Warranty Liability (Tables)

6 Months Ended

Jun. 30, 2018

Warranty Liability

Schedule of rollforward of Company's warranty liability

	Three Months Ended				Six Months Ended
	June 30,		June 30,		June 30,		June 30,
	2018		2017		2018		2017
Balance at the beginning of the period	$	4,630	$	5,281	$	5,677	$	6,160
Establish warranty provision for Arrowhead		-		65		-		65
Warranty provision		1,109		937		1,771		1,563
Claims paid/settlements		(563)		(708)		(2,272)		(2,213)
Balance at the end of the period	$	5,176	$	5,575	$	5,176	$	5,575