CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net sales	$ 155,625	$ 153,505	$ 456,658	$ 458,416
Cost of sales	109,805	109,349	319,777	333,244
Gross profit	45,820	44,156	136,881	125,172
Research and development expenses	7,411	7,696	23,029	22,979
Selling, general and administrative expenses	29,505	26,214	87,316	77,441
Operating income	8,904	10,246	26,536	24,752
Interest income (expense), net	(212)	(268)	(447)	(1,272)
Accrued social insurance adjustment	0	0	0	9,464
Other income (expense), net	(157)	(1,646)	(151)	(1,263)
Income before provision for income taxes	2,485	8,332	19,888	31,681
Provision for income taxes	3,440	2,164	8,257	5,267
Net income (loss)	$ (955)	$ 6,168	$ 11,631	$ 26,414
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.07)	$ 0.44	$ 0.85	$ 1.90
Diluted (in dollars per share)	$ (0.07)	$ 0.43	$ 0.84	$ 1.86
Shares used in computing earnings per share:
Basic (in shares)	13,392	13,928	13,622	13,935
Diluted (in shares)	13,392	14,205	13,920	14,189
Argentina Subsidiary
Loss on sale of Argentina subsidiary	$ (6,050)	$ 0	$ (6,050)	$ 0