Tennant (TNC) 10-Q 1 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2018	Apr. 16, 2018
Entity Information
Entity Registrant Name	Tennant Company
Entity Central Index Key	97,134
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		17,981,867
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Amendment Flag	false

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Sales	$ 272,847	$ 191,059
Cost of Sales	162,210	111,323
Gross Profit	110,637	79,736
Operating Expense:
Research and Development Expense	7,996	8,446
Selling and Administrative Expense	92,269	73,956
Total Operating Expense	100,265	82,402
Profit (Loss) from Operations	10,372	(2,666)
Other Income (Expense):
Interest Income	749	84
Interest Expense	(5,745)	(794)
Net Foreign Currency Transaction Losses	(749)	(1,197)
Other (Expense) Income, Net	(250)	32
Total Other Expense, Net	(5,995)	(1,875)
Profit (Loss) Before Income Taxes	4,377	(4,541)
Income Tax Expense (Benefit)	1,077	(584)
Net Earnings (Loss) Including Noncontrolling Interest	3,300	(3,957)
Net Earnings Attributable to Noncontrolling Interest	26	0
Net Earnings (Loss) Attributable to Tennant Company	$ 3,274	$ (3,957)
Net Earnings (Loss) Attributable to Tennant Company per Share:
Basic	$ 0.18	$ (0.22)
Diluted	$ 0.18	$ (0.22)
Weighted Average Shares Outstanding:
Basic	17,790,989	17,596,546
Diluted	18,245,359	17,596,546
Cash Dividend Declared per Common Share	$ 0.21	$ 0.21

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Earnings (Loss) Including Noncontrolling Interest	$ 3,300	$ (3,957)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	8,381	2,400
Pension and retiree medical benefits	82	10
Cash flow hedge	(2,715)	(73)
Income Taxes:
Foreign currency translation adjustments	(17)	0
Pension and retiree medical benefits	(151)	(18)
Cash flow hedge	(501)	27
Total Other Comprehensive Income, net of tax	5,079	2,346
Total Comprehensive Income (Loss) Including Noncontrolling Interest	8,379	(1,611)
Comprehensive Income Attributable to Noncontrolling Interest	26	0
Comprehensive Income (Loss) Attributable to Tennant Company	$ 8,353	$ (1,611)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 54,001	$ 58,398
Restricted Cash	645	653
Accounts Receivable, less allowances of $2,706 and $3,241, respectively	212,265	209,516
Inventories	140,290	127,694
Prepaid Expenses	21,537	19,351
Other Current Assets	5,942	7,503
Total Current Assets	434,680	423,115
Property, Plant and Equipment	387,130	382,768
Accumulated Depreciation	(209,204)	(202,750)
Property, Plant and Equipment, Net	177,926	180,018
Deferred Income Taxes	14,832	11,134
Goodwill	196,165	186,044
Intangible Assets, Net	172,297	172,347
Other Assets	20,002	21,319
Total Assets	1,015,902	993,977
Current Liabilities:
Current Portion of Long-Term Debt	30,902	30,883
Accounts Payable	102,702	96,082
Employee Compensation and Benefits	34,674	37,257
Income Taxes Payable	2,800	2,838
Other Current Liabilities	70,293	69,447
Total Current Liabilities	241,371	236,507
Long-Term Liabilities:
Long-Term Debt	342,420	345,956
Employee-Related Benefits	23,394	23,867
Deferred Income Taxes	53,412	53,225
Other Liabilities	47,934	35,948
Total Long-Term Liabilities	467,160	458,996
Total Liabilities	708,531	695,503
Commitments and Contingencies (Note 13)
Equity:
Common Stock, $0.375 par value; 60,000,000 shares authorized; 17,910,440 and 17,881,177 shares issued and outstanding, respectively	6,717	6,705
Additional Paid-In Capital	18,295	15,089
Retained Earnings	297,717	297,032
Accumulated Other Comprehensive Loss	(17,244)	(22,323)
Total Tennant Company Shareholders' Equity	305,485	296,503
Noncontrolling Interest	1,886	1,971
Total Equity	307,371	298,474
Total Liabilities and Total Equity	$ 1,015,902	$ 993,977

Condensed Consolidated Balance5

Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Allowance For Doubtful Receivables And Sales Returns	$ 2,706	$ 3,241
Equity:
Common Stock, par value per share	$ 0.375	$ 0.375
Common Stock, shares authorized	60,000,000	60,000,000
Common Stock, shares issued	17,910,440	17,881,177
Common Stock, shares outstanding	17,910,440	17,881,177

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES
Net Earnings (Loss) Including Noncontrolling Interest	$ 3,300	$ (3,957)
Adjustments to reconcile Net Earnings (Loss) to Net Cash Provided by (Used in) Operating Activities:
Depreciation	7,708	4,493
Amortization of Intangible Assets	5,838	244
Amortization of Debt Issuance Costs	501	0
Deferred Income Taxes	(3,151)	(2,650)
Share-Based Compensation Expense	2,748	2,573
Allowance for Doubtful Accounts and Returns	723	251
Other, Net	137	18
Changes in Operating Assets and Liabilities, Net of Assets Acquired:
Receivables, Net	(359)	12,419
Inventories	(10,787)	(8,631)
Accounts Payable	5,734	1,882
Employee Compensation and Benefits	(3,403)	(13,630)
Other Current Liabilities	(1,810)	1,699
Income Taxes	(217)	(1,513)
Other Assets and Liabilities	(1,423)	(4,307)
Net Cash Provided by (Used in) Operating Activities	5,539	(11,109)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(3,480)	(4,673)
Proceeds from Disposals of Property, Plant and Equipment	16	53
Proceeds from Principal Payments Received on Long-Term Note Receivable	167	0
Issuance of Long-Term Note Receivable	0	1,500
Acquisition of Businesses, Net of Cash Acquired	0	(304)
Purchase of Intangible Assets	(1,000)	(2,500)
Net Cash Used in Investing Activities	(4,297)	(8,924)
FINANCING ACTIVITIES
Proceeds from Issuance of Long-term Debt	0	20,000
Payments of Long-term Debt	(4,037)	(11,151)
Change in Capital Lease Obligations	81	0
Proceeds from Issuance of Common Stock	794	1,655
Dividends Paid	(3,758)	(3,722)
Net Cash (Used in) Provided by Financing Activities	(6,920)	6,782
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	1,273	330
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(4,405)	(12,921)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	59,051	58,550
Cash, Cash Equivalents and Restricted Cash at End of Period	54,646	45,629
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Income Taxes	1,659	3,289
Cash Paid for Interest	1,023	758
Supplemental Non-cash Investing and Financing Activities:
Capital Expenditures in Accounts Payable	$ 1,328	$ 1,582

