Tennant (TNC) 10-K 24 Feb 22 2021 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Jan. 28, 2022	Jun. 30, 2021
Document Information [Line Items]
Entity Central Index Key	0000097134
Entity Registrant Name	TENNANT CO
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-16191
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-0572550
Entity Address, Address Line One	10400 Clean Street
Entity Address, City or Town	Eden Prairie
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55344
City Area Code	763
Local Phone Number	540-1200
Title of 12(b) Security	Common Stock, par value $0.375 per share
Trading Symbol	TNC
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,476,042,920
Entity Common Stock, Shares Outstanding		18,525,725
Auditor Name	Deloitte & Touche LLP
Auditor Location	Minneapolis, Minnesota
Auditor Firm ID	34
ICFR Auditor Attestation Flag	true
KPMG LLP [Member]
Document Information [Line Items]
Auditor Name	KPMG LLP
Auditor Location	Minneapolis, Minnesota
Auditor Firm ID	185

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales	$ 1,090.8	$ 1,001	$ 1,137.6
Cost of sales	652.8	593.2	675.9
Gross profit	438	407.8	461.7
Selling and administrative expense	321.9	314	357.2
Research and development expense	32.2	30.1	32.7
Gain on sale of business	(9.8)	0	0
Operating income	93.7	63.7	71.8
Interest expense, net	(7.3)	(17.4)	(17.8)
Net foreign currency transaction loss	(0.7)	(5.3)	(0.7)
Loss on extinguishment of debt	11.3	0	0
Other (expense) income, net	(0.3)	0.1	0.7
Income before income taxes	74.1	41.1	54
Income tax expense	9.2	7.4	8.1
Net income including noncontrolling interest	64.9	33.7	45.9
Net income attributable to noncontrolling interest	0	0	0.1
Net income attributable to Tennant Company	$ 64.9	$ 33.7	$ 45.8
Net income attributable to Tennant Company per share:
Basic (in dollars per share)	$ 3.51	$ 1.84	$ 2.53
Diluted (in dollars per share)	$ 3.44	$ 1.81	$ 2.48
Weighted average shares outstanding:
Basic (in shares)	18,499,674	18,349,724	18,118,486
Diluted (in shares)	18,849,217	18,635,002	18,453,145

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income including noncontrolling interest	$ 64.9	$ 33.7	$ 45.9
Other comprehensive (loss) income:
Foreign currency translation adjustments (net of related tax benefits of $0.4, $0.8, and $0.1, respectively)	(16.9)	17.2	(4.4)
Pension and postretirement medical benefits (net of related tax benefit of $0.3, $0.3, and $0.1, respectively)	(0.4)	(1)	(0.4)
Cash flow hedge (net of tax benefit (expense) of $0.1, $(0.7), and $(1.1), respectively)	(0.5)	2.2	3.5
Total other comprehensive (loss) income, net of tax	(17.8)	18.4	(1.3)
Total comprehensive income including noncontrolling interest	47.1	52.1	44.6
Comprehensive income attributable to noncontrolling interest	0	0	0.1
Comprehensive income attributable to Tennant Company	$ 47.1	$ 52.1	$ 44.5

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Foreign Currency Translation Adjustments, tax	$ 0.4	$ 0.8	$ 0.1
Pension and postretirement medical benefits, tax	0.3	0.3	0.1
Cash Flow Hedge, tax	$ 0.1	$ (0.7)	$ (1.1)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash, cash equivalents, and restricted cash		$ 123.6	$ 141
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
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	126.2
Other assets		29.7	25
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	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	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.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Receivable, allowance	$ 5.3	$ 4.6
Accumulated depreciation	$ 258.4	$ 252
Common stock, par value (in dollars per share)	$ 0.375	$ 0.375
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	15,535,116	18,503,805
Common stock, shares outstanding (in shares)	15,535,116	18,503,805

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING ACTIVITIES
Net income including noncontrolling interest	$ 64.9	$ 33.7	$ 45.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	33.1	32.6	32.2
Amortization of intangible assets	20	20.8	22.2
Fair value step-up adjustment to acquired inventory	0	0	0.9
Deferred income taxes	(15)	(4)	(9.6)
Share-based compensation expense	9.5	6	11.4
Bad debt and returns expense	1.5	2	2.5
Gain on sale of business	(9.8)	0	0
Acquisition contingent consideration adjustment	0.7	(0.4)	(2.3)
Note receivable write-down	0	0	2.7
Loss on extinguishment of debt	11.3	0	0
Other, net	1.6	2.6	2.4
Changes in operating assets and liabilities:
Receivables	(20.3)	26	(8.5)
Inventories	(56)	18.3	(17.8)
Accounts payable	19.1	8.5	(7.5)
Employee compensation and benefits	8.3	(10)	4.5
Other assets and liabilities	0.5	(2.3)	(7.1)
Net cash provided by operating activities	69.4	133.8	71.9
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(19.4)	(29.9)	(38.4)
Proceeds from disposals of property, plant and equipment	0	0.1	0.1
Proceeds from principal payments received on long-term note receivable	0	0	2.9
Acquisitions of businesses, net of cash acquired	0	0	(19.7)
Purchase of intangible asset	(0.1)	(0.1)	(0.5)
Proceeds from sale of business, net of cash divested	24.7	0	0
Investment in leased assets	(3.7)	0	0
Cash received from leased assets	0.2	0	0
Net cash provided by (used in) investing activities	1.7	(29.9)	(55.6)
FINANCING ACTIVITIES
Proceeds from borrowings	315.8	126.4	25
Repayments of borrowings	(362)	(157.5)	(41.8)
Debt extinguishment payment	(8.4)	0	0
Contingent consideration payments	(2.5)	0	0
Change in finance lease obligations	0.1	(0.2)	(0.2)
Proceeds from issuances of common stock	5	4.9	6.1
Purchase of noncontrolling owner interest	0	(0.1)	(0.5)
Dividends paid	(17.5)	(16.3)	(16)
Repurchases of common stock	(15)	0	0
Net cash used in financing activities	(84.5)	(42.8)	(27.4)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(4)	5.3	(0.4)
Net (decrease) increase in cash, cash equivalents and restricted cash	(17.4)	66.4	(11.5)
Cash, cash equivalents and restricted cash at beginning of year	141	74.6	86.1
Cash, cash equivalents and restricted cash at end of year	123.6	141	74.6
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	19.5	12	21.7
Cash paid for interest	11.7	18.3	19.7
Supplemental non-cash investing and financing activities:
Capital expenditures in accounts payable	$ 3.7	$ 3.8	$ 3.9

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2018	18,125,201
Balance at Dec. 31, 2018	$ 6.8	$ 28.5	$ 316.3	$ (37.2)	$ 314.4	$ 1.9	$ 316.3
Net income (loss)	0	0	45.8	0	45.8	0.1	45.9
Other comprehensive income (loss)	$ 0	0	0	(1.3)	(1.3)	0	(1.3)
Issue stock for directors, employee benefit and stock plans, net of related tax withholdings of shares (in shares)	210,809
Issue stock for directors, employee benefit and stock plans, net of related tax withholdings of shares	$ 0.1	5.1	0	0	5.2	0	5.2
Share-based compensation	0	11.4	0	0	11.4	0	11.4
Dividends paid per common share	0	0	(16)	0	(16)	0	(16)
Purchase of noncontrolling interests	0	0.5	0	0	0.5	(0.5)	0
Other	$ 0	0	(0.1)	0	(0.1)	(0.1)	(0.2)
Balance (in shares) at Dec. 31, 2019	18,336,010
Balance at Dec. 31, 2019	$ 6.9	45.5	346	(38.5)	359.9	1.4	361.3
Net income (loss)	0	0	33.7	0	33.7	0	33.7
Other comprehensive income (loss)	$ 0	0	0	18.4	18.4	0	18.4
Issue stock for directors, employee benefit and stock plans, net of related tax withholdings of shares (in shares)	167,795
Issue stock for directors, employee benefit and stock plans, net of related tax withholdings of shares	$ 0	3.3	0	0	3.3	0	3.3
Share-based compensation	0	6	0	0	6	0	6
Dividends paid per common share	0	0	(16.3)	0	(16.3)	0	(16.3)
Purchase of noncontrolling interests	0	(0.1)	0	0	(0.1)	0	(0.1)
Other	$ 0	0	(0.1)	0	(0.1)	(0.1)	$ (0.2)
Repurchases of common stock (in shares)							0
Balance (in shares) at Dec. 31, 2020	18,503,805						18,503,805
Balance at Dec. 31, 2020	$ 6.9	54.7	363.3	(20.1)	404.8	1.3	$ 406.1
Net income (loss)	0	0	64.9	0	64.9	0	64.9
Other comprehensive income (loss)	$ 0	0	0	(17.8)	(17.8)	0	(17.8)
Issue stock for directors, employee benefit and stock plans, net of related tax withholdings of shares (in shares)	228,293
Issue stock for directors, employee benefit and stock plans, net of related tax withholdings of shares	$ 0.1	4.9	0	0	5	0	5
Share-based compensation	0	9.5	0	0	9.5	0	9.5
Dividends paid per common share	0	0	(17.5)	0	(17.5)	0	(17.5)
Other	$ 0	0	(0.1)	0	(0.1)	0	$ (0.1)
Repurchases of common stock (in shares)	(196,982)						(196,982)
Repurchases of common stock	$ 0	(15)	0	0	(15)	0	$ (15)
Balance (in shares) at Dec. 31, 2021	18,535,116						15,535,116
Balance at Dec. 31, 2021	$ 7	$ 54.1	$ 410.6	$ (37.9)	$ 433.8	$ 1.3	$ 435.1

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Issue stock for directors, employee benefit and stock plans, related tax withholdings of shares (in shares)	35,061	20,494	12,198
Dividends paid per common share (in dollars per share)	$ 0.94	$ 0.89	$ 0.88

Note 1 - Operations and Summary

Note 1 - Operations and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Basis of Presentation and Significant Accounting Policies [Text Block]	1. Operations and Summary of Significant Accounting Policies Nature of Operations Our products are used in many types of environments, including retail establishments, distribution centers, factories and warehouses, public venues such as arenas and stadiums, office buildings, schools and universities, hospitals and clinics, and more. Customers include contract cleaners to whom organizations outsource facilities maintenance as well as businesses that perform facilities maintenance themselves. The Company reaches these customers through the industry's largest direct sales and service organization and through a strong and well-supported network of authorized distributors worldwide. Reclassification December 31, 2020 Consolidation Translation of Non-U.S. Currency December 31, 2021, 2020 2019 not Use of Estimates Cash and Cash Equivalents three Restricted Cash December 31, 2021 2020 Receivables may may not Our reserves are also based on amounts determined by using percentages applied to trade receivables, using a loss rate method. We considered the following in determining the expected loss rate: ( 1 2 3 three not During the fourth 2021, Inventories first first first Property, Plant and Equipment Leases Operating leases with an initial term of 12 not not 1 2 3 Finance leases are not Goodwill October 1 may one first not may In 2021, Intangible Assets Impairment of Long-Lived Assets and Assets Held for Sale may not Assets held for sale are measured at the lower of their carrying value or fair value less costs to sell. Upon retirement or disposition, the asset cost and related accumulated depreciation or amortization are removed from the accounts and a gain or loss is recognized based on the difference between the fair value of proceeds received and carrying value of the assets held for sale. Purchase of Common Stock 2016 2015 not Warranty one four first six nine Pension and Profit Sharing Plans Postretirement Benefits January 1, 1999. Derivative Financial Instruments may not We account for our foreign currency hedging instruments as either assets or liabilities on the consolidated balance sheets and measure them at fair value. Gains and losses resulting from changes in fair value are accounted for depending on the use of the derivative and whether it is designated and qualifies for hedge accounting. Gains and losses from foreign exchange forward contracts that hedge certain balance sheet positions are recorded each period to net foreign currency transaction loss in our consolidated statements of income. Foreign exchange option contracts or forward contracts hedging forecasted foreign currency revenue are designated as cash flow hedges under accounting for derivative instruments and hedging activities, with gains and losses recorded each period to accumulated other comprehensive loss in our consolidated balance sheets, until the forecasted transaction occurs. When the forecasted transaction occurs, we reclassify the related gain or loss on the cash flow hedge to net sales. In the event the underlying forecasted transaction does not not not not Revenue Recognition not not not one In general, we transfer control and recognize a sale at the point in time when products are shipped from our manufacturing facilities both direct to consumers and to distributors. Service revenue is recognized in the period the service is performed or ratably over the period of the related service contract. Consideration related to service contracts is deferred if the proceeds are received in advance of the satisfaction of the performance obligations and recognized over the contract period as the performance obligation is met. We use an output method to measure progress toward completion for certain prepaid service contracts, as this method appropriately depicts performance toward satisfaction of the performance obligations. For contracts with multiple performance obligations (i.e., a product and service component), we allocate the transaction price to the performance obligations in proportion to their stand-alone selling prices. We use an observable price to determine the stand-alone selling price for separate performance obligations. When allocating on a relative stand-alone selling price basis, any discounts contained within the contract are allocated proportionately to all of the performance obligations in the contract. We generally expense the incremental costs of obtaining a contract when incurred because the amortization period would be less than one We do not one not one Share-Based Compensation Restricted share awards and units are recorded as compensation cost over the requisite service periods based on the market value on the date of grant. To determine the amount of compensation cost to be recognized in each period for these awards and for option awards, we account for forfeitures as they occur. Performance share awards are stock awards where the ultimate number of shares issued will be contingent on the Company’s performance against certain performance goals. The Compensation Committee has the ability to adjust performance goals or modify the manner of measuring or evaluating a performance goal using its discretion. The fair value of each PSU is based on the market value on the date of grant. We recognize expense related to the estimated vesting of our PSUs granted. The estimated vesting of the PSUs is based on the probability of achieving certain performance metrics over the specified performance period. To determine the amount of compensation cost to be recognized in each period, we estimate forfeitures. Research and Development Advertising Costs 2021 2020 2019 Income Taxes not not first Earnings Per Share not

Note 2 - Newly Adopted Accounti

Note 2 - Newly Adopted Accounting Pronouncements	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	2. Newly Adopted Accounting Pronouncements Income Taxes January 1, 2021, No. 2019 12, Income Taxes (Topic 740 740. Defined Benefit Plans In December 2020, No. 2018 14 , Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715 20 Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans not Reference Rate Reform In March 2020, No. 2020 04, Reference Rate Reform (Topic 848 March 12, 2020 December 31, 2022. Financial Instruments On January 1, 2020, No. 2016 13, Financial Instruments-Credit Losses (Topic 326 .

Note 3 - Revenue

Note 3 - Revenue	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	3. Revenue Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products and services. Generally, these criteria are met at the time the product is shipped. We also enter into contracts that can include combinations of products and services, which are generally capable of being distinct and are accounted for as separate performance obligations. Revenue is recognized net of allowances for returns and any taxes collected from customers, which are subsequently remitted to governmental authorities. Disaggregation of Revenue The following tables illustrate the disaggregation of revenue by geographic area, groups of similar products and services and sales channels for the years ended December 31: Net sales by geographic area 2021 2020 2019 Americas $ 658.3 $ 631.0 $ 722.4 Europe, Middle East and Africa (EMEA) 331.9 278.2 307.6 Asia Pacific (APAC) 100.6 91.8 107.6 Total $ 1,090.8 $ 1,001.0 $ 1,137.6 Net sales are attributed to each geographic area based on the end user country and are net of intercompany sales. Net sales by groups of similar products and services 2021 2020 2019 Equipment $ 679.9 $ 629.7 $ 741.8 Parts and consumables 249.3 205.8 221.9 Specialty surface coatings (a) 1.5 22.7 25.7 Service and other 160.1 142.8 148.2 Total $ 1,090.8 $ 1,001.0 $ 1,137.6 (a) February 1, 2021, 5. Net sales by sales channel 2021 2020 2019 Sales direct to consumer $ 692.4 $ 664.9 $ 750.9 Sales to distributors 398.4 336.1 386.7 Total $ 1,090.8 $ 1,001.0 $ 1,137.6 Contract Liabilities Sales Returns The right of return may Sales Incentives Our sales contracts may one The change in our sales incentive accrual balance for the years ended December 31, 2021 2020 2021 2020 Beginning balance $ 12.1 $ 13.7 Additions to sales incentive accrual 38.0 18.2 Contract payments (30.0 ) (20.0 ) Foreign currency fluctuations (0.2 ) 0.2 Ending balance $ 19.9 $ 12.1 Deferred Revenue We sell separately priced prepaid contracts to our customers where we receive payment at the inception of the contract and defer recognition of the consideration received because we have to satisfy future performance obligations. Our deferred revenue balance is primarily attributed to prepaid maintenance contracts on our machines ranging from 12 months to 60 months. In circumstances where prepaid contracts are sold simultaneously with machines, we use an observable price to determine stand-alone selling price for separate performance obligations. The change in the deferred revenue balance for the years ended December 31, 2021 2020 2021 2020 Beginning balance $ 9.3 $ 10.7 Increase in deferred revenue representing our obligation to satisfy future performance obligations 34.5 21.0 Decrease in deferred revenue for amounts recognized in net sales for satisfied performance obligations (32.5 ) (21.8 ) Foreign currency fluctuations (0.1 ) (0.6 ) Ending balance $ 11.2 $ 9.3 As of December 31, 2021 2022 $ 7.7 2023 1.9 2024 1.1 2025 0.4 2026 0.1 Thereafter — Total $ 11.2 As of December 31, 2020

Note 4 - Management Actions

Note 4 - Management Actions	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	4. Management Actions Restructuring Actions In 2021, 2021. In 2020, A reconciliation to the ending liability balance of severance and related costs as of December 31, 2021 2021 2020 Beginning balance $ 4.5 $ 4.5 New charges 4.1 6.2 Cash payments (2.9 ) (5.4 ) Foreign currency adjustments (0.2 ) 0.2 Adjustment to accrual (0.6 ) (1.0 ) Ending balance $ 4.9 $ 4.5 Other Actions In 2019, not December 31, 2020, not first 2020. During the second 2019, third 2019,

Note 5 - Acquisitions and Dives

Note 5 - Acquisitions and Divestitures	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	5. Acquisitions and Divestitures Coatings During the first 2021, Gaomei On January 4, 2019, 2019 2021.

