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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jan. 01, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2019
Summary Of Significant Accounting Policy [Line Items] |  |  |  |
Life insurance proceeds received |  |  |  | $ 1,000
Operating lease, right-of-use asset | $ 10,322 | $ 8,838 |  | 8,838
Operating lease, right-of-use liability | 10,322 | 8,863 |  | 8,863
ASU 2018-02 [Member] |  |  |  |
Summary Of Significant Accounting Policy [Line Items] |  |  |  |
Reclassification of tax effects related to adoption ASU | $ 400 |  |  |
Errors in Operating Activity [Member] |  |  |  |
Summary Of Significant Accounting Policy [Line Items] |  |  |  |
Amount of revision |  |  | $ 1,000 |
Out-of-Period Adjustment [Member] |  |  |  |
Summary Of Significant Accounting Policy [Line Items] |  |  |  |
Increase (decrease) in cost of goods sold |  | 800 |  | (200)
Increase (decrease) in excess and obsolete inventory reserve |  | $ 800 |  | $ (200)

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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