Summary Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

The Company's unaudited quarterly financial data is as follows (dollars in thousands, except for per share data):

	As of December 31, 2017
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	199,830	$	213,370	$	209,330	$	195,210
Gross profit	51,760		59,410		58,830		49,140
Net income (loss)	6,990		14,850		13,130		(4,010		)
Earnings (loss) per share—basic:
Net income (loss) per share	$	0.15	$	0.32	$	0.29	$	(0.09	)
Weighted average shares—basic	45,570,495		45,717,697		45,721,155		45,721,160
Earnings (loss) per share—diluted:
Net income (loss) per share	$	0.15	$	0.32	$	0.29	$	(0.09	)
Weighted average shares—diluted	45,908,958		45,922,416		46,029,361		45,721,160

	As of December 31, 2016
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	202,880	$	203,320	$	202,290	$	185,530
Gross profit	55,920		57,080		58,050		39,430
Net income (loss)(a)	8,300		10,480		8,780		(67,360		)
Earnings (loss) per share—basic:
Net income (loss) per share	$	0.18	$	0.23	$	0.19	$	(1.48	)
Weighted average shares—basic	45,278,990		45,429,851		45,435,936		45,484,485
Earnings (loss) per share—diluted:
Net income (loss) per share	$	0.18	$	0.23	$	0.19	$	(1.48	)
Weighted average shares—diluted	45,654,816		45,726,348		45,760,455		45,484,485

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^(a) Net loss for the fourth quarter of 2016 includes pre-tax goodwill and indefinite-lived intangible asset impairment charges of $98.9 million. See Note 7, "Goodwill and Other Intangible Assets", for further details.