Consolidated Condensed Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net sales	$ 275,088	$ 248,827	$ 794,605	$ 736,665
Cost of sales	123,473	106,521	355,222	324,485
Gross profit	151,615	142,306	439,383	412,180
Selling and administrative expense	114,600	104,736	333,302	307,476
Research and development expense	12,767	10,859	34,932	32,203
Operating expenses	127,367	115,595	368,234	339,679
Income from operations	24,248	26,711	71,149	72,501
Interest expense	8,536	8,145	19,462	27,917
Other expense	0	1,127	112,011	1,127
Income (loss) before income taxes	15,712	17,439	(60,324)	43,457
Provision (benefit) for income taxes	(30,438)	2,491	46,842	5,359
Net income (loss)	46,150	14,948	(107,166)	38,098
Comprehensive income (loss)	$ 43,125	$ 13,756	$ (113,096)	$ 42,242
Per share data:
Basic (in dollars per share)	$ 1.51	$ 0.51	$ (3.59)	$ 1.31
Diluted (in dollars per share)	$ 1.48	$ 0.47	$ (3.59)	$ 1.19
Weighted average common shares:
Basic (shares)	30,473	29,179	29,892	29,097
Diluted (shares)	31,103	32,143	29,892	32,020