CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
Revenue	$ 271,470	$ 190,061	$ 669,930	$ 543,040
Cost of sales	67,434	47,128	171,354	134,250
Gross profit	204,036	142,933	498,576	408,790
Selling, general, and administrative	159,477	122,671	402,385	336,458
Income from operations	44,559	20,262	96,191	72,332
Other income (expense)
Interest income, net	44	324	212	1,061
Other expense	30	(3)	12	(11)
Other income (expense)	74	321	224	1,050
Income from operations before income taxes	44,633	20,583	96,415	73,382
Provision for income taxes	10,180	4,681	21,550	15,347
Net income	$ 34,453	$ 15,902	$ 74,865	$ 58,035
Basic earnings per share
Earnings per share - basic	$ 2.93	$ 1.36	$ 6.36	$ 4.91
Diluted earnings per share
Earnings per share - diluted	$ 2.91	$ 1.32	$ 6.32	$ 4.77
Weighted average shares outstanding -
Basic	11,766	11,731	11,772	11,823
Diluted	11,857	12,065	11,840	12,174
Cash dividends declared per share	$ 1.13	$ 0.75	$ 3.39	$ 2.25