Accrued Warranty (Tables)

6 Months Ended

Jun. 30, 2018

Guarantees [Abstract]

Summary of Changes in Product Warranty Liability

	For the six months ended
	June 30,
	2018			2017
Balance January 1,	$	2,030		$	1,568
Accrual for warranties issued during the period		1,570			703
Warranty services provided		(1,446	)		(825	)
Changes in estimate		15			139
Foreign currency translation		13			10
Balance June 30,	$	2,182		$	1,595