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Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 31, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Total net sales	$ 169,260	$ 145,705	$ 130,264	$ 123,639	$ 105,139	$ 94,999	$ 96,329	$ 114,039	$ 568,868	$ 410,506	$ 495,635
Gross profit	64,195	51,152	40,085	36,009	24,782	19,867	22,302	32,597	191,441	99,548	134,358
Net income	$ 31,713	$ 24,753	$ 18,594	$ 15,338	$ 8,208	$ 4,817	$ 6,233	$ 13,033	$ 90,398	$ 32,291	$ 50,933
Basic earnings per share	$ 1.81	$ 1.42	$ 1.06	$ 0.88	$ 0.47	$ 0.28	$ 0.36	$ 0.75	$ 5.17	$ 1.85	$ 2.92
Diluted earnings per share	$ 1.78	$ 1.39	$ 1.05	$ 0.87	$ 0.46	$ 0.27	$ 0.35	$ 0.74	$ 5.09	$ 1.82	$ 2.88

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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