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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