Note 6 - Inventories

Note 6 - Inventories	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Inventory Disclosure [Text Block]	6. Inventories Inventories as of December 31 2021 2020 Inventories carried at LIFO: Finished goods (a) $ 54.0 $ 42.4 Raw materials and work-in-process 42.4 21.6 Excess of FIFO over LIFO cost (b) (43.0 ) (31.4 ) Total LIFO inventories $ 53.4 $ 32.6 Inventories carried at FIFO: Finished goods (a) $ 53.8 $ 55.0 Raw materials and work-in-process 53.4 40.1 Total FIFO inventories $ 107.2 $ 95.1 Total inventories $ 160.6 $ 127.7 (a) Finished goods include machines, parts and consumables and component parts that are used in our products. (b) The difference between replacement cost and the stated LIFO inventory value is not

Note 7 - Property, Plant and Eq

Note 7 - Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	7. Property, Plant and Equipment Property, plant and equipment and related accumulated depreciation, including equipment under finance leases, as of December 31, 2021 2020 Property, plant and equipment: Land $ 21.7 $ 23.3 Buildings and improvements 125.7 131.5 Machinery and manufacturing equipment 152.6 157.0 Office equipment 125.2 118.0 Construction in progress 6.0 7.7 Total property, plant and equipment 431.2 437.5 Less: accumulated depreciation (258.4 ) (252.0 ) Property, plant and equipment, net $ 172.8 $ 185.5 Depreciation expense was $33.1 million in 2021 2020 2019.

Note 8 - Goodwill and Intangibl

Note 8 - Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	8. Goodwill and Intangible Assets For purposes of performing our goodwill impairment analysis, we have identified our reporting units as North America, Latin America, EMEA and APAC. In 2021, no We have the option of first not 2021 2020, December 31, 2021 2020. The changes in the carrying amount of goodwill are as follows: Accumulated Impairment Goodwill Losses Total Balance as of December 31, 2021 $ 233.9 $ (40.8 ) $ 193.1 Divestiture (1.7 ) — (1.7 ) Foreign currency fluctuations (13.9 ) 0.9 (13.0 ) Balance as of December 31, 2020 $ 249.5 $ (41.7 ) $ 207.8 Foreign currency fluctuations 14.4 (1.7 ) 12.7 Balance as of December 31, 2019 $ 235.1 $ (40.0 ) $ 195.1 The balances of acquired intangible assets, excluding goodwill, are as follows: Customer Trade Lists Names Technology Total Balance as of December 31, 2021 Original cost $ 155.4 $ 30.3 $ 17.0 $ 202.7 Accumulated amortization (80.0 ) (13.9 ) (10.8 ) (104.7 ) Carrying amount $ 75.4 $ 16.4 $ 6.2 $ 98.0 Weighted-average original life (in years) 15 11 11 Balance as of December 31, 2020 Original cost $ 166.2 $ 34.4 $ 17.9 $ 218.5 Accumulated amortization (70.3 ) (12.3 ) (9.7 ) (92.3 ) Carrying amount $ 95.9 $ 22.1 $ 8.2 $ 126.2 Weighted-average original life (in years) 15 11 11 In 2021, 5. Amortization expense of intangible assets was $20.0 million, $20.8 million and $22.2 million for the years ended December 31, 2021, 2020 2019 Estimated aggregate amortization expense based on the current carrying amount of amortizable intangible assets for each of the five 2022 $ 16.9 2023 15.4 2024 13.9 2025 12.5 2026 11.1 Thereafter 28.2 Total $ 98.0

Note 9 - Debt

Note 9 - Debt	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	9. Debt 2021 Credit Agreement On April 5, 2021, “2021 2021 April 3, 2026, may The fee for committed funds under the revolving facility of the 2021 2021 not 1.70%, one not In connection with the 2021 first 2021 first Our 2021 no not The 2021 not 2021 • a covenant requiring us to maintain an indebtedness to EBITDA ratio, determined as of the end of each of our fiscal quarters, of no 1.00, • a covenant requiring us to maintain an EBITDA to interest expense ratio for a period of four no 3.00 1; • a covenant restricting us from paying dividends or repurchasing stock if, after giving effect to such payments and assuming no 1, Redemption of Senior Notes In the second 2021, 2025 2021 second 2021. second 2021. Debt outstanding as of December 31 2021 2020 Senior unsecured notes $ — $ 300.0 Credit facility borrowings: Revolving credit facility borrowings 168.0 10.0 Term loan facility borrowings 98.8 — Secured borrowings 0.7 1.5 Finance lease liabilities 0.1 0.1 Unamortized debt issuance costs — (3.1 ) Total debt 267.6 308.5 Less: current portion of long-term debt (a) (4.2 ) (10.9 ) Long-term debt $ 263.4 $ 297.6 (a) As of December 31, 2021, 12 As of December 31, 2021, December 31, 2021 11. The aggregate maturities of our outstanding debt, excluding unamortized debt issuance costs, as of December 31, 2021 2022 $ 4.2 2023 5.3 2024 6.3 2025 8.8 2026 243.0 Thereafter — Total aggregate maturities $ 267.6

Note 10 - Other Current Liabili

Note 10 - Other Current Liabilities	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]	10. Other Current Liabilities Other current liabilities as of December 31 2021 2020 Other current liabilities: Taxes $ 13.8 $ 12.5 Warranty 10.4 11.1 Deferred revenue 7.7 5.9 Customer sales incentives 19.9 12.1 Freight 7.1 4.6 Restructuring 4.9 4.5 Operating leases 16.4 16.3 Cash flow hedge liabilities 10.4 — Miscellaneous accrued expenses 13.4 16.4 Total other current liabilities $ 104.0 $ 83.4

Note 11 - Derivatives

Note 11 - Derivatives	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	11. Derivatives Hedge Accounting and Hedging Programs We recognize all derivative instruments as either assets or liabilities in our consolidated balance sheets and measure them at fair value. Gains and losses resulting from changes in fair value are accounted for depending on the use of the derivative and whether it is designated and qualifies for hedge accounting. We evaluate hedge effectiveness on our hedges that are designated and qualify for hedge accounting at the inception of the hedge prospectively, as well as retrospectively, and record any ineffective portion of the hedging instruments in net foreign currency transaction loss on our consolidated statements of income. The time value of purchased contracts is recorded in net foreign currency transaction loss in our consolidated statements of income. Our hedging policy establishes maximum limits for each counterparty to mitigate any concentration of risk. Balance Sheet Hedging Hedges of Foreign Currency Assets and Liabilities We hedge our net recognized foreign currency-denominated assets and liabilities with foreign exchange forward contracts to reduce the risk that the value of these assets and liabilities will be adversely affected by changes in exchange rates. These contracts hedge assets and liabilities that are denominated in foreign currencies and are carried at fair value as either assets or liabilities on the consolidated balance sheets with changes in the fair value recorded to net foreign currency transaction losses in our consolidated statements of income. These contracts do not December 31, 2021 December 31, 2020 not Cash Flow Hedging Hedges of Forecasted Foreign Currency Transactions In countries outside the U.S., we transact business in U.S. dollars and in various other currencies. We may one not December 31, 2021, no December 31, 2020, Foreign Currency Derivatives We use foreign currency exchange rate derivatives to hedge our exposure to fluctuations in exchange rates for anticipated intercompany cash transactions between the Company and its subsidiaries. We entered into Euro to U.S. dollar foreign exchange cross-currency swaps for all of the anticipated cash flows associated with an intercompany loan from a wholly-owned European subsidiary. We enter into these foreign exchange cross-currency swaps to hedge the foreign currency-denominated cash flows associated with this intercompany loan, and accordingly, they are not December 31, 2021 December 31, 2020 €152.4 €159.6 December 31, 2021 €2.4 €150.0 April 2022. no December 31, 2021 To receive hedge accounting treatment, all hedging relationships are formally documented at the inception of the hedge, and the hedges must be highly effective in offsetting changes to future cash flows on hedged transactions. We record changes in the fair value of these cash flow hedges in accumulated other comprehensive loss in our consolidated balance sheets, until the forecasted transaction occurs. When the forecasted transaction occurs, we reclassify the related gain or loss on the cash flow hedge to net sales. In the event the underlying forecasted transaction does not not not not The fair value of derivative instruments on our consolidated balance sheets as of December 31 Derivative Assets Derivative Liabilities Balance Sheet Location December 31, 2021 December 31, 2020 Balance Sheet Location December 31, 2021 December 31, 2020 Derivatives designated as hedging instruments: Foreign currency forward contracts (a) Other current assets $ — $ 1.9 Other current liabilities $ 10.4 $ — Foreign currency forward contracts (a) Other assets — — Other liabilities — 24.1 Derivatives not designated as hedging instruments: Foreign currency forward contracts (a) Other current assets 0.3 0.4 Other current liabilities 0.4 0.7 (a) Contracts that mature within the next 12 12 As of December 31, 2021 12 The following tables include the amounts in the consolidated statements of income in which the effects of cash flow hedges are recorded and the effects of cash flow hedge activity on these line items for the years ended December 31, 2021 December 31, 2020 2021 2020 Total Amount of Gain (Loss) on Cash Flow Hedge Activity Total Amount of Gain (Loss) on Cash Flow Hedge Activity Net sales $ 1,090.8 $ (0.4 ) $ 1,001.0 $ (0.2 ) Interest expense, net (7.3 ) 2.4 (17.4 ) 2.7 Net foreign currency transaction loss (0.7 ) 12.7 (5.3 ) (15.0 ) The effect of foreign currency derivative instruments designated as cash flow hedges and foreign currency derivative instruments not three December 31 2021 2020 2019 Foreign Currency Option Contracts Foreign Currency Forward Contracts Foreign Currency Option Contracts Foreign Currency Forward Contracts Foreign Currency Option Contracts Foreign Currency Forward Contracts Derivatives in cash flow hedging relationships: Net gain (loss) recognized in other comprehensive (loss) income, net of tax (a) $ — $ 10.8 $ (0.1 ) $ (7.4 ) $ (0.3 ) $ 8.6 Net loss reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to net sales — (0.3 ) — (0.1 ) — — Net gain reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to interest income — 1.9 — 2.0 — 2.2 Net gain (loss) reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to net foreign currency transaction losses — 9.7 — (11.6 ) — 2.6 Derivatives not designated as hedging instruments: Net gain (loss) recognized in earnings (b) — 2.5 — (5.0 ) — (1.3 ) (a) Net change in the fair value of the effective portion classified in other comprehensive (loss) income. (b) Classified in net foreign currency transaction losses.

Note 12 - Fair Value Measuremen

Note 12 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	12. Fair Value Measurements Estimates of fair value for financial assets and financial liabilities are based on the framework established in the accounting guidance for fair value measurements. The framework defines fair value, provides guidance for measuring fair value and requires certain disclosures. The framework discusses valuation techniques, such as the market approach (comparable market prices), the income approach (present value of future income or cash flow) and the cost approach (cost to replace the service capacity of an asset or replacement cost). The framework utilizes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three three • Level 1: • Level 2: not • Level 3: Our population of assets and liabilities subject to fair value measurements as of December 31, 2021 Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 0.9 — $ 0.9 — Total assets 0.9 — 0.9 — Liabilities: Foreign currency forward exchange contracts 11.4 — 11.4 — Total liabilities $ 11.4 — $ 11.4 $ — Our population of assets and liabilities subject to fair value measurements as of December 31, 2020 Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 3.0 — $ 3.0 — Total assets 3.0 — 3.0 — Liabilities: Foreign currency forward exchange contracts 25.5 — 25.5 — Contingent consideration 1.8 — — 1.8 Total liabilities $ 27.3 — $ 25.5 $ 1.8 Our foreign currency forward exchange and option contracts are valued using observable Level 2 11. Contingent consideration is valued using a probability-weighted analysis of projected gross profit and integration milestones. Contingent consideration payments totaling $2.5 million were paid in 2021. The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, restricted cash, receivables, other current assets, accounts payable and other current liabilities approximate fair value due to their short-term nature. The fair value and carrying value of total debt, including current portion, was $271.2 million and $267.6 million, respectively, as of December 31, 2021 2

