Selected Quarterly Financial Information (unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Selected Quarterly Financial Information (unaudited)

Schedule of unaudited quarterly financial data

	Fiscal 2018								Fiscal 2017
	Q1		Q2		Q3		Q4		Q1		Q2		Q3		Q4
	(in thousands, except per share amounts)
Net sales	$	158,574	$	157,779	$	126,757	$	98,972	$	94,499	$	112,218	$	129,308	$	139,661
Gross profit		56,680		55,395		46,385		35,259		34,500		35,847		50,529		55,352
Net income (loss)		(15,827)		(237,634)		(8,953)		(144,674)		1,640		(20,817)		(23,740)		(8,479)
Basic income (loss) per common share		(0.34)		(5.02)		(0.19)		(3.11)		0.04		(0.49)		(0.51)		(0.18)
Diluted income (loss) per common share		(0.34)		(5.02)		(0.19)		(3.11)		0.04		(0.49)		(0.51)		(0.18)