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. Summary of Significant Accounting Policies Basis of Presentation – The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with the Securities and Exchange Commission (“SEC”) requirements for interim reporting, which allows certain footnotes and other financial information normally required by accounting principles generally accepted in the United States of America to be condensed or omitted. In our opinion, the Condensed Consolidated Financial Statements contain all adjustments (consisting of only normal recurring adjustments) necessary for the fair presentation of our financial position and results of operations. These statements should be read in conjunction with the Consolidated Financial Statements and Notes included in our annual report on Form 10-K for the year ended December 31, 2017 . The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year. Revenue Recognition – 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. Further details regarding revenue recognition are discussed in Notes 2 and 3. New Accounting Pronouncements – Further details regarding the adoption of new accounting standards are discussed in Note 2. We documented the summary of significant accounting policies in the Notes to the Consolidated Financial Statements of our annual report on Form 10-K for the fiscal year ended December 31, 2017 . Other than the accounting policies noted above, there have been no material changes to our accounting policies since the filing of that report.

Newly Adopted Accounting Pronou

Newly Adopted Accounting Pronouncements (Notes)	3 Months Ended
	Mar. 31, 2018
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	2. Newly Adopted Accounting Pronouncements Revenue from Contracts with Customers On January 1, 2018 we adopted Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606) and all the related amendments (“new revenue standard”) to all contracts not completed at the date of initial application using the modified retrospective method. The cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings is not material to the company. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods, and there are no material differences between the reported results under the new revenue standard and those that would have been reported under legacy US GAAP. The new revenue standard also required us to record a refund liability and a corresponding asset for our right to recover products from customers upon settling the refund liability to account for the transfer of products with a right of return. The impact of this provision of the new revenue standard is immaterial to our financial statements. The new revenue standard also provided additional clarity that resulted in a reclassification from Accounts Receivable to Other Current Liabilities to reflect a change in the presentation of our sales return reserves on the balance sheet, which were previously recorded net of Accounts Receivable. Provisions for estimated sales returns will continue to be recorded at the time the related revenue is recognized. The reclassification from Accounts Receivable to Other Current Liabilities in accordance with the detail described above impacted the Condensed Consolidated Balance Sheet as of March 31, 2018 , as follows (in thousands): As Reported Balances Without Adoption of ASC 606 Effect of Change Higher/(Lower) ASSETS Accounts Receivable $ 212,265 $ 211,204 $ 1,061 Total Current Assets 434,680 433,619 1,061 Total Assets $ 1,015,902 $ 1,014,841 $ 1,061 LIABILITIES Other Current Liabilities $ 70,293 $ 69,232 $ 1,061 Total Current Liabilities 241,371 240,310 1,061 Total Liabilities $ 708,531 $ 707,470 $ 1,061 For additional disclosures regarding the new revenue standard, see Note 3. Intra-Entity Transfers of Assets Other than Inventory On January 1, 2018, we adopted ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other than Inventory . The ASU requires the tax effects of all intra-entity sales of assets other than inventory to be recognized in the period in which the transaction occurs. The adoption of this ASU resulted in a $94 cumulative effect adjustment recorded in Retained Earnings as of the beginning of 2018 that reflects a $1,281 reduction in a long-term deferred charge, mostly offset by the establishment of a deferred tax asset of $1,187 . The reduction in the long-term asset and establishment of the deferred tax asset impacted Other Assets and Deferred Income Taxes, respectively, on our Condensed Consolidated Balance Sheets. Statement of Cash Flows – Restricted Cash On January 1, 2018, we adopted ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash . The ASU requires companies to explain the changes in the combined total of restricted and unrestricted balances in the Condensed Consolidated Statements of cash flows. Therefore, amounts generally described as restricted cash or restricted cash equivalents should be combined with unrestricted cash and cash equivalents when reconciling the beginning and end of period balances on the Condensed Consolidated Statements of Cash Flows. In accordance with the ASU, we adopted the standard on a retrospective basis to all periods presented. The following table provides a reconciliation of Cash and Cash Equivalents and Restricted Cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same amounts shown in the Condensed Consolidated Statements of Cash Flows (in thousands): March 31, 2018 Cash and Cash Equivalents $ 54,001 Restricted Cash 645 Total Cash, Cash Equivalents and Restricted Cash at end of period shown in the Condensed Consolidated Statements of Cash Flows $ 54,646 Compensation – Retirement Benefits On January 1, 2018, we adopted ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost . The ASU requires employers to report the service cost component of net periodic pension and postretirement benefit costs in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net periodic pension and postretirement benefit costs are required to be presented in the income statement separately from the service cost component in nonoperating expenses. In accordance with the ASU, we adopted the standard on a retrospective basis to all periods presented. As a result, we reclassified $53 of net benefit credits from Selling and Administrative Expense to Other (Expense) Income, Net on the Condensed Consolidated Statement of Operations for the three months ended March 31, 2017 . The reclassification represents the other components of net periodic pension and postretirement benefit costs that are now presented in the Condensed Consolidated Statements of Operations separately from the service cost in Total Other Expense, Net. As a basis for the retrospective application of the ASU, we used the practical expedient that permits us to use the amounts disclosed for the various components of net benefit cost (credit) in Note 12. Income Statement—Reporting Comprehensive Income On January 1, 2018, we elected to adopt early ASU No. 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220) . The ASU gives companies the option to reclassify stranded tax effects caused by the newly-enacted legislation referred to as the Tax Cuts and Jobs Act (the "Tax Act") from accumulated other comprehensive income to retained earnings. The adoption resulted in a $1,263 cumulative effect adjustment which increased Retained Earnings as of the beginning of 2018 and reduced the deferred income tax benefits in Accumulated Other Comprehensive Loss relating to cash flow hedges and pension and retiree medical benefits. Income Taxes In March 2018, we adopted ASU No. 2018-05, Income Taxes (Topic 740): Amendments to SEC paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118. The ASU updates the income tax accounting in U.S. GAAP to reflect the SEC interpretive guidance released on December 22, 2017, when the Tax Act was signed into law. Additional information regarding the adoption of this standard is contained in Note 15.