Note 13 - Retirement Benefit Pl

Note 13 - Retirement Benefit Plans	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	13. Retirement Benefit Plans Substantially all U.S. employees are covered by various retirement benefit plans, including defined contribution savings plans and postretirement medical plans. Retirement benefits for eligible employees in foreign locations are funded principally through defined benefit plans, annuity or government programs. The total cost of benefits for our plans was $14.8 million, $12.3 million and $13.7 million in 2021 2020 2019 We had a qualified, funded defined benefit retirement plan (the “U.S. Pension Plan”) covering certain current and retired employees in the U.S. During 2015, January 31, 2017. February 15, 2017, May 15, 2017. December 2017. December 2017. 2020, none December 31, 2020. We have a U.S. postretirement medical benefit plan (the “U.S. Retiree Plan”) to provide certain healthcare benefits for U.S. employees hired before January 1, 1999. Our defined contribution savings plan ( “401 401 one 401 2021 2020 2019 We have a U.S. nonqualified supplemental benefit plan (the “U.S. Nonqualified Plan”) to provide additional retirement benefits for certain employees whose benefits under our 401 We also have defined benefit pension plans in the United Kingdom, Germany and Italy (the “U.K. Pension Plan”, the “German Pension Plan” and the "Italian Pension Plan"). The U.K. Pension Plan, German Pension Plan and Italian Pension Plan cover certain current and retired employees and all plans are closed to new participants. In December 2018, 2008. no We expect to contribute approximately $0.1 million to our U.S. Nonqualified Plan and $0.7 million to our U.S. Retiree Plan in 2022. 2022. Weighted-average asset allocations by asset category of the U.K. Pension Plan as of December 31, 2021 Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs Significant Unobservable Inputs Asset category Fair Value (Level 1) (Level 2) (Level 3) Investment account held by pension plan (a) $ 12.9 $ — $ — $ 12.9 Total $ 12.9 $ — $ — $ 12.9 (a) This category is comprised of investments in insurance contracts. Weighted-average asset allocations by asset category of the U.K. Pension Plan as of December 31, 2020 Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs Significant Unobservable Inputs Asset category Fair Value (Level 1) (Level 2) (Level 3) Investment account held by pension plan (a) $ 13.3 — — $ 13.3 Total $ 13.3 $ — $ — $ 13.3 (a) This category is comprised of investments in insurance contracts. Estimates of the fair value of the U.K. Pension Plan and the Tennant Company Retirement Savings Plan assets are based on the framework established in the accounting guidance for fair value measurements. A brief description of the three 12. 3. A reconciliation of the beginning and ending balances of the Level 3 December 31 2021 2020 Fair value at beginning of year $ 13.3 $ 12.2 Purchases, sales, issuances and settlements, net 0.2 0.1 Net (loss) gain (0.4 ) 0.6 Foreign currency (0.2 ) 0.4 Fair value at end of year $ 12.9 $ 13.3 The primary objective of our U.K. Pension Plan is to meet retirement income commitments to plan participants at a reasonable cost to us and to maintain a sound actuarially funded status. This objective is accomplished through growth of capital and safety of funds invested. Assets are invested in securities to achieve growth of capital over inflation through appreciation and accumulation and reinvestment of dividend and interest income. Investments are diversified to control risk. The U.K. Pension Plan is invested in insurance contracts with underlying investments primarily in equity and fixed income securities. Our German Pension Plan is unfunded, which is customary in that country. Weighted-average assumptions used to determine benefit obligations as of December 31 Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2021 2020 2021 2020 Discount rate 2.54 % 2.06 % 1.59 % 1.05 % 2.53 % 2.07 % Rate of compensation increase — % — % — % — % — % — % Weighted-average assumptions used to determine net periodic benefit costs as of December 31 Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Discount rate 2.06 % 3.01 % 3.95 % 1.05 % 1.42 % 1.92 % 2.07 % 3.06 % 3.95 % Expected long-term rate of return on plan assets — % — % — % 2.70 % 3.30 % 3.80 % — % — % — % Rate of compensation increase — % — % — % — % — % — % — % — % — % The discount rate is used to discount future benefit obligations back to today’s dollars. Our discount rates were determined based on high-quality fixed income investments. The resulting discount rates are consistent with the duration of plan liabilities. The Mercer Above Mean Yield Curve for high-quality corporate bonds is used in determining the discount rate for the U.S. Nonqualified Plan in 2021 2021 2019, 2021, 7 10 10 The accumulated benefit obligations as of December 31 2021 2020 U.S. Nonqualified Plan $ 1.1 $ 1.2 U.K. Pension Plan 11.4 12.2 German Pension Plan 1.0 1.2 Italian Pension Plan 3.7 4.2 Information for our plans with an accumulated benefit obligation in excess of plan assets as of December 31 2021 2020 Accumulated benefit obligation $ 5.8 $ 6.6 Fair value of plan assets — — As of December 31, 2021 2020 Information for our plans with a projected benefit obligation in excess of plan assets as of December 31 2021 2020 Projected benefit obligation $ 5.8 $ 6.6 Fair value of plan assets — — As of December 31, 2021 2020 Assumed healthcare cost trend rates as of December 31 2021 2020 Healthcare cost trend rate assumption for the next year Pre-65 5.40 % 5.90 % Healthcare cost trend rate assumption for the next year Post-65 5.90 % 6.20 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.00 % 4.50 % Year that the rate reaches the ultimate trend rate 2045 2037 Summaries related to changes in benefit obligations and plan assets and to the funded status of our defined benefit and postretirement medical benefit plans are as follows: Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2021 2020 2021 2020 Change in benefit obligation: Benefit obligation at beginning of year $ 1.2 $ 1.3 $ 17.6 $ 15.7 $ 7.3 $ 7.8 Service cost — — — — 0.1 0.1 Interest cost 0.1 — 0.2 0.2 0.1 0.2 Actuarial loss (gain) — — (0.6 ) 1.7 0.6 (0.3 ) Foreign exchange — — (0.4 ) 0.8 — — Settlement — — (0.3 ) — — — Benefits paid (0.2 ) (0.1 ) (0.3 ) (0.8 ) (1.1 ) (0.5 ) Benefit obligation at end of year $ 1.1 $ 1.2 $ 16.2 $ 17.6 $ 7.0 $ 7.3 Change in fair value of plan assets and net accrued liabilities: Fair value of plan assets at beginning of year $ — $ — $ 13.3 $ 12.2 $ — $ — Actual return on plan assets — — (0.4 ) 0.6 — — Employer contributions 0.1 0.1 0.8 0.9 1.0 0.5 Foreign exchange — — (0.2 ) 0.4 — — Settlement — — (0.3 ) — — — Benefits paid (0.1 ) (0.1 ) (0.3 ) (0.8 ) (1.0 ) (0.5 ) Fair value of plan assets at end of year — — 12.9 13.3 — — Funded status at end of year $ (1.1 ) $ (1.2 ) $ (3.3 ) $ (4.3 ) $ (7.0 ) $ (7.3 ) Amounts recognized in the consolidated balance sheets consist of: Noncurrent other assets $ — $ — $ 1.4 $ 1.1 $ — $ — Current liabilities (0.1 ) (0.1 ) (0.2 ) — (0.7 ) (0.7 ) Long-term liabilities (1.0 ) (1.1 ) (4.5 ) (5.4 ) (6.3 ) (6.6 ) Net accrued liability $ (1.1 ) $ (1.2 ) $ (3.3 ) $ (4.3 ) $ (7.0 ) $ (7.3 ) Amounts recognized in accumulated other comprehensive loss consist of: Prior service cost $ — $ — $ (0.2 ) $ (0.2 ) $ — $ — Net actuarial (loss) gain (0.9 ) (0.9 ) (2.1 ) (2.0 ) 0.2 0.8 Accumulated other comprehensive (loss) income $ (0.9 ) $ (0.9 ) $ (2.3 ) $ (2.2 ) $ 0.2 $ 0.8 The components of the net periodic benefit cost (credit) for the three December 31 Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Service cost $ — $ — $ — $ — $ — $ — $ 0.1 $ 0.1 $ — Interest cost 0.1 — 0.1 0.2 0.2 0.3 0.1 0.2 0.3 Expected return on plan assets — — — (0.4 ) (0.3 ) (0.4 ) — — — Amortization of net actuarial loss (gain) — 0.1 — 0.1 — — — — (0.1 ) Net periodic benefit cost (credit) $ 0.1 $ 0.1 $ 0.1 $ (0.1 ) $ (0.1 ) $ (0.1 ) $ 0.2 $ 0.3 $ 0.2 The changes in accumulated other comprehensive loss for the three December 31 Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Prior service cost $ — $ — $ — $ — $ 0.1 $ — $ — $ — $ — Net actuarial loss (gain) — — 0.1 0.2 1.6 0.4 0.6 (0.3 ) (0.1 ) Amortization of net actuarial (loss) gain — (0.1 ) — (0.1 ) — — — — 0.1 Total recognized in other comprehensive (income) loss $ — $ (0.1 ) $ 0.1 $ 0.1 $ 1.7 $ 0.4 $ 0.6 $ (0.3 ) $ — Total recognized in net benefit cost (credit) and other comprehensive loss (income) $ 0.1 $ — $ 0.2 $ — $ 1.6 $ 0.3 $ 0.8 $ — $ 0.2 The following benefit payments, which reflect expected future service, are expected to be paid: U.S. Non-U.S. Postretirement Nonqualified Plan Pension Benefits Medical Benefits 2022 $ 0.1 $ 0.6 $ 0.7 2023 0.1 0.6 0.7 2024 0.1 0.6 0.7 2025 0.1 0.6 0.6 2026 0.1 0.6 0.6 2027 to 2030 0.4 3.5 2.5 Total $ 0.9 $ 6.5 $ 5.8

Note 14 - Stockholders' Equity

Note 14 - Stockholders' Equity	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	14. Shareholders' Equity Authorized Shares We are authorized to issue an aggregate of 60,000,000 shares, all of which are designated as Common Stock having a par value of $0.375 per share. The Board of Directors is authorized to establish one Accumulated Other Comprehensive Loss The changes in components of accumulated other comprehensive loss, net of tax, are as follows: Foreign Currency Translation Adjustments Pension and Postretirement Medical Benefits Cash Flow Hedge Total December 31, 2019 $ (36.3 ) $ (0.7 ) $ (1.5 ) $ (38.5 ) Other comprehensive income (loss) before reclassifications 17.2 (1.0 ) (7.5 ) 8.7 Amounts reclassified from accumulated other comprehensive loss — — 9.7 9.7 Net current period other comprehensive income (loss) 17.2 (1.0 ) 2.2 18.4 December 31, 2020 $ (19.1 ) $ (1.7 ) $ 0.7 $ (20.1 ) Other comprehensive (loss) income before reclassifications (16.9 ) (0.4 ) 10.8 (6.5 ) Amounts reclassified from accumulated other comprehensive loss — — (11.3 ) (11.3 ) Net current period other comprehensive loss (16.9 ) (0.4 ) (0.5 ) (17.8 ) December 31, 2021 $ (36.0 ) $ (2.1 ) $ 0.2 $ (37.9 ) Accumulated other comprehensive loss associated with pension and postretirement benefits and cash flow hedges is included in Notes 13 11, Repurchase of Common Stock The Board of Directors has authorized the repurchase of 1,193,414 of our common stock. During the year ended December 31, 2021, December 31, 2021, December 31, 2020.

Note 15 - Leases

Note 15 - Leases	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Lessee, Finance and Operating Leases [Text Block]	15. Leases We lease facilities, vehicles and equipment under the operating lease agreements, which include both monthly and longer-term arrangements. Certain operating leases for vehicles contain residual value guarantee provisions, which would become due at the expiration of the operating lease agreement if the fair value of the leased vehicles is less than the guaranteed residual value. As of December 31, 2021 The lease assets and liabilities as of December 31 Leases Classification 2021 2020 Assets Operating lease assets Operating lease assets $ 41.3 $ 44.5 Finance lease assets Property, plant and equipment (a) 0.1 0.1 Total leased assets $ 41.4 $ 44.6 Liabilities Current: Operating Other current liabilities $ 16.4 $ 16.3 Finance Current portion of long-term debt — 0.1 Noncurrent: Operating Long-term operating lease liabilities 25.4 28.7 Finance Long-term debt 0.1 — Total lease liabilities $ 41.9 $ 45.1 (a) Finance lease assets are recorded net of accumulated amortization of less than $0.1 million and $0.2 million as of December 31, 2021 December 31, 2020 The lease cost for the three December 31 Lease Cost 2021 2020 2019 Operating lease cost (a) $ 26.6 $ 25.1 $ 27.5 Finance lease cost (b) 0.1 0.2 0.3 Total lease cost $ 26.7 $ 25.3 $ 27.8 (a) Includes short-term lease costs of $4.0 million and $3.5 million and variable lease costs of $2.2 million and $1.6 million for the years ended December 31, 2021 December 31, 2020 (b) Includes amortization of leased assets and interest on lease liabilities. The maturity of lease liabilities as of December 31, 2021 Maturity of Lease Liabilities Operating Leases Finance Leases Total 2022 $ 17.5 $ — $ 17.5 2023 14.1 0.1 14.2 2024 7.7 — 7.7 2025 2.9 — 2.9 2026 1.1 — 1.1 Thereafter 0.8 — 0.8 Total lease payments $ 44.1 $ 0.1 $ 44.2 Less: Interest (2.3 ) — (2.3 ) Present value of lease liabilities $ 41.8 $ 0.1 $ 41.9 The lease term and discount rate as of December 31 Lease Term and Discount Rate 2021 2020 Weighted-average remaining lease term (years): Operating leases 3.0 3.4 Finance leases 4.2 1.0 Weighted-average discount rate: Operating leases 3.5% 3.8% Finance leases 2.2% 2.5% Other information related to cash paid related to lease liabilities and lease assets obtained for the years ended December 31 Other Information 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $20.2 $19.7 Financing cash flows from finance leases 0.1 0.1 Lease assets obtained in exchange for new finance lease liabilities 0.1 — Lease assets obtained in exchange for new operating lease liabilities 15.7 14.8

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	16. Commitments and Contingencies In the ordinary course of business, we may not

Note 17 - Income Taxes

Note 17 - Income Taxes	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	17. Income Taxes Income (loss) before income taxes for the three December 31 2021 2020 2019 U.S. operations $ 47.5 $ 46.6 $ 50.1 Foreign operations 26.6 (5.5 ) 3.9 Total $ 74.1 $ 41.1 $ 54.0 Income tax expense (benefit) for the three December 31 2021 2020 2019 Current: Federal $ 11.1 $ 4.2 $ 9.6 Foreign 11.2 3.8 5.6 State 1.9 1.8 2.1 Total current $ 24.2 $ 9.8 $ 17.3 Deferred: Federal $ 0.6 $ 4.4 $ (2.4 ) Foreign (15.5 ) (6.9 ) (6.7 ) State (0.1 ) 0.1 (0.1 ) Total deferred $ (15.0 ) $ (2.4 ) $ (9.2 ) Total: Federal $ 11.7 $ 8.6 $ 7.2 Foreign (4.3 ) (3.1 ) (1.1 ) State 1.8 1.9 2.0 Total income tax expense $ 9.2 $ 7.4 $ 8.1 In general, it is our practice and intention to permanently reinvest the earnings of our foreign subsidiaries and repatriate earnings only when the tax impact is zero no Our effective income tax rate varied from the U.S. federal statutory tax rate for the three December 31 2021 2020 2019 Tax at statutory rate 21.0 % 21.0 % 21.0 % Increases (decreases) in the tax rate from: State and local taxes, net of federal benefit 2.2 3.5 1.9 Effect of foreign operations (6.3 ) (3.7 ) 3.5 Effect of changes in valuation allowances (4.5 ) 0.5 (9.7 ) Excess tax benefits on share-based compensation 1.8 2.1 2.5 Share-based payments (0.9 ) (0.9 ) (2.0 ) Research and development credit (1.4 ) (3.3 ) (1.9 ) Other, net 0.6 (1.3 ) (0.2 ) Effective income tax rate 12.5 % 17.9 % 15.1 % Deferred tax assets and liabilities were comprised of the following as of December 31: 2021 2020 Deferred tax assets: Inventory $ 3.7 $ 4.5 Compensation and employee benefits 14.8 14.0 Warranty reserves 2.2 2.3 Allowance for doubtful accounts and deferred revenue 2.3 2.3 Operating lease liabilities 8.2 11.2 Tax loss carryforwards 7.7 9.6 Tax credit carryforwards 4.5 3.6 Other 0.7 2.5 Gross deferred tax assets $ 44.1 $ 50.0 Less: valuation allowance (4.8 ) (7.5 ) Total net deferred tax assets $ 39.3 $ 42.5 Deferred tax liabilities: Operating lease assets $ 8.1 $ 11.2 Fixed assets 13.0 14.0 Goodwill and intangible assets 23.0 41.5 Total deferred tax liabilities $ 44.1 $ 66.7 Net deferred tax liabilities $ (4.8 ) $ (24.2 ) Tax credit carryforwards consist of $3.2 million U.S. federal and state tax credits and $1.3 million of Netherlands tax credits. We have non-U.S. cumulative tax losses of $30.8 million in various countries. Cumulative losses can be used to offset the income tax liabilities on future income in these countries. $30.8 million of these losses have unlimited carryforward periods. Less than $0.1 million of these losses have a limited carryforward period. The valuation allowance as of December 31, 2021 not December 31, 2021, not 2021 not A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: 2021 2020 Beginning balance $ 6.4 $ 7.5 (Decreases) increases as a result of tax positions taken during a prior period (0.1 ) 0.3 Increases as a result of tax positions taken during the current year 0.5 0.4 Decreases relating to settlement with tax authorities — (0.8 ) Decreases as a result of a lapse of the applicable statute of limitations (2.1 ) (1.4 ) Increases as a result of foreign currency fluctuations — 0.4 Ending balance $ 4.7 $ 6.4 Included in the balance of unrecognized tax benefits as of December 31, 2021 2020 We recognize potential accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense. In addition to the liability of $4.7 million and $6.4 million for unrecognized tax benefits as of December 31, 2021 2020, not We and our subsidiaries are subject to U.S. federal income tax as well as income tax of numerous state and foreign jurisdictions. We are generally no 2018.

Note 18 - Share-based Compensat

Note 18 - Share-based Compensation	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	18. Share-Based Compensation We have five 1997 "1997 2007 “2007 2010 “2010 2017 "2017 2020 "2020 As of December 31, 2021 2007 2010 2017 2020 December 31, 2021 We recognized total share-based compensation expense of $9.5 million, $6.0 million and $11.4 million, respectively, during the years ended 2021 2020 2019 2021 2020 2019 Stock Option Awards We determined the fair value of our stock option awards using the Black-Scholes valuation model that uses the assumptions noted in the table below. The expected term selected for stock options granted during the year represents the period of time that the stock options are expected to be outstanding based on historical data of stock option holder exercise and termination behavior of similar grants. The risk-free interest rate for periods within the contractual life of the stock option is based on the U.S. Treasury rate over the expected life at the time of grant. Expected volatilities are based upon historical volatility of our stock over a period equal to the expected life of each stock option grant. Dividend yield is estimated over the expected life based on our dividend policy and historical dividends paid. To determine the amount of compensation cost to be recognized in each period, we account for forfeitures as they occur. The following table illustrates the valuation assumptions used for the 2021 2020 2019 2021 2020 2019 Expected volatility 34 - 35 % 27 - 32 % 26 - 27 % Weighted-average expected volatility 35 % 27 % 26 % Expected dividend yield 1.3 - 1.4 % 1.3 % 1.2 - 1.4 % Weighted-average expected dividend yield 1.4 % 1.3 % 1.2 % Expected term, in years 5 5 5 Risk-free interest rate 0.8 - 0.9 % 0.3 - 1.3 % 1.6 - 2.5 % New stock option awards granted vest one third three ten 2020, 2017 2010 The following table summarizes the activity during the year ended December 31, 2021 Shares Weighted-Average Exercise Price Outstanding at beginning of year 990,663 $ 62.90 Granted 73,274 79.14 Exercised (147,890 ) 51.88 Forfeited (5,912 ) 64.42 Expired (863 ) 73.72 Outstanding at end of year 909,272 $ 65.98 Exercisable at end of year 743,371 $ 64.03 The weighted-average grant date fair value of stock options granted during the years ended December 31, 2021, 2020 2019 December 31, 2021, 2020 2019 December 31, 2021 December 31, 2021 December 31, 2021 Restricted Share Awards Restricted share awards for employees generally have a three six one six The following table summarizes the activity during the year ended December 31, 2021 Shares Weighted-Average Grant Date Fair Value Nonvested at beginning of year 94,043 $ 55.81 Granted 16,863 79.34 Vested (19,332 ) 59.81 Forfeited — — Nonvested at end of year 91,574 $ 59.30 The total fair value of restricted shares vested during the years ended December 31, 2021, 2020 2019 December 31, 2021 Performance Share Awards We grant performance share awards to key employees as a part of our long-term management compensation program. These awards are earned based upon achievement of certain financial performance targets over a three three three The following table summarizes the activity during the year ended December 31, 2021 Shares Weighted-Average Grant Date Fair Value Nonvested at beginning of year 124,219 $ 69.68 Granted 57,195 78.39 Vested (43,621 ) 67.88 Forfeited (7,441 ) 72.25 Nonvested at end of year 130,352 $ 73.96 During the year ended December 31, 2020, December 31, 2019 December 31, 2021 Restricted Stock Units We grant restricted stock units to employees and non-employee directors, which generally vest within three The following table summarizes the activity during the year ended December 31, 2021 Shares Weighted-Average Grant Date Fair Value Nonvested at beginning of year 97,485 $ 64.95 Granted 61,121 82.44 Vested (54,752 ) 59.28 Forfeited (12,883 ) 79.44 Nonvested at end of year 90,971 $ 78.06 The total fair value of shares vested during the years ended December 31, 2021, 2020 2019 December 31, 2021 Share-Based Liabilities As of December 31, 2021 2020

