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Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Intangible Assets, by category |  |  |  |  |
Gross Carrying Amount | $ 199,095 |  | $ 199,095 |  | $ 195,074
Accumulated Amortization | 159,123 |  | 159,123 |  | 153,507
Amortization expense for intangible assets | 1,280 | $ 2,050 | 2,598 | $ 4,155 |
Estimated amortization expense for next 5 years |  |  |  |  |
2017 | 5,000 |  | 5,000 |  |
2018 | 4,750 |  | 4,750 |  |
2019 | 4,500 |  | 4,500 |  |
2020 | 4,250 |  | 4,250 |  |
2021 | 4,000 |  | 4,000 |  |
Customer related |  |  |  |  |
Intangible Assets, by category |  |  |  |  |
Gross Carrying Amount | 150,373 |  | 150,373 |  | 146,840
Accumulated Amortization | 117,365 |  | 117,365 |  | 112,610
Patents |  |  |  |  |
Intangible Assets, by category |  |  |  |  |
Gross Carrying Amount | 5,783 |  | 5,783 |  | 5,729
Accumulated Amortization | 5,649 |  | 5,649 |  | 5,534
Technology related |  |  |  |  |
Intangible Assets, by category |  |  |  |  |
Gross Carrying Amount | 25,918 |  | 25,918 |  | 25,687
Accumulated Amortization | 25,907 |  | 25,907 |  | 25,634
Trade names |  |  |  |  |
Intangible Assets, by category |  |  |  |  |
Gross Carrying Amount | 8,312 |  | 8,312 |  | 8,306
Accumulated Amortization | 4,687 |  | 4,687 |  | 4,529
Other |  |  |  |  |
Intangible Assets, by category |  |  |  |  |
Gross Carrying Amount | 8,709 |  | 8,709 |  | 8,512
Accumulated Amortization | $ 5,515 |  | $ 5,515 |  | $ 5,200

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + 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)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + 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)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + 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)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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