Revenue from Contracts with Cus

Revenue from Contracts with Customers (Notes)	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customer	3. Revenue from Contracts with Customers Under the new revenue standard, revenue is recognized when control transfers under the terms of the contract with our customers. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. We do not account for shipping and handling as a distinct performance obligation as we generally perform shipping and handling activities after we transfer control of goods to the customer. Incidental items that are immaterial in the context of the contract are not recognized as a separate performance obligation. We do not have any significantly extended payment terms as payment is generally received within one year of the point of sale. 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 towards completion for certain prepaid service contracts, as this method appropriately depicts performance towards 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. 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 three months ended March 31, 2018 and 2017 (in thousands): Net Sales by geographic area Three Months Ended March 31 2018 2017 Americas $ 162,638 $ 142,770 Europe, Middle East and Africa 88,816 33,276 Asia Pacific 21,393 15,013 Total $ 272,847 $ 191,059 Net Sales are attributed to each geographic area based on the country from which the product was shipped and are net of intercompany sales. Net Sales by groups of similar products and services Three Months Ended March 31 2018 2017 Equipment $ 172,074 $ 113,341 Parts and Consumables 57,441 42,803 Specialty Surface Coatings 6,455 6,681 Service and Other 36,877 28,234 Total $ 272,847 $ 191,059 Net Sales by sales channel Three Months Ended March 31 2018 2017 Sales Direct to Consumer $ 178,710 $ 143,623 Sales to Distributors 94,137 47,436 Total $ 272,847 $ 191,059 Contract Liabilities Sales Returns The right of return may exist explicitly or implicitly with our customers. When the right of return exists, we adjust the transaction price for the estimated effect of returns. We estimate the expected returns using the expected value method by assessing historical sales levels and the timing and magnitude of historical sales return levels as a percent of sales, and projecting this experience into the future. Sales Incentives Our sales contracts may contain various customer incentives, such as volume-based rebates or other promotions. We reduce the transaction price for certain customer programs and incentive offerings that represent variable consideration. Sales incentives given to our customers are recorded using the most likely amount approach for estimating the amount of consideration to which the company will be entitled. We forecast the most likely amount of the incentive to be paid at the time of sale, update this forecast quarterly, and adjust the transaction price accordingly to reflect the new amount of incentives expected to be earned by the customer. A majority of our customer incentives are settled within one year. At March 31, 2018 and December 31, 2017, we reported $7,925 and $13,466 , respectively, of volume-based rebates and other promotions in Other Current Liabilities on our Condensed Consolidated Balance Sheets. The change in the balance was primarily due to payments of rebates during the three months ended March 31, 2018 . Prepaid Service Contracts We sell separately priced prepaid service contracts on our machines ranging from 12 months to 60 months . We receive payment at the inception of the contract and defer recognition of the consideration received because we have to satisfy future performance obligations. In circumstances where prepaid service contracts are bundled with machines, we use an observable price to determine stand-alone selling price for separate performance obligations. At December 31, 2017, $4,468 and $2,483 of unearned revenue associated with outstanding prepaid service contracts was reported in Other Current Liabilities and Other Liabilities, respectively, on our Condensed Consolidated Balance Sheets. During the three months ended March 31, 2018 , we recognized $3,295 of revenue related to the satisfaction of performance obligations under the terms of these prepaid service contracts and deferred an additional $3,660 in additional prepayments representing our obligation to satisfy future performance obligations. At March 31, 2018, $4,732 and $2,669 of unearned revenue associated with outstanding prepaid service contracts was reported in Other Current Liabilities and Other Liabilities, respectively, on our Condensed Consolidated Balance Sheet. Of this, we expect to recognize the following approximate amounts in Net Sales in the following periods: Remaining 2018 $ 3,799 2019 1,835 2020 1,115 2021 416 2022 230 Thereafter 6 Total $ 7,401 Practical Expedients and Exemptions We generally expense the incremental costs of obtaining a contract when incurred because the amortization period would be less than one year. These costs relate primarily to sales commissions and are recorded in Selling and Administrative Expense in the Condensed Consolidated Statements of Operations. We do not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less. In addition, we do not adjust the promised amount of consideration for the effects of a significant financing component if we expect, at contract inception, that the period between when we transfer a promised good or service to a customer, and when the customer pays for that good or service will be one year or less.

Management Actions

Management Actions	3 Months Ended
	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Management Actions	4. Management Actions During the first quarter of 2017 , we implemented a restructuring action to better align our global resources and expense structure with a lower growth global economic environment. The pre-tax charge of $8,018 , including other associated costs of $961 , consisted primarily of severance and was included within Selling and Administrative Expense in the Condensed Consolidated Statements of Operations. The charge impacted our Americas, Europe, Middle East and Africa (EMEA) and Asia Pacific (APAC) operating segments. The savings offset the pre-tax charge approximately one year from the date of the action. Additional costs will not be incurred related to this restructuring action. During the fourth quarter of 2017 , we implemented a restructuring action primarily driven by integration actions related to our acquisition of the IPC Group. The restructuring action consisted primarily of severance and included reductions in overall staffing to streamline and right-size the organization to support anticipated business requirements. The pre-tax charge of $2,501 was included within Selling and Administrative Expense in the Condensed Consolidated Statements of Operations. The charge impacted our Americas, EMEA and APAC operating segments. We believe the anticipated savings will offset the pre-tax charge in approximately one year from the date of the action. We do not expect additional costs will be incurred related to this restructuring action. A reconciliation of the beginning and ending liability balances is as follows: Severance and Related Costs 2017 restructuring actions $ 9,558 Cash payments (6,312 ) Foreign currency adjustments 190 December 31, 2017 balance $ 3,436 2018 utilization: Cash payments (714 ) Foreign currency adjustments 104 March 31, 2018 balance $ 2,826

Acquisition (Notes)

