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Intangible Assets | 12 Months Ended
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Jan. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | Note 3—Intangible Assets Intangible assets are as follows:
|  | January 31, 2017 |  |  | January 31, 2016 |
(In thousands) |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Miltope: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer Contract Relationships |  | $ | 3,100 |  |  | $ | (1,108 | ) |  | $ | 1,992 |  |  | $ | 3,100 |  |  | $ | (758 | ) |  | $ | 2,342 |
RITEC: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer Contract Relationships |  |  | 2,830 |  |  |  | (207 | ) |  |  | 2,623 |  |  |  | 2,830 |  |  |  | (31 | ) |  |  | 2,799 |
Non-Competition Agreement |  |  | 950 |  |  |  | (301 | ) |  |  | 649 |  |  |  | 950 |  |  |  | (111 | ) |  |  | 839 |
Intangible assets, net |  | $ | 6,880 |  |  | $ | (1,616 | ) |  | $ | 5,264 |  |  | $ | 6,880 |  |  | $ | (900 | ) |  | $ | 5,980 |
There were no impairments to intangible assets during the periods ended January 31, 2017, 2016 and 2015. Amortization expense of $0.7 million; $0.5 million and $0.7 million with regard to acquired intangibles has been included in the consolidated statements of income for years ended January 31, 2017, 2016 and 2015, respectively. Estimated amortization expense for the next five years is as follows:
(In thousands) |  | 2018 |  |  | 2019 |  |  | 2020 |  |  | 2021 |  |  | 2022 |
Estimated amortization expense |  | $ | 774 |  |  | $ | 769 |  |  | $ | 803 |  |  | $ | 706 |  |  | $ | 633 |

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- Definition The entire disclosure for all or part of the information related to 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 1 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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