CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 1,526,087	$ 934,842	$ 713,672
Cost of sales	398,490	237,027	176,814
Gross profit	1,127,597	697,815	536,858
Selling, general, and administrative	911,356	563,656	445,819
Income from operations	216,241	134,159	91,039
Other (expense) income
Interest (expense) income	(231)	246	1,295
Other income (expense)	119	(140)	29
Other income (expense)	(112)	106	1,324
Income from operations before income taxes	216,129	134,265	92,363
Provision for income taxes	52,098	31,406	14,447
Net income	$ 164,031	$ 102,859	$ 77,916
Basic earnings per share
Earnings per share, basic (in usd per share)	$ 14.01	$ 8.74	$ 6.62
Diluted earnings per share
Earnings per share, diluted (in usd per share)	$ 13.89	$ 8.68	$ 6.43
Weighted average shares outstanding -
Basic (in usd)	11,705	11,771	11,771
Diluted (in usd)	11,813	11,850	12,117
Cash dividends declared per share (in usd per share)	$ 5.68	$ 4.52	$ 3.38