Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Forward Contracts and Related Fair Values

The dollar equivalent of the U.S. dollar forward exchange contracts and related fair values as of March 31, 2018 and December 31, 2017 were as follows:

	March 31, 2018			December 31, 2017
Notional amount	$	8,181		$	8,417
Fair value of asset (liability)	$	(388	)	$	45