Derivative Instruments - Location and Fair Value of Foreign Currency Sales Contracts Recorded on Condensed Consolidated Balance Sheets (Detail) - Foreign Currency Sales Contracts [Member] - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Receivables [Member]
Derivative [Line Items]
Fair value hedged items	$ (399)	$ (260)
Other Current Assets [Member]
Derivative [Line Items]
Fair value hedge contracts	356	677
Fair value hedged items	86	0
Other Noncurrent Assets [Member]
Derivative [Line Items]
Fair value hedge contracts	402	153
Other Current Liabilities [Member]
Derivative [Line Items]
Fair value hedge contracts	155	0
Fair value hedged items	54	323
Other Noncurrent Liabilities [Member]
Derivative [Line Items]
Fair value hedged items	$ 393	$ 95