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Restructuring and Impairment Charges (Restructuring and Impairment Charges) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Restructuring and Impairment |  |  |  |
Restructuring charges | $ 397 |  | $ 700 |
Total Charges for Restructuring and Impairment |  | $ 3,567 | 734 | $ 0
Advanced Connectivity Solutions | Employee Severance |  |  |  |
Restructuring and Impairment |  |  |  |
Restructuring charges |  | 1,305 | 375 |
Advanced Connectivity Solutions | Asset Impairments |  |  |  |
Restructuring and Impairment |  |  |  |
Allocated asset impairment charges |  | 161 | 0 |
Elastomeric Material Solutions | Employee Severance |  |  |  |
Restructuring and Impairment |  |  |  |
Restructuring charges |  | 834 | 176 |
Elastomeric Material Solutions | Asset Impairments |  |  |  |
Restructuring and Impairment |  |  |  |
Allocated asset impairment charges |  | 103 | 0 |
Power Electronics Solutions | Employee Severance |  |  |  |
Restructuring and Impairment |  |  |  |
Restructuring charges |  | 621 | 183 |
Power Electronics Solutions | Asset Impairments |  |  |  |
Restructuring and Impairment |  |  |  |
Allocated asset impairment charges |  | $ 543 | $ 0 |

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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75025870&loc=d3e40691-111596 + Details
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