Acquisition (Notes)	3 Months Ended
	Mar. 31, 2018
Business Combinations [Abstract]
Acquisitions	5. Acquisition On April 6, 2017, we acquired the outstanding capital stock of IP Cleaning S.p.A. and its subsidiaries ("IPC Group") for a purchase price of $353,769 , net of cash acquired of $8,804 . The primary seller was Ambienta SGR S.p.A., a European private equity fund. IPC Group, based in Italy, is a designer and manufacturer of innovative professional cleaning equipment, cleaning tools and supplies. The acquisition strengthens our presence and market share in Europe and allows us to better leverage our EMEA cost structure. We funded the acquisition of IPC Group, along with related fees, including refinancing of existing debt, with funds raised through borrowings under a senior secured credit facility in an aggregate principal amount of $420,000 . Further details regarding our acquisition financing arrangements are discussed in Note 8. The following table summarizes the final fair value measurement of the assets acquired and liabilities assumed as of the date of acquisition: ASSETS Receivables $ 39,984 Inventories 46,442 Other Current Assets 7,456 Assets Held for Sale 2,247 Property, Plant and Equipment 63,890 Intangible Assets Subject to Amortization: Trade Name 26,753 Customer Lists 123,061 Technology 9,631 Other Assets 2,000 Total Identifiable Assets Acquired 321,464 LIABILITIES Accounts Payable 32,227 Accrued Expenses 18,130 Deferred Income Taxes 56,950 Other Liabilities 10,964 Total Identifiable Liabilities Assumed 118,271 Net Identifiable Assets Acquired 203,193 Noncontrolling Interest (1,896 ) Goodwill 152,472 Total Purchase Price, net of Cash Acquired $ 353,769 Based on the final fair value measurement of the assets acquired and liabilities assumed, we allocated $152,472 to goodwill for the expected synergies from combining IPC Group with our existing business. None of the goodwill is expected to be deductible for income tax purposes. In connection with the finalization of the fair value measurements, we recorded a measurement period adjustment, which increased goodwill by $4,627 with offsetting adjustments to various income tax assets and liabilities. The final fair value of the acquired intangible assets is $159,445 . The expected lives of the acquired amortizable intangible assets are approximately 15 years for customer lists, 10 years for trade names and 10 years for technology. Trade names are being amortized on a straight-line basis while the customer lists and technology are being amortized on an accelerated basis. We recorded amortization expense of $5,537 in Selling and Administrative Expense on our Condensed Consolidated Statements of Operations for these acquired intangible assets for the three months ended March 31, 2018 . The following unaudited pro forma financial information presents the combined results of operations of Tennant Company as if the 2017 acquisition of the IPC Group had occurred as of January 1, 2016. The unaudited pro forma financial information is presented for informational purposes only. It is not necessarily indicative of what our consolidated results of operations actually would have been had the acquisition occurred at the beginning of fiscal 2016. No pro forma results are presented for the three months ended March 31, 2018 as the results of the acquired company are included in the actual three month results. Pro Forma Financial Information (Unaudited) Three Months Ended (In thousands, except per share data) March 31 2017 Net Sales Pro forma $ 245,120 As reported 191,059 Net Loss Attributable to Tennant Company Pro forma $ (2,426 ) As reported (3,957 ) Net Loss Attributable to Tennant Company per Share Pro forma $ (0.14 ) As reported (0.22 ) The unaudited pro forma financial information above gives effect to the following: • incremental depreciation and amortization expense related to the fair value of the property, plant and equipment and identified intangible assets; • exclusion of the purchase accounting impact of the inventory step-up related to the sale of acquired inventory; • incremental interest expense related to additional debt used to finance the acquisition; • exclusion of non-recurring acquisition-related transaction and financing costs; and • pro forma adjustments tax affected based on the jurisdiction where the costs were incurred.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	6. Inventories Inventories are valued at the lower of cost or market. Inventories at March 31, 2018 and December 31, 2017 consisted of the following: March 31, December 31, Inventories carried at LIFO: Finished goods $ 47,131 $ 43,439 Raw materials, production parts and work-in-process 26,375 23,694 LIFO reserve (28,788 ) (28,429 ) Total LIFO inventories 44,718 38,704 Inventories carried at FIFO: Finished goods 55,747 54,161 Raw materials, production parts and work-in-process 39,825 34,829 Total FIFO inventories 95,572 88,990 Total inventories $ 140,290 $ 127,694 The LIFO reserve approximates the difference between LIFO carrying cost and FIFO.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	7. Goodwill and Intangible Assets The changes in the carrying value of Goodwill for the three months ended March 31, 2018 were as follows: Goodwill Accumulated Impairment Losses Total Balance as of December 31, 2017 $ 227,224 $ (41,180 ) $ 186,044 Purchase accounting adjustments 4,627 — 4,627 Foreign currency fluctuations 7,047 (1,553 ) 5,494 Balance as of March 31, 2018 $ 238,898 $ (42,733 ) $ 196,165 The balances of acquired Intangible Assets, excluding Goodwill, as of March 31, 2018 and December 31, 2017 , were as follows: Customer Lists Trade Names Technology Total Balance as of March 31, 2018 Original cost $ 154,096 $ 32,818 $ 15,894 $ 202,808 Accumulated amortization (23,303 ) (3,293 ) (3,915 ) (30,511 ) Carrying value $ 130,793 $ 29,525 $ 11,979 $ 172,297 Weighted average original life (in years) 15 10 11 Balance as of December 31, 2017 Original cost $ 149,355 $ 31,968 $ 14,589 $ 195,912 Accumulated amortization (17,870 ) (2,436 ) (3,259 ) (23,565 ) Carrying value $ 131,485 $ 29,532 $ 11,330 $ 172,347 Weighted average original life (in years) 15 10 11 The purchase accounting adjustments during the first three months of 2018 were based on the fair value adjustments related to our acquisition of the IPC Group, as described further in Note 5. During the first three months of 2018 , we purchased a technology license for $1,000 . The license was recorded in Intangible Assets, Net as technology on the Condensed Consolidated Balance Sheets as of March 31, 2018 . Amortization expense on Intangible Assets for the three months ended March 31, 2018 and 2017 was $5,838 and $244 , respectively. Estimated aggregate amortization expense based on the current carrying value of amortizable Intangible Assets for each of the five succeeding years and thereafter is as follows: Remaining 2018 $ 17,115 2019 22,388 2020 20,853 2021 19,170 2022 16,928 Thereafter 75,843 Total $ 172,297

