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Etratech Acquisition - Summary of Preliminary Allocation (Detail) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Nov. 01, 2017 | Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 70,439 |  | $ 69,685
Purchase price |  | $ 15 | $ 2,000 |
Etratech Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Accounts receivable | $ 12,654 |  |  |
Inventory | 7,014 |  |  |
Prepaid expenses and other assets | 535 |  |  |
Property and equipment | 6,205 |  |  |
Goodwill | 14,881 |  |  |
Assumed liabilities | (9,642) |  |  |
Net assets acquired | 65,009 |  |  |
Cash acquired | 670 |  |  |
Purchase price | 65,679 |  |  |
Etratech Inc. | Customer relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets | 24,774 |  |  |
Etratech Inc. | Technology |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets | $ 8,588 |  |  |

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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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