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Intangible Assets, Net - Summary of Carrying Amount of Intangible Assets by Segment (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items] |  |  |
Beginning balance | $ 376,248 | $ 376,248 | $ 237,702
Amortization |  | (46,998) | (32,553)
Currency impacts and other | 10 |  | (14)
Intangible assets subject to amortization |  |  | 171,113
Ending balance |  | 329,260 | 376,248
Life Sciences |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Beginning balance | 244,365 | 244,365 | 93,226
Amortization |  | (32,525) | (18,074)
Currency impacts and other | 7 |  | 0
Intangible assets subject to amortization |  |  | 169,213
Ending balance |  | 211,847 | 244,365
Mobile Solutions |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Beginning balance | 35,892 | 35,892 | 39,446
Amortization |  | (3,479) | (3,540)
Currency impacts and other | 3 |  | (14)
Intangible assets subject to amortization |  |  | 0
Ending balance |  | 32,416 | 35,892
Power Solutions |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Beginning balance | 95,991 | 95,991 | 105,030
Amortization |  | (10,994) | 10,939
Currency impacts and other | $ 0 |  | 0
Intangible assets subject to amortization |  |  | 1,900
Ending balance |  | $ 84,997 | $ 95,991

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=116868840&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References No definition available. + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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