Debt

Debt	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Debt	8. Debt Financial Covenants In 2017, the Company and certain of our foreign subsidiaries entered into a Credit Agreement (the "2017 Credit Agreement) with JPMorgan, as administrative agent, Goldman Sachs Bank USA, as syndication agent, Wells Fargo, National Association, U.S. Bank National Association, and HSBC Bank USA, National Association, as co-documentation agents, and the lenders (including JPMorgan) from time to time party thereto. The 2017 Credit Agreement contains customary representations, warranties and covenants, including, but not limited to, covenants restricting the company’s ability to incur indebtedness and liens and merge or consolidate with another entity. The 2017 Credit Agreement also contains financial covenants, requiring us to maintain a ratio of consolidated total indebtedness to consolidated earnings before income, taxes, depreciation and amortization, subject to certain adjustments ("Adjusted EBITDA") of not greater than 4.00 to 1, as well as requiring us to maintain a ratio of consolidated Adjusted EBITDA to consolidated interest expense of no less than 3.50 to 1 for the quarter ended March 31, 2018. The 2017 Credit Agreement also contains a financial covenant requiring us to maintain a senior secured net indebtedness to Adjusted EBITDA ratio of not greater than 3.50 to 1. These financial covenants may restrict our ability to pay dividends and purchase outstanding shares of our common stock. We were in compliance with our financial covenants at March 31, 2018. We will be required to repay the senior credit agreement with 25% to 50% of our excess cash flow from the preceding fiscal year, as defined in the agreement, unless our net leverage ratio for such preceding fiscal year is less than or equal to 3.00 to 1, which will be first measured using our fiscal year ended December 31, 2018. Our Senior Notes also contain certain restrictions, which are generally less restrictive than those contained in the 2017 Credit Agreement. Registration Rights Agreement In connection with the issuance and sale of the Senior Notes, the company entered into a Registration Rights Agreement, dated April 18, 2017, among the company, the Guarantors and Goldman, Sachs & Co. and J.P. Morgan Securities LLC (the “Registration Rights Agreement”). Pursuant to the Registration Rights Agreement, the company agreed (1) to use its commercially reasonable efforts to consummate an exchange offer to exchange the Senior Notes for new registered notes (the “Exchange Notes”), with terms substantially identical in all material respects with the Senior Notes (except that the Exchange Notes will not contain terms with respect to additional interest, registration rights or transfer restrictions) and (2) if required, to have a shelf registration statement declared effective with respect to resales of the Senior Notes. On January 22, 2018, we commenced the exchange offer required by the Registration Rights Agreement. The exchange offer closed on February 23, 2018. We will not incur any additional indebtedness as a result of the exchange offer. As a result, we are not required to pay additional interest on the Senior Notes. Debt Outstanding Debt outstanding at March 31 consisted of the following: March 31, December 31, Long-Term Debt: Senior unsecured notes $ 300,000 $ 300,000 Credit facility borrowings 76,000 80,000 Capital lease obligations 3,416 3,279 Total Long-Term Debt 379,416 383,279 Less: unamortized debt issuance costs (6,094 ) (6,440 ) Less: current maturities of credit facility borrowings, net of debt issuance costs (1) (29,460 ) (29,413 ) Less: current maturities of capital lease obligations (1) (1,442 ) (1,470 ) Long-term portion $ 342,420 $ 345,956 (1) Current maturities of long-term debt include $30,000 of current maturities, less $540 of unamortized debt issuance costs, under our 2017 Credit Agreement and $1,442 of current maturities of capital lease obligations. As of March 31, 2018, we had outstanding borrowings under our Senior Unsecured Notes of $300,000 . We had outstanding borrowings under our 2017 Credit Agreement, totaling $56,000 under our term loan facility and $20,000 under our revolving facility, leaving $180,000 of unused borrowing capacity on our revolving facility. Although we are only required to make a minimum principal payment of $5,000 during the next year, we have both the intent and the ability to pay an additional $25,000 during the next year on our term loan facility. As such, we have classified $30,000 as current maturities of long-term debt. In addition, we had letters of credit and bank guarantees outstanding in the amount of $4,923 , leaving approximately $175,077 of unused borrowing capacity on our revolving facility. Commitment fees on unused lines of credit for the three months ended March 31, 2018 were $150 . The overall weighted average cost of debt is approximately 5.2% and, net of a related cross-currency swap instrument, is approximately 4.3% . Further details regarding the cross-currency swap instrument are discussed in Note 10.

Warranty

Warranty	3 Months Ended
	Mar. 31, 2018
Product Warranties Disclosures [Abstract]
Warranty	9. Warranty We record a liability for warranty claims at the time of sale. The amount of the liability is based on the trend in the historical ratio of claims to sales, the historical length of time between the sale and resulting warranty claim, new product introductions and other factors. Warranty terms on machines generally range from one to four years. However, the majority of our claims are paid out within the first six to nine months following a sale. The majority of the liability for estimated warranty claims represents amounts to be paid out in the near term for qualified warranty issues, with immaterial amounts reserved to be paid for older equipment warranty issues. The changes in warranty reserves for the three months ended March 31, 2018 and 2017 were as follows: Three Months Ended March 31 2018 2017 Beginning balance $ 12,676 $ 10,960 Additions charged to expense 3,334 2,072 Foreign currency fluctuations 86 50 Claims paid (3,288 ) (2,800 ) Ending balance $ 12,808 $ 10,282

Derivatives (Notes)