Note 19 - Income Attributable t

Note 19 - Income Attributable to Tennant Company Per Share	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	19. Income Attributable to Tennant Company Per Share The computations of basic and diluted earnings attributable to Tennant Company per share for the years ended December 31 2021 2020 2019 Numerator: Net income attributable to Tennant Company $ 64.9 $ 33.7 $ 45.8 Denominator: Basic - weighted average shares outstanding 18,499,674 18,349,724 18,118,486 Effect of dilutive securities 349,543 285,278 334,659 Diluted - weighted average shares outstanding 18,849,217 18,635,002 18,453,145 Basic earnings per share attributable to Tennant Company $ 3.51 $ 1.84 $ 2.53 Diluted earnings per share attributable to Tennant Company $ 3.44 $ 1.81 $ 2.48 Excluded from the dilutive securities shown above were options to purchase and shares to be paid out under share-based compensation plans of 171,273, 610,118 and 552,402 shares of common stock during 2021 2020 2019

Note 20 - Segment Reporting

Note 20 - Segment Reporting	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	20. Segment Reporting We are organized into four operating segments: North America; Latin America; Europe, Middle East, Africa; and Asia Pacific. We combine our North America and Latin America operating segments into the "Americas" for reporting net sales by geographic area. In accordance with the objective and basic principles of the applicable accounting guidance, we aggregate our operating segments into one reportable segment that consists of the design, manufacture and sale of products used primarily in the maintenance of nonresidential surfaces. The following table presents net sales by geographic area for the three December 31: 2021 2020 2019 Net Sales: United States $ 566.4 $ 546.2 $ 609.6 Other Americas 91.9 84.8 112.8 Americas 658.3 631.0 722.4 Europe, Middle East, Africa 331.9 278.2 307.6 Asia Pacific 100.6 91.8 107.6 Total $ 1,090.8 $ 1,001.0 $ 1,137.6 Accounting policies of the operations in various operating segments are the same as those described in Note 1. no 10% No 10% The following table presents long-lived assets by geographic area as of December 31: 2021 2020 2019 Long-lived assets: United States $ 106.6 $ 121.9 $ 114.5 Other Americas 18.8 14.7 12.8 Americas 125.4 136.6 127.3 Italy 280.4 321.5 325.2 Other Europe, Middle East, Africa 36.2 34.0 28.6 Europe, Middle East, Africa 316.6 355.5 353.8 Asia Pacific 35.8 37.5 36.6 Total $ 477.8 $ 529.6 $ 517.7 Long-lived assets consist of property, plant and equipment, goodwill, intangible assets and certain other assets. Apart from the United States and Italy shown in the table above, there are no 10%

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	Schedule II - Valuation and Qualifying Accounts (In millions) 2021 2020 2019 Allowance for doubtful accounts: Balance at beginning of year $ 4.6 $ 3.6 $ 2.5 Charged to costs and expenses 1.5 2.2 2.5 Reclassification (a) — — 0.5 Charged to other accounts (b) 0.3 — — Deductions (c) (1.1 ) (1.2 ) (1.9 ) Balance at end of year $ 5.3 $ 4.6 $ 3.6 Sales returns reserve: Balance at beginning of year $ 1.0 $ 1.2 $ 1.3 Charged to costs and expenses 0.1 0.2 0.1 Deductions (c) (0.1 ) (0.4 ) (0.2 ) Balance at end of year $ 1.0 $ 1.0 $ 1.2 Allowance for excess and obsolete inventories: Balance at beginning of year $ 13.6 $ 9.8 $ 5.6 Charged to costs and expenses 1.7 4.4 4.6 Charged to other accounts (b) (0.3 ) 0.2 — Deductions (d) (0.7 ) (0.8 ) (0.4 ) Balance at end of year $ 14.3 $ 13.6 $ 9.8 Valuation allowance for deferred tax assets: Balance at beginning of year $ 7.5 $ 6.2 $ 11.5 Charged to costs and expenses (2.6 ) 0.9 (5.2 ) Charged to other accounts (b) (0.1 ) 0.4 (0.1 ) Balance at end of year $ 4.8 $ 7.5 $ 6.2 Warranty reserve: Balance at beginning of year $ 11.1 $ 12.7 $ 13.1 Charged to costs and expenses 8.5 11.9 11.1 Charged to other accounts (b) (0.2 ) 0.1 — Deductions (e) (9.0 ) (13.6 ) (11.5 ) Balance at end of year $ 10.4 $ 11.1 $ 12.7 (a) Includes amount reclassified between allowance for doubtful accounts and other receivables related to a customer's open receivables balance for proper classification and acquisition-related adjustments. (b) Primarily includes impact from foreign currency fluctuations. (c) Includes accounts determined to be uncollectible and charged against reserves, net of collections on accounts previously charged against reserves. (d) Includes inventory identified as excess, slow moving or obsolete and charged against reserves. (e) Includes warranty claims charged against reserves. All other schedules are omitted because they are not

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Reclassification, Comparability Adjustment [Policy Text Block]	Reclassification December 31, 2020
Consolidation, Policy [Policy Text Block]	Consolidation
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Translation of Non-U.S. Currency December 31, 2021, 2020 2019 not
Use of Estimates, Policy [Policy Text Block]	Use of Estimates
Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents three
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Restricted Cash December 31, 2021 2020
Receivable [Policy Text Block]	Receivables may may not Our reserves are also based on amounts determined by using percentages applied to trade receivables, using a loss rate method. We considered the following in determining the expected loss rate: ( 1 2 3 three not During the fourth 2021,
Inventory, Policy [Policy Text Block]	Inventories first first first
Property, Plant and Equipment, Policy [Policy Text Block]	Property, Plant and Equipment
Lessee, Leases [Policy Text Block]	Leases Operating leases with an initial term of 12 not not 1 2 3 Finance leases are not
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill October 1 may one first not may In 2021,
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	Intangible Assets
Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets and Assets Held for Sale may not Assets held for sale are measured at the lower of their carrying value or fair value less costs to sell. Upon retirement or disposition, the asset cost and related accumulated depreciation or amortization are removed from the accounts and a gain or loss is recognized based on the difference between the fair value of proceeds received and carrying value of the assets held for sale.
Stockholders' Equity, Policy [Policy Text Block]	Purchase of Common Stock 2016 2015 not
Guarantees, Indemnifications and Warranties Policies [Policy Text Block]	Warranty one four first six nine
Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block]	Pension and Profit Sharing Plans
Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block]	Postretirement Benefits January 1, 1999.
Derivatives, Policy [Policy Text Block]	Derivative Financial Instruments may not We account for our foreign currency hedging instruments as either assets or liabilities on the consolidated balance sheets and measure them at fair value. Gains and losses resulting from changes in fair value are accounted for depending on the use of the derivative and whether it is designated and qualifies for hedge accounting. Gains and losses from foreign exchange forward contracts that hedge certain balance sheet positions are recorded each period to net foreign currency transaction loss in our consolidated statements of income. Foreign exchange option contracts or forward contracts hedging forecasted foreign currency revenue are designated as cash flow hedges under accounting for derivative instruments and hedging activities, with gains and losses recorded each period to accumulated other comprehensive loss in our consolidated balance sheets, until the forecasted transaction occurs. When the forecasted transaction occurs, we reclassify the related gain or loss on the cash flow hedge to net sales. In the event the underlying forecasted transaction does not not not not
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition not not not one In general, we transfer control and recognize a sale at the point in time when products are shipped from our manufacturing facilities both direct to consumers and to distributors. Service revenue is recognized in the period the service is performed or ratably over the period of the related service contract. Consideration related to service contracts is deferred if the proceeds are received in advance of the satisfaction of the performance obligations and recognized over the contract period as the performance obligation is met. We use an output method to measure progress toward completion for certain prepaid service contracts, as this method appropriately depicts performance toward satisfaction of the performance obligations. For contracts with multiple performance obligations (i.e., a product and service component), we allocate the transaction price to the performance obligations in proportion to their stand-alone selling prices. We use an observable price to determine the stand-alone selling price for separate performance obligations. When allocating on a relative stand-alone selling price basis, any discounts contained within the contract are allocated proportionately to all of the performance obligations in the contract. We generally expense the incremental costs of obtaining a contract when incurred because the amortization period would be less than one We do not one not one
Share-based Payment Arrangement [Policy Text Block]	Share-Based Compensation Restricted share awards and units are recorded as compensation cost over the requisite service periods based on the market value on the date of grant. To determine the amount of compensation cost to be recognized in each period for these awards and for option awards, we account for forfeitures as they occur. Performance share awards are stock awards where the ultimate number of shares issued will be contingent on the Company’s performance against certain performance goals. The Compensation Committee has the ability to adjust performance goals or modify the manner of measuring or evaluating a performance goal using its discretion. The fair value of each PSU is based on the market value on the date of grant. We recognize expense related to the estimated vesting of our PSUs granted. The estimated vesting of the PSUs is based on the probability of achieving certain performance metrics over the specified performance period. To determine the amount of compensation cost to be recognized in each period, we estimate forfeitures.
Research and Development Expense, Policy [Policy Text Block]	Research and Development
Advertising Cost [Policy Text Block]	Advertising Costs 2021 2020 2019
Income Tax, Policy [Policy Text Block]	Income Taxes not not first
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Share not

Note 3 - Revenue (Tables)

Note 3 - Revenue (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Disaggregation of Revenue [Table Text Block]	2021 2020 2019 Americas $ 658.3 $ 631.0 $ 722.4 Europe, Middle East and Africa (EMEA) 331.9 278.2 307.6 Asia Pacific (APAC) 100.6 91.8 107.6 Total $ 1,090.8 $ 1,001.0 $ 1,137.6 2021 2020 2019 Equipment $ 679.9 $ 629.7 $ 741.8 Parts and consumables 249.3 205.8 221.9 Specialty surface coatings (a) 1.5 22.7 25.7 Service and other 160.1 142.8 148.2 Total $ 1,090.8 $ 1,001.0 $ 1,137.6 2021 2020 2019 Sales direct to consumer $ 692.4 $ 664.9 $ 750.9 Sales to distributors 398.4 336.1 386.7 Total $ 1,090.8 $ 1,001.0 $ 1,137.6
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	2021 2020 Beginning balance $ 12.1 $ 13.7 Additions to sales incentive accrual 38.0 18.2 Contract payments (30.0 ) (20.0 ) Foreign currency fluctuations (0.2 ) 0.2 Ending balance $ 19.9 $ 12.1 2021 2020 Beginning balance $ 9.3 $ 10.7 Increase in deferred revenue representing our obligation to satisfy future performance obligations 34.5 21.0 Decrease in deferred revenue for amounts recognized in net sales for satisfied performance obligations (32.5 ) (21.8 ) Foreign currency fluctuations (0.1 ) (0.6 ) Ending balance $ 11.2 $ 9.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	2022 $ 7.7 2023 1.9 2024 1.1 2025 0.4 2026 0.1 Thereafter — Total $ 11.2

Note 4 - Management Actions (Ta

Note 4 - Management Actions (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	2021 2020 Beginning balance $ 4.5 $ 4.5 New charges 4.1 6.2 Cash payments (2.9 ) (5.4 ) Foreign currency adjustments (0.2 ) 0.2 Adjustment to accrual (0.6 ) (1.0 ) Ending balance $ 4.9 $ 4.5

Note 6 - Inventories (Tables)

Note 6 - Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Inventory, Current [Table Text Block]	2021 2020 Inventories carried at LIFO: Finished goods (a) $ 54.0 $ 42.4 Raw materials and work-in-process 42.4 21.6 Excess of FIFO over LIFO cost (b) (43.0 ) (31.4 ) Total LIFO inventories $ 53.4 $ 32.6 Inventories carried at FIFO: Finished goods (a) $ 53.8 $ 55.0 Raw materials and work-in-process 53.4 40.1 Total FIFO inventories $ 107.2 $ 95.1 Total inventories $ 160.6 $ 127.7

Note 7 - Property, Plant and _2

Note 7 - Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Property, Plant and Equipment [Table Text Block]	2021 2020 Property, plant and equipment: Land $ 21.7 $ 23.3 Buildings and improvements 125.7 131.5 Machinery and manufacturing equipment 152.6 157.0 Office equipment 125.2 118.0 Construction in progress 6.0 7.7 Total property, plant and equipment 431.2 437.5 Less: accumulated depreciation (258.4 ) (252.0 ) Property, plant and equipment, net $ 172.8 $ 185.5

Note 8 - Goodwill and Intangi_2

Note 8 - Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Goodwill [Table Text Block]	Accumulated Impairment Goodwill Losses Total Balance as of December 31, 2021 $ 233.9 $ (40.8 ) $ 193.1 Divestiture (1.7 ) — (1.7 ) Foreign currency fluctuations (13.9 ) 0.9 (13.0 ) Balance as of December 31, 2020 $ 249.5 $ (41.7 ) $ 207.8 Foreign currency fluctuations 14.4 (1.7 ) 12.7 Balance as of December 31, 2019 $ 235.1 $ (40.0 ) $ 195.1
Schedule of Finite-Lived Intangible Assets [Table Text Block]	Customer Trade Lists Names Technology Total Balance as of December 31, 2021 Original cost $ 155.4 $ 30.3 $ 17.0 $ 202.7 Accumulated amortization (80.0 ) (13.9 ) (10.8 ) (104.7 ) Carrying amount $ 75.4 $ 16.4 $ 6.2 $ 98.0 Weighted-average original life (in years) 15 11 11 Balance as of December 31, 2020 Original cost $ 166.2 $ 34.4 $ 17.9 $ 218.5 Accumulated amortization (70.3 ) (12.3 ) (9.7 ) (92.3 ) Carrying amount $ 95.9 $ 22.1 $ 8.2 $ 126.2 Weighted-average original life (in years) 15 11 11
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2022 $ 16.9 2023 15.4 2024 13.9 2025 12.5 2026 11.1 Thereafter 28.2 Total $ 98.0

Note 9 - Debt (Tables)

Note 9 - Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Debt [Table Text Block]	2021 2020 Senior unsecured notes $ — $ 300.0 Credit facility borrowings: Revolving credit facility borrowings 168.0 10.0 Term loan facility borrowings 98.8 — Secured borrowings 0.7 1.5 Finance lease liabilities 0.1 0.1 Unamortized debt issuance costs — (3.1 ) Total debt 267.6 308.5 Less: current portion of long-term debt (a) (4.2 ) (10.9 ) Long-term debt $ 263.4 $ 297.6
Schedule of Maturities of Long-term Debt [Table Text Block]	2022 $ 4.2 2023 5.3 2024 6.3 2025 8.8 2026 243.0 Thereafter — Total aggregate maturities $ 267.6

Note 10 - Other Current Liabi_2

Note 10 - Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Other Assets and Other Liabilities [Table Text Block]	2021 2020 Other current liabilities: Taxes $ 13.8 $ 12.5 Warranty 10.4 11.1 Deferred revenue 7.7 5.9 Customer sales incentives 19.9 12.1 Freight 7.1 4.6 Restructuring 4.9 4.5 Operating leases 16.4 16.3 Cash flow hedge liabilities 10.4 — Miscellaneous accrued expenses 13.4 16.4 Total other current liabilities $ 104.0 $ 83.4

Note 11 - Derivatives (Tables)

