Selected Quarterly Consolidated Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Selected Quarterly Consolidated Financial Data

	Three Months Ended
	Apr. 2, 2016			July 2, 2016			Oct. 1, 2016			Dec. 31, 2016
	(in thousands, except per share data)
Net sales	$	13,664		$	14,918		$	22,559		$	28,982
Gross profit		3,856			6,127			8,515			11,912
Net income (loss)		(6,305	)		(3,490	)		(481	)		2,835
Basic net income (loss) per share	$	(0.31	)	$	(0.17	)	$	(0.02	)	$	0.14
Diluted net income (loss) per share	$	(0.31	)	$	(0.17	)	$	(0.02	)	$	0.13

	Three Months Ended
	Apr. 4, 2015			July 4, 2015		Oct. 3, 2015			Jan. 2, 2016
	(in thousands, except per share data)
Net sales	$	19,885		$	20,458	$	18,418		$	16,398
Gross profit		6,922			7,806		4,912			6,677
Net income (loss)		(2,893	)		12		(3,759	)		(2,526	)
Basic and diluted net income (loss) per share	$	(0.12	)	$	—	$	(0.17	)	$	(0.12	)