Derivatives (Notes)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	10. Derivatives Hedge Accounting and Hedging Programs We recognize all derivative instruments as either assets or liabilities in our Condensed 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. Balance Sheet Hedging Hedges of Foreign Currency Assets and Liabilities We hedge portions of 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. At March 31, 2018 and December 31, 2017 , the notional amounts of foreign currency forward exchange contracts outstanding not designated as hedging instruments were $56,269 and $60,858 , respectively. 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 use foreign exchange option contracts or forward contracts to hedge certain cash flow exposures resulting from changes in these foreign currency exchange rates. These foreign exchange contracts, carried at fair value, have maturities of up to one year . We enter into these foreign exchange contracts to hedge a portion of our forecasted foreign currency denominated revenue in the normal course of business, and accordingly, they are not speculative in nature. The notional amounts of outstanding foreign currency forward contracts designated as cash flow hedges were $3,071 and $2,928 as of March 31, 2018 and December 31, 2017 , respectively. The notional amounts of outstanding foreign currency option contracts designated as cash flow hedges were $8,410 and $8,619 as of March 31, 2018 and December 31, 2017 , respectively. 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 Tennant 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 speculative in nature. These cross currency swaps are designated as cash flow hedges. The hedged cash flows as of March 31, 2018 and December 31, 2017 included €179,400 and €181,200 of total notional values, respectively. As of March 31, 2018 the aggregate scheduled interest payments over the course of the loan and related swaps amounted to €29,400 . The scheduled maturity and principal payment of the loan and related swaps of €150,000 are due in April 2022. The fair value of derivative instruments on our Condensed Consolidated Balance Sheets as of March 31, 2018 and December 31, 2017 were as follows: March 31, 2018 December 31, 2017 Fair Value Asset Derivatives Fair Value Liability Derivatives Fair Value Asset Derivatives Fair Value Liability Derivatives Derivatives designated as hedging instruments: Foreign currency option contracts (1) $ 160 $ — $ 86 $ — Foreign currency forward contracts (1) 5,590 41,224 7,218 34,961 Derivatives not designated as hedging instruments: Foreign currency forward contracts (1) $ 515 $ 1,364 $ 442 $ 425 (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 Condensed 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 Condensed Consolidated Balance Sheets. Amounts included in our Condensed Consolidated Balance Sheets are recorded net where a right of offset exists with the same derivative counterparty. As of March 31, 2018 , we anticipate reclassifying approximately $1,716 of losses from Accumulated Other Comprehensive Loss to net earnings during the next 12 months. The effect of foreign currency derivative instruments designated as cash flow hedges and of foreign currency derivative instruments not designated as hedges in our Condensed Consolidated Statements of Operations for the three months ended March 31, 2018 was as follows: Three Months Ended March 31, 2018 Foreign Currency Option Contracts Foreign Currency Forward Contracts Derivatives in cash flow hedging relationships: Net gain (loss) recognized in Other Comprehensive Income (Loss), net of tax (1) $ 16 $ (5,697 ) Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Sales (41 ) (14 ) Net gain reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Interest Income — 391 Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Foreign Currency Transaction Losses — (3,927 ) Net gain recognized in earnings (2) 7 3 Derivatives not designated as hedging instruments: Net loss recognized in earnings (3) $ — $ (1,378 ) The effect of foreign currency derivative instruments designated as cash flow hedges and of foreign currency derivative instruments not designated as hedges in our Condensed Consolidated Statements of Operations for the three months ended March 31, 2017 was as follows: Three Months Ended March 31, 2017 Foreign Currency Option Contracts Foreign Currency Forward Contracts Derivatives in cash flow hedging relationships: Net loss recognized in Other Comprehensive Income (Loss), net of tax (1) $ (90 ) $ (17 ) Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Sales (42 ) (19 ) Net (loss) gain recognized in earnings (2) (1 ) 2 Derivatives not designated as hedging instruments: Net loss recognized in earnings (3) $ (1,132 ) $ (1,368 ) (1) Net change in the fair value of the effective portion classified in Other Comprehensive Income (Loss). (2) Ineffective portion and amount excluded from effectiveness testing classified in Net Foreign Currency Transaction Losses. (3) Classified in Net Foreign Currency Transaction Losses.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	11. 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 broad levels. The following is a brief description of those three levels: • Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities. • Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. • Level 3: Unobservable inputs that reflect the reporting entity’s own assumptions. Our population of assets and liabilities subject to fair value measurements at March 31, 2018 is as follows: Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 6,105 $ — $ 6,105 $ — Foreign currency option contracts 160 — 160 — Total Assets $ 6,265 $ — $ 6,265 $ — Liabilities: Foreign currency forward exchange contracts $ 42,588 $ — $ 42,588 $ — Total Liabilities $ 42,588 $ — $ 42,588 $ — Our population of assets and liabilities subject to fair value measurements at December 31, 2017 is as follows: Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 7,660 $ — $ 7,660 $ — Foreign currency option contracts 86 — 86 — Total Assets $ 7,746 $ — $ 7,746 $ — Liabilities: Foreign currency forward exchange contracts $ 35,386 $ — $ 35,386 $ — Total Liabilities $ 35,386 $ — $ 35,386 $ — Our foreign currency forward exchange and option contracts are valued using observable Level 2 market expectations at the measurement date and standard valuation techniques to convert future amounts to a single present value amount. Further details regarding our foreign currency forward exchange and option contracts are discussed in Note 10. The carrying amounts reported in the Condensed Consolidated Balance Sheets for Cash and Cash Equivalents, Restricted Cash, Accounts Receivable, Other Current Assets, Accounts Payable and Other Current Liabilities approximate fair value due to their short-term nature. The fair market value of our Long-Term Debt approximates cost based on the borrowing rates currently available to us for bank loans with similar terms and remaining maturities. From time to time, we measure certain assets at fair value on a non-recurring basis, including evaluation of long-lived assets, goodwill and other intangible assets, as part of a business acquisition. These assets are measured and recognized at amounts equal to the fair value determined as of the date of acquisition. Fair value valuations are based on the information available as of the acquisition date and the expectations and assumptions that have been deemed reasonable by us. There are inherent uncertainties and management judgment required in these determinations. The fair value measurements of assets and liabilities assumed as part of a business acquisition are based on valuations involving significant unobservable inputs, or Level 3, in the fair value hierarchy. These assets are also subject to periodic impairment testing by comparing the respective carrying value of each asset to the estimated fair value of the reporting unit or asset group in which they reside. In the event we determine these assets to be impaired, we would recognize an impairment loss equal to the amount by which the carrying value of the reporting unit, impairment asset or asset group exceeds its estimated fair value. These periodic impairment tests utilize company-specific assumptions involving unobservable inputs, or Level 3, in the fair value hierarchy.

Retirement Benefit Plans

Retirement Benefit Plans	3 Months Ended
	Mar. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Retirement Benefit Plans	12. Retirement Benefit Plans Our defined benefit pension plans and postretirement medical plan are described in Note 13 of our annual report on Form 10-K for the year ended December 31, 2017 . We have contributed $114 and $269 during the first quarter of 2018 to our pension plans and postretirement medical plan, respectively. The components of the net periodic (benefit) cost for the three months ended March 31, 2018 and 2017 were as follows: Three Months Ended March 31 Pension Benefits Postretirement U.S. Plans Non-U.S. Plans Medical Benefits 2018 2017 2018 2017 2018 2017 Service cost $ — $ — $ 37 $ 24 $ 14 $ 20 Interest cost 11 390 71 90 75 91 Expected return on plan assets — (585 ) (109 ) (96 ) — — Amortization of net actuarial loss 13 10 — — — — Amortization of prior service cost — — 74 47 — — Foreign currency — — (71 ) (5 ) — — Net periodic cost (benefit) 24 (185 ) 2 60 89 111 Settlement charge 50 — — — — — Net benefit cost (credit) $ 74 $ (185 ) $ 2 $ 60 $ 89 $ 111

Commitments and Contingencies (

Commitments and Contingencies (Notes)	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments Contingencies and Guarantees [Text Block]	13. Commitments and Contingencies 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 March 31, 2018 , of those leases that contain residual value guarantees, the aggregate residual value at lease expiration was $13,721 , of which we have guaranteed $11,228 . As of March 31, 2018 , we have recorded a liability for the estimated end of term loss related to this residual value guarantee of $362 for certain vehicles within our fleet. Our fleet also contains vehicles we estimate will settle at a gain. Gains on these vehicles will be recognized at the end of the lease term.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss (Notes)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Loss	14. Accumulated Other Comprehensive Loss Components of Accumulated Other Comprehensive Loss, net of tax, within the Condensed Consolidated Balance Sheets, are as follows: March 31, 2018 December 31, 2017 Foreign currency translation adjustments $ (7,414 ) $ (15,778 ) Pension and retiree medical benefits (1,679 ) (1,610 ) Cash flow hedge (8,151 ) (4,935 ) Total Accumulated Other Comprehensive Loss $ (17,244 ) $ (22,323 ) The changes in components of Accumulated Other Comprehensive Loss, net of tax, are as follows: Foreign Currency Translation Adjustments Pension and Post Retirement Benefits Cash Flow Hedge Total December 31, 2017 $ (15,778 ) $ (1,610 ) $ (4,935 ) $ (22,323 ) Other comprehensive income (loss) before reclassifications 8,364 19 (5,681 ) 2,702 Amounts reclassified from Accumulated Other Comprehensive Loss — 49 3,591 3,640 Adjustments to Accumulated Other Comprehensive Loss for disproportionate income tax effects recognized from the adoption of ASU 2018-02 — (137 ) (1,126 ) (1,263 ) Net current period other comprehensive income (loss) 8,364 (69 ) (3,216 ) 5,079 March 31, 2018 $ (7,414 ) $ (1,679 ) $ (8,151 ) $ (17,244 )

