Selected Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Selected Quarterly Financial Information [Abstract]
Net sales	$ 350,370	$ 309,459	$ 288,669	$ 280,717	$ 301,157	$ 323,674	$ 322,006	$ 302,293	$ 1,229,215	$ 1,249,130	$ 1,213,989
Gross profit	122,697	111,090	101,492	95,842	109,362	122,046	121,988	112,411	431,121	465,807	435,276
Net income (loss) attributable to common shareholders	$ 29,735	$ 27,152	$ 21,033	$ 20,168	$ 47,190	$ 38,060	$ 36,284	$ 31,716	$ 98,088	$ 153,250	$ 104,021
Earnings (loss) per share attributable to common shareholders
Basic	$ 0.60	$ 0.52	$ 0.41	$ 0.39	$ 0.90	$ 0.75	$ 0.72	$ 0.63	$ 1.92	$ 3.02	$ 2.09
Diluted	$ 0.59	$ 0.51	$ 0.40	$ 0.38	$ 0.90	$ 0.73	$ 0.70	$ 0.62	$ 1.88	$ 2.96	$ 2.04