Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net sales	$ 219,863	$ 193,484	$ 161,651
Cost of sales	68,962	66,435	56,755
Gross profit	150,901	127,049	104,896
Sales and marketing	46,737	41,054	32,921
General and administrative	36,258	31,832	28,745
Research and development	15,650	16,966	13,294
Restructuring	0	485	3,107
Total operating expenses	98,645	90,337	78,067
Income from operations	52,256	36,712	26,829
Other income (expense):
Interest income	4,949	3,077	986
Interest expense	(205)	0	0
Other income (loss), net	(125)	(314)	(325)
Income before income taxes	56,875	39,475	27,490
Provision for income taxes	12,837	9,370	6,854
Net income	$ 44,038	$ 30,105	$ 20,636
Earnings per share of common stock:
Basic (in dollars per share)	$ 1.96	$ 1.36	$ 0.94
Diluted (in dollars per share)	$ 1.93	$ 1.34	$ 0.93
Weighted-average shares outstanding:
Basic (in shares)	22,452	22,217	21,975
Diluted (in shares)	22,779	22,423	22,171
Cash dividends declared per common share (in dollars per share)	$ 0.64	$ 0.56	$ 0.5