Note 11 - Derivatives (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	Derivative Assets Derivative Liabilities Balance Sheet Location December 31, 2021 December 31, 2020 Balance Sheet Location December 31, 2021 December 31, 2020 Derivatives designated as hedging instruments: Foreign currency forward contracts (a) Other current assets $ — $ 1.9 Other current liabilities $ 10.4 $ — Foreign currency forward contracts (a) Other assets — — Other liabilities — 24.1 Derivatives not designated as hedging instruments: Foreign currency forward contracts (a) Other current assets 0.3 0.4 Other current liabilities 0.4 0.7
Derivative Instruments, Gain (Loss) [Table Text Block]	2021 2020 Total Amount of Gain (Loss) on Cash Flow Hedge Activity Total Amount of Gain (Loss) on Cash Flow Hedge Activity Net sales $ 1,090.8 $ (0.4 ) $ 1,001.0 $ (0.2 ) Interest expense, net (7.3 ) 2.4 (17.4 ) 2.7 Net foreign currency transaction loss (0.7 ) 12.7 (5.3 ) (15.0 ) 2021 2020 2019 Foreign Currency Option Contracts Foreign Currency Forward Contracts Foreign Currency Option Contracts Foreign Currency Forward Contracts Foreign Currency Option Contracts Foreign Currency Forward Contracts Derivatives in cash flow hedging relationships: Net gain (loss) recognized in other comprehensive (loss) income, net of tax (a) $ — $ 10.8 $ (0.1 ) $ (7.4 ) $ (0.3 ) $ 8.6 Net loss reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to net sales — (0.3 ) — (0.1 ) — — Net gain reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to interest income — 1.9 — 2.0 — 2.2 Net gain (loss) reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to net foreign currency transaction losses — 9.7 — (11.6 ) — 2.6 Derivatives not designated as hedging instruments: Net gain (loss) recognized in earnings (b) — 2.5 — (5.0 ) — (1.3 )

Note 12 - Fair Value Measurem_2

Note 12 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 0.9 — $ 0.9 — Total assets 0.9 — 0.9 — Liabilities: Foreign currency forward exchange contracts 11.4 — 11.4 — Total liabilities $ 11.4 — $ 11.4 $ — Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 3.0 — $ 3.0 — Total assets 3.0 — 3.0 — Liabilities: Foreign currency forward exchange contracts 25.5 — 25.5 — Contingent consideration 1.8 — — 1.8 Total liabilities $ 27.3 — $ 25.5 $ 1.8

Note 13 - Retirement Benefit _2

Note 13 - Retirement Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Allocation of Plan Assets [Table Text Block]	Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs Significant Unobservable Inputs Asset category Fair Value (Level 1) (Level 2) (Level 3) Investment account held by pension plan (a) $ 12.9 $ — $ — $ 12.9 Total $ 12.9 $ — $ — $ 12.9 Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs Significant Unobservable Inputs Asset category Fair Value (Level 1) (Level 2) (Level 3) Investment account held by pension plan (a) $ 13.3 — — $ 13.3 Total $ 13.3 $ — $ — $ 13.3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	2021 2020 Fair value at beginning of year $ 13.3 $ 12.2 Purchases, sales, issuances and settlements, net 0.2 0.1 Net (loss) gain (0.4 ) 0.6 Foreign currency (0.2 ) 0.4 Fair value at end of year $ 12.9 $ 13.3
Defined Benefit Plan, Assumptions [Table Text Block]	Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2021 2020 2021 2020 Discount rate 2.54 % 2.06 % 1.59 % 1.05 % 2.53 % 2.07 % Rate of compensation increase — % — % — % — % — % — % Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Discount rate 2.06 % 3.01 % 3.95 % 1.05 % 1.42 % 1.92 % 2.07 % 3.06 % 3.95 % Expected long-term rate of return on plan assets — % — % — % 2.70 % 3.30 % 3.80 % — % — % — % Rate of compensation increase — % — % — % — % — % — % — % — % — %
Schedule of Accumulated and Projected Benefit Obligations [Table Text Block]	2021 2020 U.S. Nonqualified Plan $ 1.1 $ 1.2 U.K. Pension Plan 11.4 12.2 German Pension Plan 1.0 1.2 Italian Pension Plan 3.7 4.2
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]	2021 2020 Accumulated benefit obligation $ 5.8 $ 6.6 Fair value of plan assets — —
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]	2021 2020 Projected benefit obligation $ 5.8 $ 6.6 Fair value of plan assets — —
Schedule of Health Care Cost Trend Rates [Table Text Block]	2021 2020 Healthcare cost trend rate assumption for the next year Pre-65 5.40 % 5.90 % Healthcare cost trend rate assumption for the next year Post-65 5.90 % 6.20 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.00 % 4.50 % Year that the rate reaches the ultimate trend rate 2045 2037
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2021 2020 2021 2020 Change in benefit obligation: Benefit obligation at beginning of year $ 1.2 $ 1.3 $ 17.6 $ 15.7 $ 7.3 $ 7.8 Service cost — — — — 0.1 0.1 Interest cost 0.1 — 0.2 0.2 0.1 0.2 Actuarial loss (gain) — — (0.6 ) 1.7 0.6 (0.3 ) Foreign exchange — — (0.4 ) 0.8 — — Settlement — — (0.3 ) — — — Benefits paid (0.2 ) (0.1 ) (0.3 ) (0.8 ) (1.1 ) (0.5 ) Benefit obligation at end of year $ 1.1 $ 1.2 $ 16.2 $ 17.6 $ 7.0 $ 7.3 Change in fair value of plan assets and net accrued liabilities: Fair value of plan assets at beginning of year $ — $ — $ 13.3 $ 12.2 $ — $ — Actual return on plan assets — — (0.4 ) 0.6 — — Employer contributions 0.1 0.1 0.8 0.9 1.0 0.5 Foreign exchange — — (0.2 ) 0.4 — — Settlement — — (0.3 ) — — — Benefits paid (0.1 ) (0.1 ) (0.3 ) (0.8 ) (1.0 ) (0.5 ) Fair value of plan assets at end of year — — 12.9 13.3 — — Funded status at end of year $ (1.1 ) $ (1.2 ) $ (3.3 ) $ (4.3 ) $ (7.0 ) $ (7.3 ) Amounts recognized in the consolidated balance sheets consist of: Noncurrent other assets $ — $ — $ 1.4 $ 1.1 $ — $ — Current liabilities (0.1 ) (0.1 ) (0.2 ) — (0.7 ) (0.7 ) Long-term liabilities (1.0 ) (1.1 ) (4.5 ) (5.4 ) (6.3 ) (6.6 ) Net accrued liability $ (1.1 ) $ (1.2 ) $ (3.3 ) $ (4.3 ) $ (7.0 ) $ (7.3 ) Amounts recognized in accumulated other comprehensive loss consist of: Prior service cost $ — $ — $ (0.2 ) $ (0.2 ) $ — $ — Net actuarial (loss) gain (0.9 ) (0.9 ) (2.1 ) (2.0 ) 0.2 0.8 Accumulated other comprehensive (loss) income $ (0.9 ) $ (0.9 ) $ (2.3 ) $ (2.2 ) $ 0.2 $ 0.8
Schedule of Net Benefit Costs [Table Text Block]	Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Service cost $ — $ — $ — $ — $ — $ — $ 0.1 $ 0.1 $ — Interest cost 0.1 — 0.1 0.2 0.2 0.3 0.1 0.2 0.3 Expected return on plan assets — — — (0.4 ) (0.3 ) (0.4 ) — — — Amortization of net actuarial loss (gain) — 0.1 — 0.1 — — — — (0.1 ) Net periodic benefit cost (credit) $ 0.1 $ 0.1 $ 0.1 $ (0.1 ) $ (0.1 ) $ (0.1 ) $ 0.2 $ 0.3 $ 0.2
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	Non-U.S. Postretirement U.S. Nonqualified Plan Pension Benefits Medical Benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Prior service cost $ — $ — $ — $ — $ 0.1 $ — $ — $ — $ — Net actuarial loss (gain) — — 0.1 0.2 1.6 0.4 0.6 (0.3 ) (0.1 ) Amortization of net actuarial (loss) gain — (0.1 ) — (0.1 ) — — — — 0.1 Total recognized in other comprehensive (income) loss $ — $ (0.1 ) $ 0.1 $ 0.1 $ 1.7 $ 0.4 $ 0.6 $ (0.3 ) $ — Total recognized in net benefit cost (credit) and other comprehensive loss (income) $ 0.1 $ — $ 0.2 $ — $ 1.6 $ 0.3 $ 0.8 $ — $ 0.2
Schedule of Expected Benefit Payments [Table Text Block]	U.S. Non-U.S. Postretirement Nonqualified Plan Pension Benefits Medical Benefits 2022 $ 0.1 $ 0.6 $ 0.7 2023 0.1 0.6 0.7 2024 0.1 0.6 0.7 2025 0.1 0.6 0.6 2026 0.1 0.6 0.6 2027 to 2030 0.4 3.5 2.5 Total $ 0.9 $ 6.5 $ 5.8

Note 14 - Stockholders' Equity

Note 14 - Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Foreign Currency Translation Adjustments Pension and Postretirement Medical Benefits Cash Flow Hedge Total December 31, 2019 $ (36.3 ) $ (0.7 ) $ (1.5 ) $ (38.5 ) Other comprehensive income (loss) before reclassifications 17.2 (1.0 ) (7.5 ) 8.7 Amounts reclassified from accumulated other comprehensive loss — — 9.7 9.7 Net current period other comprehensive income (loss) 17.2 (1.0 ) 2.2 18.4 December 31, 2020 $ (19.1 ) $ (1.7 ) $ 0.7 $ (20.1 ) Other comprehensive (loss) income before reclassifications (16.9 ) (0.4 ) 10.8 (6.5 ) Amounts reclassified from accumulated other comprehensive loss — — (11.3 ) (11.3 ) Net current period other comprehensive loss (16.9 ) (0.4 ) (0.5 ) (17.8 ) December 31, 2021 $ (36.0 ) $ (2.1 ) $ 0.2 $ (37.9 )

Note 15 - Leases (Tables)

Note 15 - Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Assets and Liabilities, Lessee [Table Text Block]	Leases Classification 2021 2020 Assets Operating lease assets Operating lease assets $ 41.3 $ 44.5 Finance lease assets Property, plant and equipment (a) 0.1 0.1 Total leased assets $ 41.4 $ 44.6 Liabilities Current: Operating Other current liabilities $ 16.4 $ 16.3 Finance Current portion of long-term debt — 0.1 Noncurrent: Operating Long-term operating lease liabilities 25.4 28.7 Finance Long-term debt 0.1 — Total lease liabilities $ 41.9 $ 45.1
Lease, Cost [Table Text Block]	Lease Cost 2021 2020 2019 Operating lease cost (a) $ 26.6 $ 25.1 $ 27.5 Finance lease cost (b) 0.1 0.2 0.3 Total lease cost $ 26.7 $ 25.3 $ 27.8 Lease Term and Discount Rate 2021 2020 Weighted-average remaining lease term (years): Operating leases 3.0 3.4 Finance leases 4.2 1.0 Weighted-average discount rate: Operating leases 3.5% 3.8% Finance leases 2.2% 2.5% Other Information 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $20.2 $19.7 Financing cash flows from finance leases 0.1 0.1 Lease assets obtained in exchange for new finance lease liabilities 0.1 — Lease assets obtained in exchange for new operating lease liabilities 15.7 14.8
Lessee, Lease Liability, Maturity [Table Text Block]	Maturity of Lease Liabilities Operating Leases Finance Leases Total 2022 $ 17.5 $ — $ 17.5 2023 14.1 0.1 14.2 2024 7.7 — 7.7 2025 2.9 — 2.9 2026 1.1 — 1.1 Thereafter 0.8 — 0.8 Total lease payments $ 44.1 $ 0.1 $ 44.2 Less: Interest (2.3 ) — (2.3 ) Present value of lease liabilities $ 41.8 $ 0.1 $ 41.9

Note 17 - Income Taxes (Tables)

Note 17 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	2021 2020 2019 U.S. operations $ 47.5 $ 46.6 $ 50.1 Foreign operations 26.6 (5.5 ) 3.9 Total $ 74.1 $ 41.1 $ 54.0
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	2021 2020 2019 Current: Federal $ 11.1 $ 4.2 $ 9.6 Foreign 11.2 3.8 5.6 State 1.9 1.8 2.1 Total current $ 24.2 $ 9.8 $ 17.3 Deferred: Federal $ 0.6 $ 4.4 $ (2.4 ) Foreign (15.5 ) (6.9 ) (6.7 ) State (0.1 ) 0.1 (0.1 ) Total deferred $ (15.0 ) $ (2.4 ) $ (9.2 ) Total: Federal $ 11.7 $ 8.6 $ 7.2 Foreign (4.3 ) (3.1 ) (1.1 ) State 1.8 1.9 2.0 Total income tax expense $ 9.2 $ 7.4 $ 8.1
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2021 2020 2019 Tax at statutory rate 21.0 % 21.0 % 21.0 % Increases (decreases) in the tax rate from: State and local taxes, net of federal benefit 2.2 3.5 1.9 Effect of foreign operations (6.3 ) (3.7 ) 3.5 Effect of changes in valuation allowances (4.5 ) 0.5 (9.7 ) Excess tax benefits on share-based compensation 1.8 2.1 2.5 Share-based payments (0.9 ) (0.9 ) (2.0 ) Research and development credit (1.4 ) (3.3 ) (1.9 ) Other, net 0.6 (1.3 ) (0.2 ) Effective income tax rate 12.5 % 17.9 % 15.1 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2021 2020 Deferred tax assets: Inventory $ 3.7 $ 4.5 Compensation and employee benefits 14.8 14.0 Warranty reserves 2.2 2.3 Allowance for doubtful accounts and deferred revenue 2.3 2.3 Operating lease liabilities 8.2 11.2 Tax loss carryforwards 7.7 9.6 Tax credit carryforwards 4.5 3.6 Other 0.7 2.5 Gross deferred tax assets $ 44.1 $ 50.0 Less: valuation allowance (4.8 ) (7.5 ) Total net deferred tax assets $ 39.3 $ 42.5 Deferred tax liabilities: Operating lease assets $ 8.1 $ 11.2 Fixed assets 13.0 14.0 Goodwill and intangible assets 23.0 41.5 Total deferred tax liabilities $ 44.1 $ 66.7 Net deferred tax liabilities $ (4.8 ) $ (24.2 )
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	2021 2020 Beginning balance $ 6.4 $ 7.5 (Decreases) increases as a result of tax positions taken during a prior period (0.1 ) 0.3 Increases as a result of tax positions taken during the current year 0.5 0.4 Decreases relating to settlement with tax authorities — (0.8 ) Decreases as a result of a lapse of the applicable statute of limitations (2.1 ) (1.4 ) Increases as a result of foreign currency fluctuations — 0.4 Ending balance $ 4.7 $ 6.4

Note 18 - Share-based Compens_2

Note 18 - Share-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	2021 2020 2019 Expected volatility 34 - 35 % 27 - 32 % 26 - 27 % Weighted-average expected volatility 35 % 27 % 26 % Expected dividend yield 1.3 - 1.4 % 1.3 % 1.2 - 1.4 % Weighted-average expected dividend yield 1.4 % 1.3 % 1.2 % Expected term, in years 5 5 5 Risk-free interest rate 0.8 - 0.9 % 0.3 - 1.3 % 1.6 - 2.5 %
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Shares Weighted-Average Exercise Price Outstanding at beginning of year 990,663 $ 62.90 Granted 73,274 79.14 Exercised (147,890 ) 51.88 Forfeited (5,912 ) 64.42 Expired (863 ) 73.72 Outstanding at end of year 909,272 $ 65.98 Exercisable at end of year 743,371 $ 64.03
Nonvested Restricted Stock Shares Activity [Table Text Block]	Shares Weighted-Average Grant Date Fair Value Nonvested at beginning of year 94,043 $ 55.81 Granted 16,863 79.34 Vested (19,332 ) 59.81 Forfeited — — Nonvested at end of year 91,574 $ 59.30
Schedule of Nonvested Performance-based Units Activity [Table Text Block]	Shares Weighted-Average Grant Date Fair Value Nonvested at beginning of year 124,219 $ 69.68 Granted 57,195 78.39 Vested (43,621 ) 67.88 Forfeited (7,441 ) 72.25 Nonvested at end of year 130,352 $ 73.96
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	Shares Weighted-Average Grant Date Fair Value Nonvested at beginning of year 97,485 $ 64.95 Granted 61,121 82.44 Vested (54,752 ) 59.28 Forfeited (12,883 ) 79.44 Nonvested at end of year 90,971 $ 78.06

Note 19 - Income Attributable_2

Note 19 - Income Attributable to Tennant Company Per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	2021 2020 2019 Numerator: Net income attributable to Tennant Company $ 64.9 $ 33.7 $ 45.8 Denominator: Basic - weighted average shares outstanding 18,499,674 18,349,724 18,118,486 Effect of dilutive securities 349,543 285,278 334,659 Diluted - weighted average shares outstanding 18,849,217 18,635,002 18,453,145 Basic earnings per share attributable to Tennant Company $ 3.51 $ 1.84 $ 2.53 Diluted earnings per share attributable to Tennant Company $ 3.44 $ 1.81 $ 2.48

