XML 48 R36.htm IDEA: XBRL DOCUMENT v3.21.2
Derivatives - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Foreign Currency Forward Contracts | Cash Flow Hedge        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Maximum length of time hedged in cash flow hedge     12 months  
Pre-tax gain to be reclassified into earnings within the next 12 months $ 0   $ 0  
Foreign Exchange Forward And Option Contracts [Member] | Not Designated as Hedging Instrument, Economic Hedge [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Notional value of derivatives 4,200   $ 4,200  
Contract expiring terms     2021-10  
Gain (loss) from foreign currency forward and option contracts not designated as hedging instruments $ 83 $ (454) $ (101) $ 57