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Product Warranties - Product Warranty Activities (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Product Warranty Liability [Line Items] |  |
Beginning balance | $ 10,399 | $ 10,104
Provision for product warranties | 6,062 | 5,184
Direct and other charges to warranty liability | (6,705) | (4,073)
Ending balance | 16,933 | $ 11,215
Electro Scientific Industries Inc [Member] |  |
Product Warranty Liability [Line Items] |  |
Assumed product warranty liability from ESI Merger | $ 7,177 |

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- Definition Liability for an extended product warranty acquired in a business acquisition. Does not include any liability for a standard warranty acquired in a business acquisition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(5) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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