Note 20 - Segment Reporting (Ta

Note 20 - Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	2021 2020 2019 Net Sales: United States $ 566.4 $ 546.2 $ 609.6 Other Americas 91.9 84.8 112.8 Americas 658.3 631.0 722.4 Europe, Middle East, Africa 331.9 278.2 307.6 Asia Pacific 100.6 91.8 107.6 Total $ 1,090.8 $ 1,001.0 $ 1,137.6 2021 2020 2019 Long-lived assets: United States $ 106.6 $ 121.9 $ 114.5 Other Americas 18.8 14.7 12.8 Americas 125.4 136.6 127.3 Italy 280.4 321.5 325.2 Other Europe, Middle East, Africa 36.2 34.0 28.6 Europe, Middle East, Africa 316.6 355.5 353.8 Asia Pacific 35.8 37.5 36.6 Total $ 477.8 $ 529.6 $ 517.7

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table Text Block]	(In millions) 2021 2020 2019 Allowance for doubtful accounts: Balance at beginning of year $ 4.6 $ 3.6 $ 2.5 Charged to costs and expenses 1.5 2.2 2.5 Reclassification (a) — — 0.5 Charged to other accounts (b) 0.3 — — Deductions (c) (1.1 ) (1.2 ) (1.9 ) Balance at end of year $ 5.3 $ 4.6 $ 3.6 Sales returns reserve: Balance at beginning of year $ 1.0 $ 1.2 $ 1.3 Charged to costs and expenses 0.1 0.2 0.1 Deductions (c) (0.1 ) (0.4 ) (0.2 ) Balance at end of year $ 1.0 $ 1.0 $ 1.2 Allowance for excess and obsolete inventories: Balance at beginning of year $ 13.6 $ 9.8 $ 5.6 Charged to costs and expenses 1.7 4.4 4.6 Charged to other accounts (b) (0.3 ) 0.2 — Deductions (d) (0.7 ) (0.8 ) (0.4 ) Balance at end of year $ 14.3 $ 13.6 $ 9.8 Valuation allowance for deferred tax assets: Balance at beginning of year $ 7.5 $ 6.2 $ 11.5 Charged to costs and expenses (2.6 ) 0.9 (5.2 ) Charged to other accounts (b) (0.1 ) 0.4 (0.1 ) Balance at end of year $ 4.8 $ 7.5 $ 6.2 Warranty reserve: Balance at beginning of year $ 11.1 $ 12.7 $ 13.1 Charged to costs and expenses 8.5 11.9 11.1 Charged to other accounts (b) (0.2 ) 0.1 — Deductions (e) (9.0 ) (13.6 ) (11.5 ) Balance at end of year $ 10.4 $ 11.1 $ 12.7

Note 1 - Operations and Summa_2

Note 1 - Operations and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Selling, General and Administrative Expense, Total		$ 321,900	$ 314,000	$ 357,200
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Ending Balance	$ 36,000	36,000	(19,100)	(36,300)
Restricted Cash and Cash Equivalents, Total	500	500	600
Financing Receivable, after Allowance for Credit Loss, Total	$ 3,100	3,100
Financing Arrangement, Term (Year)	8 years
Goodwill, Impairment Loss		$ 0	0
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)	1,193,414	1,193,414
Advertising Expense		$ 4,600	5,000	$ 8,200
Minimum [Member]
Warranty Term (Year)		1 year
Maximum [Member]
Warranty Term (Year)		4 years
Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)		30 years
Property, Plant and Equipment, Other Types [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years
Property, Plant and Equipment, Other Types [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		15 years
Reclassification from Selling and Administrative Expense to Costs of Sales [Member]
Selling, General and Administrative Expense, Total			$ (5,000)

Note 3 - Revenue (Details Textu

Note 3 - Revenue (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Contract with Customer, Liability, Current	$ 7.7	$ 5.9
Other Current Liabilities [Member] | Maintenance [Member]
Contract with Customer, Liability, Current	7.7	5.9
Other Liabilities [Member] | Maintenance [Member]
Contract with Customer, Liability, Noncurrent	$ 3.5	$ 3.4
Short-term Contract with Customer [Member]
Standard Prepaid Maintenance Contract Time Period (Month)	12 months
Long-term Contract with Customer [Member]
Standard Prepaid Maintenance Contract Time Period (Month)	60 months

Note 3 - Revenue - Disaggregati

Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales	$ 1,090.8	$ 1,001	$ 1,137.6
Sales Channel, Directly to Consumer [Member]
Net sales	692.4	664.9	750.9
Sales Channel, Through Intermediary [Member]
Net sales	398.4	336.1	386.7
Equipment Sales [Member]
Net sales	679.9	629.7	741.8
Parts and Consumables [Member]
Net sales	249.3	205.8	221.9
Specialty Service Coatings [Member]
Net sales	1.5	22.7	25.7
Service and Other [Member]
Net sales	160.1	142.8	148.2
Americas [Member]
Net sales	658.3	631	722.4
EMEA [Member]
Net sales	331.9	278.2	307.6
Asia Pacific [Member]
Net sales	$ 100.6	$ 91.8	$ 107.6

Note 3 - Revenue - Contract Lia

Note 3 - Revenue - Contract Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Sales Incentives [Member]
Beginning balance	$ 12.1	$ 13.7
Additions to sales incentive accrual	38	18.2
Contract payments	(30)	(20)
Foreign currency fluctuations	(0.2)	0.2
Ending balance	19.9	12.1
Maintenance [Member]
Foreign currency fluctuations	(0.1)	(0.6)
Beginning balance	9.3	10.7
Increase in deferred revenue representing our obligation to satisfy future performance obligations	34.5	21
Decrease in deferred revenue for amounts recognized in net sales for satisfied performance obligations	(32.5)	(21.8)
Ending balance	$ 11.2	$ 9.3

Note 3 - Revenue - Remaining Pe

Note 3 - Revenue - Remaining Performance Obligation (Details) $ in Millions	Dec. 31, 2021USD ($)
Remaining performance obligation	$ 11.2

Note 3 - Revenue - Remaining _2

Note 3 - Revenue - Remaining Performance Obligation 2 (Details) $ in Millions	Dec. 31, 2021USD ($)
Remaining performance obligation	$ 11.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Remaining performance obligation	7.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Remaining performance obligation	1.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Remaining performance obligation	1.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Remaining performance obligation	0.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Remaining performance obligation	0.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Remaining performance obligation	$ 0

Note 3 - Revenue - Remaining _3

Note 3 - Revenue - Remaining Performance Obligation (Details) (Parentheticals)	Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue performance period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue performance period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue performance period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue performance period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue performance period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue performance period (Year)	1 year

Note 4 - Management Actions (De

Note 4 - Management Actions (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Charges, Total		$ 4.1	$ 6.2
Notes Receivable, Write-down		0	0	$ 2.7
Selling, General and Administrative Expenses [Member]
Notes Receivable, Write-down	$ 2.7
Cost of Sales [Member]
Inventory Write-down			1.7	$ 3.3
Employee Severance [Member]
Restructuring Charges, Total		4.1	8.6
Employee Severance [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Charges, Total		3.3	7.1
Employee Severance [Member] | Cost of Sales [Member]
Restructuring Charges, Total		$ 0.8	1.5
Other Restructuring [Member]
Restructuring Charges, Total			$ 2.4

Note 4 - Management Actions - R

Note 4 - Management Actions - Reconciliation of Liability Balance of Severance and Related Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance	$ 4.5	$ 4.5
New charges	4.1	6.2
Cash payments	(2.9)	(5.4)
Foreign currency adjustments	(0.2)	0.2
Adjustment to accrual	(0.6)	(1)
Balance	$ 4.9	$ 4.5

Note 5 - Acquisitions and Div_2

Note 5 - Acquisitions and Divestitures (Details Textual) - USD ($) $ in Millions	Jan. 04, 2019	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Gain (Loss) on Disposition of Business			$ 9.8	$ 0	$ 0
Proceeds from Divestiture of Businesses			24.7	0	0
Payment for Contingent Consideration Liability, Financing Activities			2.5	$ 0	$ 0
Gaomei [Member]
Payments to Acquire Businesses, Gross	$ 22.4
Payment for Contingent Consideration Liability, Financing Activities			$ 2.5
Specialty Service Coatings [Member]
Gain (Loss) on Disposition of Business		$ 9.8
Proceeds from Divestiture of Businesses		$ 24.7

Note 6 - Inventories - Inventor

Note 6 - Inventories - Inventories (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Excess of FIFO over LIFO cost(b)	[1]	$ (43)	$ (31.4)
Total LIFO inventories		53.4	32.6
Total FIFO inventories		107.2	95.1
Total inventories		160.6	127.7
LIFO Inventory [Member]
Finished goods(a)	[2]	54	42.4
Raw materials and work-in-process		42.4	21.6
FIFO Inventory [Member]
Finished goods(a)	[2]	53.8	55
Raw materials and work-in-process		$ 53.4	$ 40.1
[1]	The difference between replacement cost and the stated LIFO inventory value is not materially different from the reserve for the LIFO valuation method.
[2]	Finished goods include machines, parts and consumables and component parts that are used in our products.

Note 7 - Property, Plant and _3

Note 7 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Depreciation, Total	$ 33.1	$ 32.6	$ 32.2

Note 7 - Property, Plant and _4

Note 7 - Property, Plant and Equipment - Property, Plant and Equipment and Related Accumulated Depreciation, Including Equipment under Finance Leases (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Total Property, Plant and Equipment	$ 431.2	$ 437.5
Less: accumulated depreciation	(258.4)	(252)
Property, plant and equipment, net	172.8	185.5
Land [Member]
Total Property, Plant and Equipment	21.7	23.3
Building and Building Improvements [Member]
Total Property, Plant and Equipment	125.7	131.5
Machinery and Equipment [Member]
Total Property, Plant and Equipment	152.6	157
Office Equipment [Member]
Total Property, Plant and Equipment	125.2	118
Construction in Progress [Member]
Total Property, Plant and Equipment	$ 6	$ 7.7

Note 8 - Goodwill and Intangi_3

Note 8 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill, Impairment Loss		$ 0	$ 0
Amortization of Intangible Assets, Total		20,000	$ 20,800	$ 22,200
Customer Lists [Member]
Intangible Assets (Excluding Goodwill), Disposed of		$ 900
Trade Names [Member]
Intangible Assets (Excluding Goodwill), Disposed of	$ 1,400

Note 8 - Goodwill and Intangi_4

Note 8 - Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance	$ 233.9	$ 249.5
Balance, accumulated impairment losses	(40.8)	(41.7)
Balance, net	193.1	207.8
Divestiture	(1.7)
Foreign currency fluctuations	(13.9)	14.4
Foreign currency fluctuations, accumulated impairment losses	(0.9)	1.7
Foreign currency fluctuations, net	(13)	12.7
Balance	249.5	235.1
Balance, accumulated impairment losses	(41.7)	(40)
Balance, net	$ 207.8	$ 195.1

Note 8 - Goodwill and Intangi_5

Note 8 - Goodwill and Intangible Assets - Balances of Acquired Intangible Assets, Excluding Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Original cost	$ 202.7	$ 218.5
Accumulated amortization	(104.7)	(92.3)
Intangible assets, net	98	126.2
Customer Lists [Member]
Original cost	155.4	166.2
Accumulated amortization	(80)	(70.3)
Intangible assets, net	$ 75.4	$ 95.9
Weighted-average original life (in years) (Year)	15 years	15 years
Trade Names [Member]
Original cost	$ 30.3	$ 34.4
Accumulated amortization	(13.9)	(12.3)
Intangible assets, net	$ 16.4	$ 22.1
Weighted-average original life (in years) (Year)	11 years	11 years
Technology-Based Intangible Assets [Member]
Original cost	$ 17	$ 17.9
Accumulated amortization	(10.8)	(9.7)
Intangible assets, net	$ 6.2	$ 8.2
Weighted-average original life (in years) (Year)	11 years	11 years

Note 8 - Goodwill and Intangi_6

Note 8 - Goodwill and Intangible Assets - Estimated Aggregate Amortization Expense (Details) $ in Millions	Dec. 31, 2021USD ($)
2022	$ 16.9
2023	15.4
2024	13.9
2025	12.5
2026	11.1
Thereafter	28.2
Total	$ 98

Note 9 - Debt (Details Textual)

Note 9 - Debt (Details Textual) - USD ($) $ in Millions	Apr. 05, 2021	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017	Apr. 18, 2017
Payment for Debt Extinguishment or Debt Prepayment Cost			$ 8.4	$ 0	$ 0
Secured Debt, Current			$ 0.4
Debt, Weighted Average Interest Rate, Net of Currency Swap Contract			0.30%
Debt Including Related Cross-currency Swap Instrument [Member]
Debt, Weighted Average Interest Rate			1.30%
The 2021 Credit Agreement [Member]
Debt Instrument, Collateral, Percentage of Stock of First Tier Foreign Subsidiaries	65.00%
Debt Instrument, Dividend Payments Allowed Per Quarter	$ 7.5
Debt Instrument, Covenant, Minimum Permitted Acquisition, Alternative Requirements for Indebtedness to EBITDA Ratio	$ 50
Debt Instrument, Covenant, Minimum Leverage Ratio for Dividends or Repurchase of Stock	2.50
Debt Instrument, Restrictions, Maximum Dividends Payout or Repurchase of Stock	$ 60
Long-term Debt, Current Maturities, Total			$ 3.8
Letters of Credit Outstanding, Amount			2.9
The 2021 Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Variable Rate Floor	1.00%
The 2021 Credit Agreement [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
The 2021 Credit Agreement [Member] | Minimum [Member]
Debt Instrument, Other Restricted Payments Allowed Per Quarter	$ 60
The 2021 Credit Agreement [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	0.10%
The 2021 Credit Agreement [Member] | Minimum [Member] | LIBOR on Eurocurrency Liabilities [Member]
Debt Instrument, Basis Spread on Variable Rate	1.10%
The 2021 Credit Agreement [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	0.70%
The 2021 Credit Agreement [Member] | Maximum [Member] | LIBOR on Eurocurrency Liabilities [Member]
Debt Instrument, Basis Spread on Variable Rate	1.70%
The 2021 Credit Agreement [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 450
Line of Credit Facility, Additional Borrowings Option	$ 275
Long-term Debt, Gross			168	10
Debt Instrument, Unused Borrowing Capacity, Amount			279.1
The 2021 Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Commitment Fee Percentage	0.15%
The 2021 Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Commitment Fee Percentage	0.30%
The 2021 Credit Agreement [Member] | Term Loan [Member]
Long-term Debt, Gross			98.8
The 2021 Credit Agreement [Member] | Term Loan [Member]
Debt Instrument, Face Amount	$ 100
Long-term Debt, Gross			98.8	0
The 2017 Credit Agreement [Member]
Debt Instrument, Covenant, Senior Secured Net Indebtedness to Adjusted EBITDA Ratio, Maximum						3.50
Line of Credit Facility, Commitment Fee Amount			0.6
The 2017 Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Variable Rate Floor						0.00%
Senior Unsecured Notes [Member]
Debt Instrument, Face Amount							$ 300
Debt Instrument, Interest Rate, Stated Percentage							5.625%
Write off of Deferred Debt Issuance Cost		$ 2.9
Long-term Debt, Gross			$ 0	$ 300
Senior Unsecured Notes [Member] | Debt Redemption Call Premium [Member]
Payment for Debt Extinguishment or Debt Prepayment Cost		$ 8.4

Note 9 - Debt - Debt Outstandin

Note 9 - Debt - Debt Outstanding (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Finance lease liabilities		$ 0.1	$ 0.1
Unamortized debt issuance costs		0	(3.1)
Total debt		267.6	308.5
Less: current portion of long-term debt(a)	[1]	(4.2)	(10.9)
Long-term debt		263.4	297.6
Secured Debt [Member]
Long-term debt, gross		0.7	1.5
Senior Unsecured Notes [Member]
Long-term debt, gross		0	300
The 2021 Credit Agreement [Member] | Term Loan [Member]
Long-term debt, gross		98.8	0
The 2021 Credit Agreement [Member] | Revolving Credit Facility [Member]
Long-term debt, gross		$ 168	$ 10
[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.

Note 9 - Debt - Aggregate Matur

Note 9 - Debt - Aggregate Maturities of Outstanding Debt (Details) $ in Millions	Dec. 31, 2021USD ($)
2022, debt	$ 4.2
2023, debt	5.3
2024, debt	6.3
2025, debt	8.8
2026, debt	243
Thereafter, debt	0
Total aggregate maturities, debt	$ 267.6

Note 10 - Other Current Liabi_3

Note 10 - Other Current Liabilities - Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Taxes	$ 13.8	$ 12.5
Warranty	10.4	11.1
Deferred revenue	7.7	5.9
Customer sales incentives	19.9	12.1
Freight	7.1	4.6
Restructuring	4.9	4.5
Cash flow hedge liabilities	10.4	0
Miscellaneous accrued expenses	13.4	16.4
Total other current liabilities	104	83.4
Other Current Liabilities [Member]
Operating leases	$ 16.4	$ 16.3

Note 11 - Derivatives (Details

Note 11 - Derivatives (Details Textual) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2021EUR (€)	Dec. 31, 2021EUR (€)	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 0.4
Designated as Hedging Instrument [Member]
Derivative, Term of Contract (Year)	1 year	1 year
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount	$ 45			$ 57.3
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount	2.7
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount	$ 8.2
Currency Swap [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount | €			€ 152.4		€ 159.6
Debt Instrument, Periodic Payment, Interest | €		€ 2.4
Debt Instrument, Periodic Payment, Principal | €		€ 150

Note 11 - Derivatives - Fair Va

Note 11 - Derivatives - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Cash flow hedge liabilities		$ 10.4	$ 0
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivative assets, current	[1]	0	1.9
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Liabilities [Member]
Cash flow hedge liabilities	[1]	10.4	0
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Noncurrent Assets [Member]
Derivative assets	[1]	0	0
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Noncurrent Liabilities [Member]
Derivative liability	[1]	0	24.1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivative assets, current	[1]	0.3	0.4
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Liabilities [Member]
Cash flow hedge liabilities	[1]	$ 0.4	$ 0.7
[1]	Contracts that mature within the next 12 months are included in other current assets and other current liabilities for asset derivatives and liabilities derivatives, respectively, on our consolidated balance sheets. Contracts with maturities greater than 12 months are included in other assets and other liabilities for asset derivatives and liability derivatives, respectively, in our consolidated balance sheets. Amounts included in our consolidated balance sheets are recorded net where a right of offset exists with the same derivative counterparty.

