (572 | ) |  |  | 1,815 |
Patents |  |  | 5.1 |  |  |  | 724 |  |  |  | (264 | ) |  |  | 460 |  |  |  | 719 |  |  |  | (172 | ) |  |  | 547 |
Trade name |  |  | 5.1 |  |  |  | 197 |  |  |  | (72 | ) |  |  | 125 |  |  |  | 196 |  |  |  | (47 | ) |  |  | 149 |
Amortizable intangible assets |  |  |  |  |  | $ | 6,826 |  |  | $ | (2,837 | ) |  | $ | 3,989 |  |  | $ | 6,834 |  |  | $ | (2,138 | ) |  | $ | 4,696 |
Future estimated amortization expense related to amortizable intangible assets |
For fiscal years ending January 31: |  |  |  |
2014 |  | $ | 671 |
2015 |  |  | 671 |
2016 |  |  | 671 |
2017 |  |  | 671 |
2018 |  |  | 671 |
Thereafter |  |  | 634 |
Total |  | $ | 3,989 |

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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 No definition available. + Details
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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=14024403&loc=d3e13816-109267 + Details
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