Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net sales	$ 272.0	$ 261.9	$ 814.4	$ 728.0
Cost of sales	162.8	158.3	477.0	432.0
Gross profit	109.2	103.6	337.4	296.0
Research and development expense	8.4	7.4	24.1	21.4
Selling and administrative expense	76.9	77.8	232.7	218.9
Operating income	23.9	18.4	80.6	55.7
Interest expense, net	(0.6)	(4.4)	(6.6)	(13.4)
Net foreign currency transaction loss	(0.7)	(0.9)	(0.2)	(5.0)
Loss on extinguishment of debt	0.0	0.0	11.3	0.0
Other expense, net	(0.3)	(0.2)	0.0	(0.2)
Income before income taxes	22.3	12.9	62.5	37.1
Income tax expense	0.8	1.2	5.5	5.9
Net income including noncontrolling interest	21.5	11.7	57.0	31.2
Net income attributable to Tennant Company	$ 21.5	$ 11.7	$ 57.0	$ 31.2
Net income attributable to Tennant Company per share
Basic (in dollars per share)	$ 1.16	$ 0.64	$ 3.08	$ 1.70
Diluted (in dollars per share)	$ 1.14	$ 0.63	$ 3.02	$ 1.68
Weighted average shares outstanding
Basic (in shares)	18,554,136	18,371,883	18,519,523	18,335,430
Diluted (in shares)	18,871,217	18,648,328	18,869,898	18,623,967