Note 11 - Derivatives - Effect

Note 11 - Derivatives - Effect of Derivative Instruments on Consolidated Statements of Earnings (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales		$ 1,090.8	$ 1,001	$ 1,137.6
Interest expense, net		(7.3)	(17.4)	(17.8)
Net foreign currency transaction loss		(0.7)	(5.3)
Net gain (loss) recognized in other comprehensive (loss) income, net of tax(a)		(0.5)	2.2	3.5
Net loss reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to net sales		1,090.8	1,001	1,137.6
Foreign Exchange Option [Member]
Net gain (loss) recognized in earnings(b)	[1]	0	0	0
Foreign Exchange Option [Member] | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Net gain (loss) recognized in other comprehensive (loss) income, net of tax(a)	[2]	0	(0.1)	(0.3)
Foreign Exchange Option [Member] | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Net sales		0	0	0
Net foreign currency transaction loss		0	0	0
Net loss reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to net sales		0	0	0
Net gain reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to interest income		0	0	0
Foreign Exchange Forward [Member]
Net gain (loss) recognized in earnings(b)	[1]	2.5	(5)	(1.3)
Foreign Exchange Forward [Member] | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Net gain (loss) recognized in other comprehensive (loss) income, net of tax(a)	[2]	10.8	(7.4)	8.6
Foreign Exchange Forward [Member] | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Net sales		(0.3)	(0.1)	0
Net foreign currency transaction loss		9.7	(11.6)	2.6
Net loss reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to net sales		(0.3)	(0.1)	0
Net gain reclassified from accumulated other comprehensive loss into income, net of tax, effective portion to interest income		1.9	2	$ 2.2
Sales [Member]
Amount of gain (loss) on cash flow hedge activity		(0.4)	(0.2)
Interest Income [Member]
Amount of gain (loss) on cash flow hedge activity		2.4	2.7
Foreign Currency Gain (Loss) [Member]
Amount of gain (loss) on cash flow hedge activity		$ 12.7	$ (15)
[1]	Classified in net foreign currency transaction losses.
[2]	Net change in the fair value of the effective portion classified in other comprehensive (loss) income.

Note 12 - Fair Value Measurem_3

Note 12 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Payment for Contingent Consideration Liability, Financing Activities	$ 2.5	$ 0	$ 0
Debt Instrument, Fair Value Disclosure, Total	271.2
Debt and Lease Obligation, Total	267.6	$ 308.5
Gaomei [Member]
Payment for Contingent Consideration Liability, Financing Activities	$ 2.5

Note 12 - Fair Value Measurem_4

Note 12 - Fair Value Measurements - Fair Value Measurements of Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Total assets	$ 0.9	$ 3
Total liabilities	11.4	27.3
Contingent consideration		1.8
Fair Value, Inputs, Level 1 [Member]
Total assets	0	0
Total liabilities	0	0
Contingent consideration		0
Fair Value, Inputs, Level 2 [Member]
Total assets	0.9	3
Total liabilities	11.4	25.5
Contingent consideration		0
Fair Value, Inputs, Level 3 [Member]
Total assets	0	0
Total liabilities	0	1.8
Contingent consideration		1.8
Foreign Exchange Forward [Member]
Foreign currency contracts, asset	0.9	3
Foreign currency contracts, liability	11.4	25.5
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 1 [Member]
Foreign currency contracts, asset	0	0
Foreign currency contracts, liability	0	0
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 2 [Member]
Foreign currency contracts, asset	0.9	3
Foreign currency contracts, liability	11.4	25.5
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 3 [Member]
Foreign currency contracts, asset	0	0
Foreign currency contracts, liability	$ 0	$ 0

Note 13 - Retirement Benefit _3

Note 13 - Retirement Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension and Other Postretirement Benefits Cost (Reversal of Cost), Total	$ 14,800	$ 12,300	$ 13,700
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 0
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%
Defined Contribution Plan, Minimum Service Period Required to be Eligible (Year)	1 year
Defined Contribution Plan, Cost	$ 8,700	7,200	9,800
Pension Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		13,300
UNITED STATES | Nonqualified Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0	0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	100
UNITED STATES | Retiree Plan [Member]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	700
Foreign Plan [Member] | Pension Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	12,900	$ 13,300	$ 12,200
Foreign Plan [Member] | UK Pension Plan [Member] | Pension Plan [Member]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment				$ 100
Foreign Plan [Member] | German Pension Plan [Member] | Pension Plan [Member] | Maximum [Member]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 100

Note 13 - Retirement Benefit _4

Note 13 - Retirement Benefit Plans - Weighted-average Asset Allocations by Asset Category (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Asset		$ 0
Pension Plan [Member]
Asset			$ 13,300
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Asset			0
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Asset			0
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Asset			13,300
Pension Plan [Member] | Foreign Plan [Member]
Asset		12,900	13,300	$ 12,200
Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Asset		0
Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Asset		0
Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Asset		12,900
Pension Plan [Member] | Investment Account Held by Pension Plan [Member]
Asset	[1]		13,300
Pension Plan [Member] | Investment Account Held by Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Asset	[1]		0
Pension Plan [Member] | Investment Account Held by Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Asset	[1]		0
Pension Plan [Member] | Investment Account Held by Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Asset	[1]		$ 13,300
Pension Plan [Member] | Investment Account Held by Pension Plan [Member] | Foreign Plan [Member]
Asset	[1]	12,900
Pension Plan [Member] | Investment Account Held by Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Asset	[1]	0
Pension Plan [Member] | Investment Account Held by Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Asset	[1]	0
Pension Plan [Member] | Investment Account Held by Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Asset	[1]	$ 12,900
[1]	This category is comprised of investments in insurance contracts.

Note 13 - Retirement Benefit _5

Note 13 - Retirement Benefit Plans - Reconciliation of Level 3 Investments (Details) - Pension Plan [Member] - Foreign Plan [Member] - UK Pension Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair value at beginning of year	$ 13.3	$ 12.2
Purchases, sales, issuances and settlements, net	0.2	0.1
Net (loss) gain	(0.4)	0.6
Foreign currency	(0.2)	0.4
Fair value at end of year	$ 12.9	$ 13.3

Note 13 - Retirement Benefit _6

Note 13 - Retirement Benefit Plans - Weighted-average Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Postretirement Health Coverage [Member]
Discount rate, benefit obligations	2.53%	2.07%
Rate of compensation increase, benefit obligations	0.00%	0.00%
Discount rate, net periodic benefit costs	2.07%	3.06%	3.95%
Expected long-term rate of return on plan assets, net periodic benefit costs	0.00%	0.00%	0.00%
Rate of compensation increase, net periodic benefit costs	0.00%	0.00%	0.00%
UNITED STATES | Pension Plan [Member]
Discount rate, net periodic benefit costs	2.06%	3.01%	3.95%
Expected long-term rate of return on plan assets, net periodic benefit costs	0.00%	0.00%	0.00%
Rate of compensation increase, net periodic benefit costs	0.00%	0.00%	0.00%
UNITED STATES | Nonqualified Plan [Member]
Discount rate, benefit obligations	2.54%	2.06%
Rate of compensation increase, benefit obligations	0.00%	0.00%
Foreign Plan [Member] | Pension Plan [Member]
Discount rate, benefit obligations	1.59%	1.05%
Rate of compensation increase, benefit obligations	0.00%	0.00%
Discount rate, net periodic benefit costs	1.05%	1.42%	1.92%
Expected long-term rate of return on plan assets, net periodic benefit costs	2.70%	3.30%	3.80%
Rate of compensation increase, net periodic benefit costs	0.00%	0.00%	0.00%

Note 13 - Retirement Benefit _7

Note 13 - Retirement Benefit Plans - Accumulated Benefit Obligations (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
UNITED STATES | Nonqualified Plan [Member]
Accumulated benefit obligation	$ 1.1	$ 1.2
Foreign Plan [Member] | Pension Plan [Member] | UK Pension Plan [Member]
Accumulated benefit obligation	11.4	12.2
Foreign Plan [Member] | Pension Plan [Member] | German Pension Plan [Member]
Accumulated benefit obligation	1	1.2
Foreign Plan [Member] | Pension Plan [Member] | Italian Pension Plan [Member]
Accumulated benefit obligation	$ 3.7	$ 4.2

Note 13 - Retirement Benefit _8

Note 13 - Retirement Benefit Plans - Information for Plans With Accumulated Benefit Obligation in Excess of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accumulated benefit obligation	$ 5.8	$ 6.6
Fair value of plan assets	$ 0	$ 0

Note 13 - Retirement Benefit _9

Note 13 - Retirement Benefit Plans - Information for Plans with Projected Benefit Obligation in Excess of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Projected benefit obligation	$ 5.8	$ 6.6
Fair value of plan assets	$ 0	$ 0

Note 13 - Retirement Benefit_10

Note 13 - Retirement Benefit Plans - Assumed Healthcare Trend Rates (Details) - Postretirement Health Coverage [Member]	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.00%	4.50%
Year that the rate reaches the ultimate trend rate	2045	2037
Pre-65 [Member]
Healthcare cost trend rate assumption for the next year	5.40%	5.90%
Post-65 [Member]
Healthcare cost trend rate assumption for the next year	5.90%	6.20%

Note 13 - Retirement Benefit_11

Note 13 - Retirement Benefit Plans - Changes in Benefit Obligations and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair value of plan assets at end of year	$ 0
Pension Plan [Member]
Fair value of plan assets at beginning of year	13,300
Fair value of plan assets at end of year		$ 13,300
Postretirement Health Coverage [Member]
Benefit obligation at beginning of year	7,300	7,800
Service cost	100	100	$ 0
Interest cost	100	200	300
Actuarial loss (gain)	600	(300)
Foreign exchange	0	0
Settlement	0	0
Benefits paid	(1,100)	(500)
Benefit obligation at end of year	7,000	7,300	7,800
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	1,000	500
Foreign exchange	0	0
Settlement	0	0
Benefits paid	(1,000)	(500)
Fair value of plan assets at end of year	0	0	0
Funded status at end of year	(7,000)	(7,300)
Noncurrent other assets	0	0
Current liabilities	(700)	(700)
Long-term liabilities	(6,300)	(6,600)
Net accrued liability	(7,000)	(7,300)
Prior service cost	0	0
Net actuarial (loss) gain	200	800
Accumulated other comprehensive (loss) income	200	800
UNITED STATES | Pension Plan [Member]
Service cost	0	0	0
Interest cost	100	0	100
UNITED STATES | Nonqualified Plan [Member]
Benefit obligation at beginning of year	1,200	1,300
Service cost	0	0
Interest cost	100	0
Actuarial loss (gain)	0	0
Foreign exchange	0	0
Settlement	0	0
Benefits paid	(200)	(100)
Benefit obligation at end of year	1,100	1,200	1,300
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	100	100
Foreign exchange	0	0
Settlement	0	0
Benefits paid	(100)	(100)
Fair value of plan assets at end of year	0	0	0
Funded status at end of year	(1,100)	(1,200)
Noncurrent other assets	0	0
Current liabilities	(100)	(100)
Long-term liabilities	(1,000)	(1,100)
Net accrued liability	(1,100)	(1,200)
Prior service cost	0	0
Net actuarial (loss) gain	(900)	(900)
Accumulated other comprehensive (loss) income	(900)	(900)
Foreign Plan [Member] | Pension Plan [Member]
Benefit obligation at beginning of year	17,600	15,700
Service cost	0	0	0
Interest cost	200	200	300
Actuarial loss (gain)	(600)	1,700
Foreign exchange	(400)	800
Settlement	(300)	0
Benefits paid	(300)	(800)
Benefit obligation at end of year	16,200	17,600	15,700
Fair value of plan assets at beginning of year	13,300	12,200
Actual return on plan assets	(400)	600
Employer contributions	800	900
Foreign exchange	(200)	400
Settlement	(300)	0
Benefits paid	(300)	(800)
Fair value of plan assets at end of year	12,900	13,300	$ 12,200
Funded status at end of year	(3,300)	(4,300)
Noncurrent other assets	1,400	1,100
Current liabilities	(200)	0
Long-term liabilities	(4,500)	(5,400)
Net accrued liability	(3,300)	(4,300)
Prior service cost	(200)	(200)
Net actuarial (loss) gain	(2,100)	(2,000)
Accumulated other comprehensive (loss) income	$ (2,300)	$ (2,200)

Note 13 - Retirement Benefit_12

Note 13 - Retirement Benefit Plans - Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Postretirement Health Coverage [Member]
Service cost	$ 0.1	$ 0.1	$ 0
Interest cost	0.1	0.2	0.3
Expected return on plan assets	0	0	0
Amortization of net actuarial loss (gain)	0	0	(0.1)
Net periodic benefit cost (credit)	0.2	0.3	0.2
UNITED STATES | Pension Plan [Member]
Service cost	0	0	0
Interest cost	0.1	0	0.1
Expected return on plan assets	0	0	0
Amortization of net actuarial loss (gain)	0	0.1	0
Net periodic benefit cost (credit)	0.1	0.1	0.1
Foreign Plan [Member] | Pension Plan [Member]
Service cost	0	0	0
Interest cost	0.2	0.2	0.3
Expected return on plan assets	(0.4)	(0.3)	(0.4)
Amortization of net actuarial loss (gain)	0.1	0	0
Net periodic benefit cost (credit)	$ (0.1)	$ (0.1)	$ (0.1)

Note 13 - Retirement Benefit_13

Note 13 - Retirement Benefit Plans - Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member] | UNITED STATES
Prior service cost	$ 0	$ 0	$ 0
Net actuarial loss (gain)	0	0	(0.1)
Amortization of net actuarial (loss) gain	0	(0.1)	0
Total recognized in other comprehensive (income) loss	0	(0.1)	0.1
Total recognized in net benefit cost (credit) and other comprehensive loss (income)	0.1	0	0.2
Pension Plan [Member] | Foreign Plan [Member]
Prior service cost	0	0.1	0
Net actuarial loss (gain)	(0.2)	(1.6)	(0.4)
Amortization of net actuarial (loss) gain	(0.1)	0	0
Total recognized in other comprehensive (income) loss	0.1	1.7	0.4
Total recognized in net benefit cost (credit) and other comprehensive loss (income)	0	1.6	0.3
Postretirement Health Coverage [Member]
Prior service cost	0	0	0
Net actuarial loss (gain)	(0.6)	0.3	0.1
Amortization of net actuarial (loss) gain	0	0	0.1
Total recognized in other comprehensive (income) loss	0.6	(0.3)	0
Total recognized in net benefit cost (credit) and other comprehensive loss (income)	$ 0.8	$ 0	$ 0.2

Note 13 - Retirement Benefit_14

Note 13 - Retirement Benefit Plans - Benefit Payments Expected to be Paid (Details) $ in Millions	Dec. 31, 2021USD ($)
Postretirement Health Coverage [Member]
2022	$ 0.7
2023	0.7
2024	0.7
2025	0.6
2026	0.6
2027 to 2030	2.5
Total	5.8
UNITED STATES | Nonqualified Plan [Member]
2022	0.1
2023	0.1
2024	0.1
2025	0.1
2026	0.1
2027 to 2030	0.4
Total	0.9
Foreign Plan [Member] | Pension Plan [Member]
2022	0.6
2023	0.6
2024	0.6
2025	0.6
2026	0.6
2027 to 2030	3.5
Total	$ 6.5

Note 14 - Stockholders' Equit_2

Note 14 - Stockholders' Equity (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common Stock, Shares Authorized (in shares)	60,000,000	60,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.375	$ 0.375
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)	1,193,414
Payments for Repurchase of Common Stock	$ 15,000,000	$ 0	$ 0
Stock Repurchased During Period, Shares (in shares)	196,982	0
Stock Repurchased During Period, Average Cost Per Share (in dollars per share)	$ 76.13
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 1,193,414

Note 14 - Stockholders' Equit_3

Note 14 - Stockholders' Equity - Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance	$ 406.1	$ 361.3	$ 316.3
Total other comprehensive (loss) income, net of tax	(17.8)	18.4	(1.3)
Balance	435.1	406.1	361.3
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Balance	(19.1)	(36.3)
Other comprehensive income (loss) before reclassifications	(16.9)	17.2
Amounts reclassified from accumulated other comprehensive loss	0	0
Total other comprehensive (loss) income, net of tax	(16.9)	17.2
Balance	(36)	(19.1)	(36.3)
Accumulated Defined Benefit Plans Adjustment Attributable to Noncontrolling Interest [Member]
Balance	(1.7)	(0.7)
Other comprehensive income (loss) before reclassifications	(0.4)	(1)
Amounts reclassified from accumulated other comprehensive loss	0	0
Total other comprehensive (loss) income, net of tax	(0.4)	(1)
Balance	(2.1)	(1.7)	(0.7)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Balance	0.7	(1.5)
Other comprehensive income (loss) before reclassifications	10.8	(7.5)
Amounts reclassified from accumulated other comprehensive loss	(11.3)	9.7
Total other comprehensive (loss) income, net of tax	(0.5)	2.2
Balance	0.2	0.7	(1.5)
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Balance	(20.1)	(38.5)
Other comprehensive income (loss) before reclassifications	(6.5)	8.7
Amounts reclassified from accumulated other comprehensive loss	(11.3)	9.7
Total other comprehensive (loss) income, net of tax	(17.8)	18.4
Balance	$ (37.9)	$ (20.1)	$ (38.5)

Note 15 - Leases (Details Textu

Note 15 - Leases (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Aggregate Residual Value at Lease Expiration for Vehicle Leases	$ 12.6
Guarantor Obligations, Maximum Exposure, Undiscounted	9.3
Finance Lease, Right-of-Use Asset, Accumulated Amortization	0.1	$ 0.2
Short-term Lease, Cost	4	3.5
Variable Lease, Cost	$ 2.2	$ 1.6

Note 15 - Leases - Lease Assets

Note 15 - Leases - Lease Assets and Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Operating lease assets		$ 41.3	$ 44.5
Total leased assets		41.4	44.6
Long-term operating lease liabilities		25.4	28.7
Total lease liabilities		41.9	45.1
Property, Plant and Equipment [Member]
Finance lease assets	[1]	0.1	0.1
Other Current Liabilities [Member]
Operating leases		16.4	16.3
Current Portion of Long-term Debt [Member]
Finance liabilities, current		0	0.1
Long-term Debt [Member]
Finance liabilities, noncurrent		$ 0.1	$ 0
[1]	Finance lease assets are recorded net of accumulated amortization of less than $0.1 million and $0.2 million as of December 31, 2021 and December 31, 2020, respectively.

