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Acquisition - Additional Information (Detail) - USD ($) $ in Millions | Jul. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 68.5 |  |
Staging Concepts Acquisition, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Certain assets and liabilities acquired | $ 71.8 |  |  |
Goodwill | $ 57.9 |  |  |
Goodwill expected to be amortized and deductible for tax purposes |  | $ 3.9 | $ 3.9 | $ 1.6

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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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