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Other Income (Loss), Net - Schedule of Other Income (Loss) (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Long Lived Assets Held-for-sale [Line Items] |  |  |
Interest income | $ 3,596 | $ 2,827 | $ 1,525
(Loss) gain on asset dispositions, net | (557) | 593 | 1,724
Other, net | (1,249) | 710 | 836
Disposal of non-core product lines | 0 | 0 | (4,223)
Impairment of intangible assets | 0 | 0 | (723)
Total other income (loss), net | $ 1,790 | $ 4,130 | (861)
Safety Works |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |
Impairment of intangible assets |  |  | (700)
Property in Australia |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |
(Loss) gain on asset dispositions, net |  |  | 2,000
Americas | Safety Works |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |
Disposal of non-core product lines |  |  | $ (4,200)

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- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2941-110230 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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