Note 15 - Leases - Lease Cost (

Note 15 - Leases - Lease Cost (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2019
Operating lease cost(a)		$ 26.6	[1]	$ 25.1	$ 27.5	[1]
Finance lease cost(b)	[2]	0.1		0.2	0.3
Total lease cost		$ 26.7		$ 25.3	$ 27.8
Operating leases, weighed-average remaining lease term (Year)		3 years		3 years 4 months 24 days
Finance leases, weighed-average remaining lease term (Year)		4 years 2 months 12 days		1 year
Operating leases, weighed-average discount rate		3.50%		3.80%
Finance leases, weighed-average discount rate		2.20%		2.50%
Operating cash flows from operating leases		$ 20.2		$ 19.7
Financing cash flows from finance leases		0.1		0.1
Lease assets obtained in exchange for new finance lease liabilities		0.1		0
Lease assets obtained in exchange for new operating lease liabilities		$ 15.7		$ 14.8
[1]	Includes short-term lease costs of $4.0 million and $3.5 million and variable lease costs of $2.2 million and $1.6 million for the years ended December 31, 2021 and December 31, 2020, respectively.
[2]	Includes amortization of leased assets and interest on lease liabilities.

Note 15 - Leases - Maturity of

Note 15 - Leases - Maturity of Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
2022, operating leases	$ 17.5
2022, finance leases	0
2022	17.5
2023, operating leases	14.1
2023, finance leases	0.1
2023	14.2
2024, operating leases	7.7
2024, finance leases	0
2024	7.7
2025, operating leases	2.9
2025, finance leases	0
2025	2.9
2026, operating leases	1.1
2026, finance leases	0
2026	1.1
Thereafter, operating leases	0.8
Thereafter, finance leases	0
Thereafter	0.8
Total lease payments, operating leases	44.1
Total lease payments, finance leases	0.1
Total lease payments	44.2
Less: Interest, operating leases	(2.3)
Less: Interest, finance leases	0
Less: Interest	(2.3)
Present value of lease liabilities, operating leases	41.8
Present value of lease liabilities, finance leases	0.1	$ 0.1
Present value of lease liabilities	$ 41.9	$ 45.1

Note 17 - Income Taxes (Details

Note 17 - Income Taxes (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Undistributed Earnings of Foreign Subsidiaries	$ 83.9
Deferred Tax Assets, Tax Credit Carryforwards, Total	4.5	$ 3.6
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(2.7)
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	4.5	6.3
Unrecognized Tax Benefits, Ending Balance	4.7	6.4	$ 7.5
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 0.7	$ 0.7
Minimum [Member]
Open Tax Year, Term (Year)	3 years
Maximum [Member]
Open Tax Year, Term (Year)	5 years
Domestic Tax Authority [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Total	$ 3.2
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year	2018 2017 2018 2019 2020 2021
Foreign Tax Authority [Member]
Operating Loss Carryforwards, Total	$ 30.8
Operating Loss Carryforwards, Not subject to Expiration	30.8
Operating Loss Carryforwards, Subject to Expiration	0.1
Foreign Tax Authority [Member] | Tax and Customs Administration, Netherlands [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	$ 1.3

Note 17 - Income Taxes - Income

Note 17 - Income Taxes - Income from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
U.S. operations	$ 47.5	$ 46.6	$ 50.1
Foreign operations	26.6	(5.5)	3.9
Total	$ 74.1	$ 41.1	$ 54

Note 17 - Income Taxes - Inco_2

Note 17 - Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal	$ 11.1	$ 4.2	$ 9.6
Foreign	11.2	3.8	5.6
State	1.9	1.8	2.1
Total current	24.2	9.8	17.3
Federal	0.6	4.4	(2.4)
Foreign	(15.5)	(6.9)	(6.7)
State	(0.1)	0.1	(0.1)
Total deferred	(15)	(2.4)	(9.2)
Federal	11.7	8.6	7.2
Foreign	(4.3)	(3.1)	(1.1)
State	1.8	1.9	2
Total income tax expense	$ 9.2	$ 7.4	$ 8.1

Note 17 - Income Taxes - Effect

Note 17 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Tax at statutory rate	21.00%	21.00%	21.00%
State and local taxes, net of federal benefit	2.20%	3.50%	1.90%
Effect of foreign operations	(6.30%)	(3.70%)	3.50%
Effect of changes in valuation allowances	(4.50%)	0.50%	(9.70%)
Excess tax benefits on share-based compensation	1.80%	2.10%	2.50%
Share-based payments	(0.90%)	(0.90%)	(2.00%)
Research and development credit	(1.40%)	(3.30%)	(1.90%)
Other, net	0.60%	(1.30%)	(0.20%)
Effective income tax rate	12.50%	17.90%	15.10%

Note 17 - Income Taxes - Deferr

Note 17 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Inventory	$ 3.7	$ 4.5
Compensation and employee benefits	14.8	14
Warranty reserves	2.2	2.3
Allowance for doubtful accounts and deferred revenue	2.3	2.3
Operating lease liabilities	8.2	11.2
Tax loss carryforwards	7.7	9.6
Tax credit carryforwards	4.5	3.6
Other	0.7	2.5
Gross deferred tax assets	44.1	50
Less: valuation allowance	(4.8)	(7.5)
Total net deferred tax assets	39.3	42.5
Operating lease assets	8.1	11.2
Fixed assets	13	14
Goodwill and intangible assets	23	41.5
Total deferred tax liabilities	44.1	66.7
Net deferred tax liabilities	$ (4.8)	$ (24.2)

Note 17 - Income Taxes - Unreco

Note 17 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Beginning balance	$ 6.4	$ 7.5
(Decreases) increases as a result of tax positions taken during a prior period	(0.1)
(Decreases) increases as a result of tax positions taken during a prior period		0.3
Increases as a result of tax positions taken during the current year	0.5	0.4
Decreases relating to settlement with tax authorities	0	(0.8)
Decreases as a result of a lapse of the applicable statute of limitations	(2.1)	(1.4)
Increases as a result of foreign currency fluctuations	0	0.4
Ending balance	$ 4.7	$ 6.4

Note 18 - Share-based Compens_3

Note 18 - Share-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement, Expense	$ 9.5	$ 6	$ 11.4
Excess Tax Benefit from Share-based Compensation, Operating Activities	$ 0.7	$ 0.3	$ 1.1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 22.01	$ 18.45	$ 15.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 3.9	$ 3.3	$ 6.8
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	13.8
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 12.7
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)	5 years 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term (Year)	4 years 9 months 18 days
Deferred Compensation Liability, Current and Noncurrent, Total	$ 0.3	0.3
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 1.2
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 4 months 24 days
Share-based Payment Arrangement, Option [Member] | Vesting Yearly [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	33.33%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 1.2
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 1.2	$ 0.7	$ 1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	19,332
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 3.4
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 9 months 18 days
Share Based Compensation Arrangement by Share Based Payment Award, Percentage of Maximum Increase in Number of Shares Participant Receives Based on Achievement of Performance Goals	200.00%
Share Based Compensation Arrangement by Share Based Payment Award, Potential Lowest Number of Shares Participant Receives Based on Achievement of Performance Goals	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	43,621	29,595	0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 3.6
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 3.2	$ 2.6	$ 2.2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	54,752
The 2010 Plan and the 2017 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	1,079,434
The 2020 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	1,546,609

Note 18 - Share-based Compens_4

Note 18 - Share-based Compensation - Valuation Assumptions (Details) - Share-based Payment Arrangement, Option [Member]	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Weighted-average expected volatility	35.00%	27.00%	26.00%
Expected dividend yield		1.30%
Expected term, in years (Year)	5 years	5 years	5 years
Minimum [Member]
Expected volatility	34.00%	27.00%	26.00%
Expected dividend yield	1.30%		1.20%
Risk-free interest rate	0.80%	0.30%	1.60%
Maximum [Member]
Expected volatility	35.00%	32.00%	27.00%
Expected dividend yield	1.40%		1.40%
Risk-free interest rate	0.90%	1.30%	2.50%
Weighted Average [Member]
Expected dividend yield	1.40%	1.30%	1.20%

Note 18 - Share-based Compens_5

Note 18 - Share-based Compensation - Activity for Stock Option Awards (Details)	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Outstanding, shares (in shares) | shares	990,663
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 62.90
Granted (in shares) | shares	73,274
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 79.14
Exercised, shares (in shares) | shares	(147,890)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 51.88
Forfeited (in shares) | shares	(5,912)
Forfeited, weighted average exercise price (in dollars per share) | $ / shares	$ 64.42
Expired, shares (in shares) | shares	(863)
Expired, weighted average exercise price (in dollars per share) | $ / shares	$ 73.72
Outstanding, shares (in shares) | shares	909,272
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 65.98
Exercisable, shares (in shares) | shares	743,371
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 64.03

Note 18 - Share-based Compens_6

Note 18 - Share-based Compensation - Activity for Nonvested Restricted Share Awards (Details) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Nonvested, shares (in shares) | shares	94,043
Nonvested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 55.81
Granted, shares (in shares) | shares	16,863
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 79.34
Vested, shares (in shares) | shares	(19,332)
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 59.81
Forfeited, shares (in shares) | shares	0
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 0
Nonvested, shares (in shares) | shares	91,574
Nonvested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 59.30

Note 18 - Share-based Compens_7

Note 18 - Share-based Compensation - Activity for Nonvested Performance Share Awards (Details) - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Nonvested, shares (in shares)	124,219
Nonvested, weighted-average grant date fair value (in dollars per share)	$ 69.68
Granted, shares (in shares)	57,195
Granted, weighted-average grant date fair value (in dollars per share)	$ 78.39
Vested, shares (in shares)	(43,621)	(29,595)	0
Vested, weighted-average grant date fair value (in dollars per share)	$ 67.88
Forfeited, shares (in shares)	(7,441)
Forfeited, weighted-average grant date fair value (in dollars per share)	$ 72.25
Nonvested, shares (in shares)	130,352	124,219
Nonvested, weighted-average grant date fair value (in dollars per share)	$ 73.96	$ 69.68

Note 18 - Share-based Compens_8

Note 18 - Share-based Compensation - Activity for Nonvested Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Nonvested, shares (in shares) | shares	97,485
Nonvested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 64.95
Granted, shares (in shares) | shares	61,121
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 82.44
Vested, shares (in shares) | shares	(54,752)
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 59.28
Forfeited, shares (in shares) | shares	(12,883)
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 79.44
Nonvested, shares (in shares) | shares	90,971
Nonvested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 78.06

Note 19 - Income Attributable_3

Note 19 - Income Attributable to Tennant Company Per Share (Details Textual) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	171,273	610,118	552,402

Note 19 - Income Attributable_4

Note 19 - Income Attributable to Tennant Company Per Share - Computations of Basic and Diluted Earnings (Loss) Attributable to Tennant Company Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income attributable to Tennant Company	$ 64.9	$ 33.7	$ 45.8
Basic - weighted average shares outstanding (in shares)	18,499,674	18,349,724	18,118,486
Diluted - weighted average shares outstanding (in shares)	18,849,217	18,635,002	18,453,145
Basic earnings per share attributable to Tennant Company (in dollars per share)	$ 3.51	$ 1.84	$ 2.53
Diluted earnings per share attributable to Tennant Company (in dollars per share)	$ 3.44	$ 1.81	$ 2.48

Note 20 - Segment Reporting (De

Note 20 - Segment Reporting (Details Textual)	12 Months Ended
	Dec. 31, 2021
Number of Operating Segments	4
Number of Reportable Segments	1

Note 20 - Segment Reporting - N

Note 20 - Segment Reporting - Net Sales and Long-lived Assets by Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales	$ 1,090.8	$ 1,001	$ 1,137.6
Long-lived assets	477.8	529.6	517.7
UNITED STATES
Net sales	566.4	546.2	609.6
Long-lived assets	106.6	121.9	114.5
Americas, Excluding United States [Member]
Net sales	91.9	84.8	112.8
Long-lived assets	18.8	14.7	12.8
Americas [Member]
Net sales	658.3	631	722.4
Long-lived assets	125.4	136.6	127.3
EMEA [Member]
Net sales	331.9	278.2	307.6
Long-lived assets	316.6	355.5	353.8
ITALY
Long-lived assets	280.4	321.5	325.2
Asia Pacific [Member]
Net sales	100.6	91.8	107.6
Long-lived assets	35.8	37.5	36.6
Other Europe, Middle East and Africa [Member]
Long-lived assets	$ 36.2	$ 34	$ 28.6

Schedule II - Valuation and Q_3

Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance at beginning of year		$ 4.6	$ 3.6	$ 2.5
Charged to costs and expenses		1.5	2.2	2.5
Reclassification(a)	[1]	0	0	0.5
Charged to other accounts(b)	[2]	0.3	0	0
Deductions(c)	[3]	(1.1)	(1.2)	(1.9)
Balance at end of year		5.3	4.6	3.6
Sales Returns and Allowances [Member]
Balance at beginning of year		1	1.2	1.3
Charged to costs and expenses		0.1	0.2	0.1
Deductions(c)	[3]	(0.1)	(0.4)	(0.2)
Balance at end of year		1	1	1.2
SEC Schedule, 12-09, Reserve, Inventory [Member]
Balance at beginning of year		13.6	9.8	5.6
Charged to costs and expenses		1.7	4.4	4.6
Charged to other accounts(b)	[2]	(0.3)	0.2	0
Deductions(c)	[4]	(0.7)	(0.8)	(0.4)
Balance at end of year		14.3	13.6	9.8
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Balance at beginning of year		7.5	6.2	11.5
Charged to costs and expenses		(2.6)	0.9	(5.2)
Charged to other accounts(b)	[2]	(0.1)	0.4	(0.1)
Balance at end of year		4.8	7.5	6.2
SEC Schedule, 12-09, Reserve, Warranty [Member]
Balance at beginning of year		11.1	12.7	13.1
Charged to costs and expenses		8.5	11.9	11.1
Charged to other accounts(b)	[2]	(0.2)	0.1	0
Deductions(c)	[5]	(9)	(13.6)	(11.5)
Balance at end of year		$ 10.4	$ 11.1	$ 12.7
[1]	Includes amount reclassified between allowance for doubtful accounts and other receivables related to a customer's open receivables balance for proper classification and acquisition-related adjustments.
[2]	Primarily includes impact from foreign currency fluctuations.
[3]	Includes accounts determined to be uncollectible and charged against reserves, net of collections on accounts previously charged against reserves.
[4]	Includes inventory identified as excess, slow moving or obsolete and charged against reserves.
[5]	Includes warranty claims charged against reserves.