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Subsequent Events - Additional Information (Detail) $ in Thousands |  | 6 Months Ended
--- | --- | ---
Jul. 09, 2018 USD ($) | Jul. 09, 2018 CHF (SFr) | Jun. 30, 2018 USD ($)
Subsequent Event [Line Items] |  |  |
Acquisition price paid on the closing date | $ |  |  | $ 1,289
Income tax benefit from new interpretation of tax law | $ |  |  | $ 1,500
Subsequent Event [Member] | S.NOW SA [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Acquisition date | Jul. 09, 2018 | Jul. 09, 2018 |
Percentage of shares acquired |  | 100.00% |
Initial purchase price |  | SFr 9,800,000 |
Acquisition price paid on the closing date | $ 8,500 | 8,360,000 |
Acquisition price due and subject to indemnity provisions from seller |  | SFr 1,500,000 |
Balance acquisition price payable period | 2 years | 2 years |
Maximum consideration payable based on the financial performance of acquired company |  | SFr 4,200,000 |

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to new interpretation of tax law. + References No definition available. + Details
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