Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash, cash equivalents, and restricted cash		$ 123.6	$ 141.0
Receivables, less allowances of $5.3 and $4.6, respectively		211.4	199.9
Inventories		160.6	127.7
Prepaid and other current assets		31.2	25.0
Total current assets		526.8	493.6
Property, plant and equipment, less accumulated depreciation of $258.4 and $252.0, respectively		172.8	185.5
Operating lease assets		41.3	44.5
Goodwill		193.1	207.8
Intangible assets, net		98.0	126.2
Other assets		29.7	25.0
Total assets		1,061.7	1,082.6
Current portion of long-term debt	[1]	4.2	10.9
Accounts payable		121.5	106.3
Employee compensation and benefits		60.6	53.7
Other current liabilities		104.0	83.4
Total current liabilities		290.3	254.3
Long-term debt		263.4	297.6
Long-term operating lease liabilities		25.4	28.7
Employee-related benefits		16.3	17.9
Deferred income taxes		20.6	39.1
Other liabilities		10.6	38.9
Total long-term liabilities		336.3	422.2
Total liabilities		626.6	676.5
Commitments and contingencies (Note 16)
Common stock, $0.375 par value per share, 60,000,000 shares authorized; 18,535,116 and 18,503,805 issued and outstanding, respectively		7.0	6.9
Additional paid-in capital		54.1	54.7
Retained earnings		410.6	363.3
Accumulated other comprehensive loss		(37.9)	(20.1)
Total Tennant Company shareholders' equity		433.8	404.8
Noncontrolling interest		1.3	1.3
Total equity		435.1	406.1
Total liabilities and total equity		$ 1,061.7	$ 1,082.6

[1] As of September 30, 2021, the Company is required to repay $3.1 million in outstanding credit facility borrowings and $0.6 million of current maturities of secured borrowings over the next 12 months.