Quarterly Result of Operations (Unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Result of Operations (Unaudited)

QUARTERLY RESULT OF OPERATIONS (UNAUDITED)

Quarter ended	March 31, 2017			June 30, 2017			September 30, 2017		December 31, 2017
Sales	$	81,562		$	82,682		$	90,250	$	106,423
Gross profit	43,749			46,760			52,034		62,094
Net (loss) income	(1,461		)	(3,625		)	1,628		(11,058		)
Net (loss) income per share:
Basic	$	(0.09	)	$	(0.22	)	$	0.10	$	(0.66	)
Diluted	$	(0.09	)	$	(0.22	)	$	0.10	$	(0.66	)

Quarter ended	March 31, 2016		June 30, 2016		September 30, 2016		December 31, 2016
Sales	$	75,748	$	78,538	$	79,600	$	91,698
Gross profit	42,671		43,934		42,678		48,677
Net income	3,080		3,392		1,090		3,545
Net income per share:
Basic	$	0.19	$	0.20	$	0.07	$	0.21
Diluted	$	0.19	$	0.20	$	0.07	$	0.21