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	15. Income Taxes 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 longer subject to U.S. federal tax examinations for taxable years before 2014 and, with limited exceptions, state and foreign income tax examinations for taxable years before 2013 . We recognize potential accrued interest and penalties related to unrecognized tax benefits in Income Tax Expense. In addition to the liability of $7,032 for unrecognized tax benefits as of March 31, 2018 , there was approximately $567 for accrued interest and penalties. The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate as of March 31, 2018 was $6,863 . To the extent interest and penalties are not assessed with respect to uncertain tax positions, amounts accrued will be revised and reflected as an adjustment of the Income Tax Expense. We are currently under examination by the Internal Revenue Service for the 2015 tax year. Although the outcome of this matter cannot currently be determined, we believe adequate provision has been made for any potential unfavorable financial statement impact. We are currently undergoing income tax examinations in various state and foreign jurisdictions covering 2014 to 2016 . Although the final outcome of these examinations cannot be currently determined, we believe that we have adequate reserves with respect to these examinations. On December 22, 2017, the Tax Act was signed into law. The Tax Act made broad and complex changes to the U.S. tax code which includes a lowering of the U.S. federal corporate income tax rate from 35% to 21% effective January 1, 2018, accelerated expensing of qualified capital investments for a specific period, limitations of the deductibility of interest expense and executive compensation, and a transition from a worldwide to a territorial tax system, which requires companies to pay a one-time transition tax on certain unrepatriated earnings from foreign subsidiaries that is payable over eight years. ASC 740, Income Taxes, requires a company to record the effects of a tax law change in the period of enactment. ASU 2018-05 allows a company to record a provisional amount when it does not have the necessary information available, prepared or analyzed in reasonable detail to complete its accounting for the change in the tax law. The measurement period ends when the company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. We recorded income tax expense of $1,077 in the first quarter of 2018, or 24.6% of earnings before income taxes. This amount reflects the estimated impacts of requiring a current inclusion in U.S. federal income of certain earnings of controlled foreign corporations, allowing a domestic corporation an immediate deduction in the U.S. taxable income for a portion of its foreign-derived intangible income, the base erosion anti-abuse tax, and limitations on the deductibility of executive compensation. These estimates had an immaterial impact on our effective income tax rate for 2018. We anticipate additional IRS guidance relative to the impacts of the Tax Act will be forthcoming throughout 2018.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2018
Share-based Compensation [Abstract]
Share-Based Compensation	16. Share-Based Compensation Our share-based compensation plans are described in Note 17 of our annual report on Form 10-K for the year ended December 31, 2017 . During the three months ended March 31, 2018 and 2017 , we recognized total Share-Based Compensation Expense of $2,748 and $2,573 , respectively. The total excess tax benefit recognized for share-based compensation arrangements during the three months ended March 31, 2018 and 2017 was $27 and $402 , respectively. During the first three months of 2018 , we issued 16,377 restricted shares. The weighted average grant date fair value of each share awarded was $67.70 . Restricted share awards generally have a three year vesting period from the effective date of the grant. The total fair value of shares vested during the three months ended March 31, 2018 and 2017 was $794 and $625 , respectively.

Earnings (Loss) Attributable to

Earnings (Loss) Attributable to Tennant Company Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings (Loss) Attributable to Tennant Company Per Share	17. Earnings (Loss) Attributable to Tennant Company Per Share The computations of Basic and Diluted Earnings (Loss) per Share were as follows: Three Months Ended March 31 2018 2017 Numerator: Net Earnings (Loss) Attributable to Tennant Company $ 3,274 $ (3,957 ) Denominator: Basic - Weighted Average Shares Outstanding 17,790,989 17,596,546 Effect of dilutive securities: Share-based compensation plans 454,370 — Diluted - Weighted Average Shares Outstanding 18,245,359 17,596,546 Basic Earnings (Loss) per Share $ 0.18 $ (0.22 ) Diluted Earnings (Loss) per Share $ 0.18 $ (0.22 ) Excluded from the dilutive securities shown above were options to purchase and shares to be paid out under share-based compensation plans of 291,622 and 663,306 shares of common stock during the three months ended March 31, 2018 and 2017 , respectively. These exclusions were made if the exercise prices of the options are greater than the average market price of our common stock for the period, if the number of shares we can repurchase under the treasury stock method exceeds the weighted average shares outstanding in the options or if we have a net loss, as these effects are anti-dilutive.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Reporting	18. Segment Reporting We are organized into four operating segments: North America; Latin America; EMEA; and APAC. 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. Further disclosures regarding our net sales by geographic area are discussed in Note 3.

