Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments And Contingencies [Abstract]

Schedule of Changes in Warranty Reserves

Changes in the Company’s warranty reserves are as follows:

	Year Ended December 31,
	2018			2017			2016
Balance, beginning of the period	$	2,427		$	1,788		$	1,894
Accruals		3,486			3,464			2,405
Usage		(3,472	)		(2,825	)		(2,511	)
Balance, end of the period	$	2,441		$	2,427		$	1,788