Condensed Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues	$ 299.7	$ 292.2	$ 562.1	$ 565.0
Cost of Sales	(178.9)	(175.0)	(333.1)	(338.7)
Gross Profit	120.8	117.2	229.0	226.3
Operating Expense:
Research and Development Expense	8.4	7.9	15.6	15.9
Selling and Administrative Expense	92.5	90.3	182.7	181.0
Total Operating Expense	100.9	98.2	198.3	196.9
Profit from Operations	19.9	19.0	30.7	29.4
Other Income (Expense):
Interest Income		0.9		1.7
Interest Expense	(5.4)	(6.0)	(10.5)	(11.8)
Net Foreign Currency Transaction Gain (Loss)	(0.2)	(0.3)	0.0	(1.1)
Other Expense, Net	1.4	(0.5)	1.3	(0.7)
Total Other Expense, Net	(3.3)	(5.9)	(7.5)	(11.9)
Profit Before Income Taxes	16.6	13.1	23.2	17.5
Income Tax Expense	1.8	0.4	3.0	1.4
Net Earnings Including Noncontrolling Interest	14.8	12.7	20.2	16.1
Net Earnings Attributable to Noncontrolling Interest	0.0	0.0	0.0	0.1
Net Earnings Attributable to Tennant Company	$ 14.8	$ 12.7	$ 20.2	$ 16.0
Net Earnings (Loss) Attributable to Tennant Company per Share:
Basic	$ 0.82	$ 0.71	$ 1.12	$ 0.90
Diluted	$ 0.81	$ 0.69	$ 1.10	$ 0.88
Weighted Average Shares Outstanding:
Basic	18,082,492	17,943,450	18,062,591	17,867,641
Diluted	18,394,865	18,371,538	18,367,384	18,303,960
Cash Dividend Declared per Common Share	$ 0.22	$ 0.21	$ 0.44	$ 0.42