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Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Selected Quarterly Financial Data (Unaudited) [Abstract]

Selected Quarterly Financial Data

The following is a summary of the unaudited quarterly results of operations for the years ended December 31, 2018 and 2017 (in thousands, except per share data):

		2018 Quarter Ended
		March 31				June 30				September 30				December 31
Net sales		$	199,442			$	198,775			$	210,547			$	208,968
Gross profit			108,907				107,797				115,372				114,466
Income before taxes			8,457				8,410				11,204				12,338
Net income			6,313				6,214				8,352				9,429
Basic net earnings per share:
Common			0.30				0.30				0.40				0.46
Class A Common			0.28				0.28				0.38				0.44
Diluted net earnings per share:
Common			0.29				0.29				0.39				0.45
Class A Common			0.28				0.28				0.38				0.45

		2017 Quarter Ended
		March 31				June 30				September 30				December 31
Net sales		$	200,427			$	196,829			$	207,647			$	214,962
Gross profit			109,596				107,119				112,015				116,193
Income before taxes			9,740				9,694				9,719				14,070
Net income			5,986				6,185				5,983				2,921
Basic net earnings per share:
Common			0.28				0.29				0.28				0.14
Class A Common			0.27				0.28				0.27				0.13
Diluted net earnings per share:
Common			0.28				0.29				0.28				0.13
Class A Common			0.27				0.27				0.27				0.13