Separate Financial Information

Separate Financial Information of Guarantor Subsidiaries (Notes)	3 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Separate Financial Information of Guarantor Subsidiaries	19. Separate Financial Information of Guarantor Subsidiaries The following condensed consolidated guarantor financial information is presented to comply with the requirements of Rule 3-10 of Regulation S-X. In 2017, we issued and sold $300,000 in aggregate principal amount of our 5.625% Senior Notes due 2025 (the "Notes), pursuant to an Indenture, dated as of April 18, 2017, among the company, the Guarantors (as defined below), and Wells Fargo Bank, National Association, a national banking association, as trustee. The Notes are unconditionally and jointly and severally guaranteed by Tennant Coatings, Inc. and Tennant Sales and Service Company (collectively, the "Guarantors"), which are wholly-owned subsidiaries of the company. The Notes and the guarantees constitute senior unsecured obligations of the company and the Guarantors, respectively. The Notes and the guarantees, respectively, are: (a) equal in right of payment with all of the company’s and the Guarantors’ senior debt, without giving effect to collateral arrangements; (b) senior in right of payment to all of the company’s and the Guarantors’ future subordinated debt, if any; (c) effectively subordinated in right of payment to all of the company’s and the Guarantors’ debt and obligations that are secured, including borrowings under the company’s senior secured credit facilities for so long as the senior secured credit facilities are secured, to the extent of the value of the assets securing such liens; and (d) structurally subordinated in right of payment to all liabilities (including trade payables) of the company’s and the Guarantors’ subsidiaries that do not guarantee the Notes. The following condensed consolidated financial information presents the Condensed Consolidated Statements of Operations and the Condensed Consolidated Statements of Comprehensive Income (Loss) for each of the three months ended March 31, 2018 and March 31, 2017 , the related Condensed Consolidated Balance Sheets as of March 31, 2018 and December 31, 2017 , and the related Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2018 and March 31, 2017 , of Tennant Company ("Parent"), the Guarantor Subsidiaries on a combined basis, the Non-Guarantor Subsidiaries on a combined basis and elimination entries necessary to consolidate the Parent with the Guarantor and Non-Guarantor Subsidiaries. The following condensed consolidated financial statements should be read in conjunction with the consolidated financial statements of the company and notes thereto of which this note is an integral part. Condensed Consolidated Statement of Operations For the three months ended March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net Sales $ 113,690 $ 148,433 $ 140,395 $ (129,671 ) $ 272,847 Cost of Sales 77,231 123,125 90,245 (128,391 ) 162,210 Gross Profit 36,459 25,308 50,150 (1,280 ) 110,637 Operating Expense: Research and Development Expense 6,107 204 1,685 — 7,996 Selling and Administrative Expense 29,088 19,717 43,464 — 92,269 Total Operating Expense 35,195 19,921 45,149 — 100,265 Profit from Operations 1,264 5,387 5,001 (1,280 ) 10,372 Other Income (Expense): Equity in Earnings of Affiliates 4,375 506 2,647 (7,528 ) — Interest (Expense) Income, Net (5,108 ) — 121 (9 ) (4,996 ) Intercompany Interest Income (Expense) 3,725 (1,422 ) (2,303 ) — — Net Foreign Currency Transaction Gains (Losses) 354 (1 ) (1,102 ) — (749 ) Other (Expense) Income, Net (233 ) (591 ) 598 (24 ) (250 ) Total Other Income (Expense), Net 3,113 (1,508 ) (39 ) (7,561 ) (5,995 ) Profit (Loss) Before Income Taxes 4,377 3,879 4,962 (8,841 ) 4,377 Income Tax Expense (Benefit) 1,077 899 1,589 (2,488 ) 1,077 Net Earnings (Loss) Including Noncontrolling Interest 3,300 2,980 3,373 (6,353 ) 3,300 Net Earnings Attributable to Noncontrolling Interest 26 — 26 (26 ) 26 Net Earnings (Loss) Attributable to Tennant Company $ 3,274 $ 2,980 $ 3,347 $ (6,327 ) $ 3,274 Condensed Consolidated Statement of Operations For the three months ended March 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net Sales $ 105,705 $ 139,080 $ 68,834 $ (122,560 ) $ 191,059 Cost of Sales 71,597 112,732 48,582 (121,588 ) 111,323 Gross Profit 34,108 26,348 20,252 (972 ) 79,736 Operating Expense: Research and Development Expense 7,946 87 413 — 8,446 Selling and Administrative Expense 32,064 20,072 21,820 — 73,956 Total Operating Expense 40,010 20,159 22,233 — 82,402 (Loss) Profit from Operations (5,902 ) 6,189 (1,981 ) (972 ) (2,666 ) Other Income (Expense): Equity in Earnings of Affiliates 1,650 329 — (1,979 ) — Interest (Expense) Income, Net (764 ) — 54 — (710 ) Intercompany Interest Income (Expense) 1,469 (1,428 ) (41 ) — — Net Foreign Currency Transaction (Losses) Gains (837 ) 2 (362 ) — (1,197 ) Other (Expense) Income, Net (157 ) (75 ) 264 — 32 Total Other Income (Expense), Net 1,361 (1,172 ) (85 ) (1,979 ) (1,875 ) (Loss) Profit Before Income Taxes (4,541 ) 5,017 (2,066 ) (2,951 ) (4,541 ) Income Tax (Benefit) Expense (584 ) 1,571 (1,024 ) (547 ) (584 ) Net (Loss) Earnings $ (3,957 ) $ 3,446 $ (1,042 ) $ (2,404 ) $ (3,957 ) Condensed Consolidated Statement of Comprehensive Income For the three months ended March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net Earnings Including Noncontrolling Interest $ 3,300 $ 2,980 $ 3,373 $ (6,353 ) $ 3,300 Other Comprehensive Income (Loss): Foreign currency translation adjustments 8,381 (164 ) 7,853 (7,689 ) 8,381 Pension and retiree medical benefits 82 — 19 (19 ) 82 Cash flow hedge (2,715 ) — — — (2,715 ) Income Taxes: Foreign currency translation adjustments (17 ) — (16 ) 16 (17 ) Pension and retiree medical benefits (151 ) — — — (151 ) Cash flow hedge (501 ) — — — (501 ) Total Other Comprehensive Income, net of tax 5,079 (164 ) 7,856 (7,692 ) 5,079 Total Comprehensive Income Including Noncontrolling Interest 8,379 2,816 11,229 (14,045 ) 8,379 Comprehensive Income Attributable to Noncontrolling Interest 26 — 26 (26 ) 26 Comprehensive Income Attributable to Tennant Company $ 8,353 $ 2,816 $ 11,203 $ (14,019 ) $ 8,353 Condensed Consolidated Statement of Comprehensive Income For the three months ended March 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net (Loss) Earnings $ (3,957 ) $ 3,446 $ (1,042 ) $ (2,404 ) $ (3,957 ) Other Comprehensive Income (Loss): Foreign currency translation adjustments 2,400 101 (20,697 ) 20,596 2,400 Pension and retiree medical benefits 10 — — — 10 Cash flow hedge (73 ) — — — (73 ) Income Taxes: Foreign currency translation adjustments — — — — — Pension and retiree medical benefits (18 ) — (14 ) 14 (18 ) Cash flow hedge 27 — — — 27 Total Other Comprehensive Income (Loss), net of tax 2,346 101 (20,711 ) 20,610 2,346 Comprehensive (Loss) Income $ (1,611 ) $ 3,547 $ (21,753 ) $ 18,206 $ (1,611 ) Condensed Consolidated Balance Sheet As of March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company ASSETS Current Assets: Cash and Cash Equivalents $ 14,767 $ 2,078 $ 37,156 $ — $ 54,001 Restricted Cash — — 645 — 645 Net Receivables 605 85,079 126,581 — 212,265 Intercompany Receivables 54,461 131,279 — (185,740 ) — Inventories 32,287 16,076 102,161 (10,234 ) 140,290 Prepaid Expenses 11,781 275 9,481 — 21,537 Other Current Assets 3,864 404 1,674 — 5,942 Total Current Assets 117,765 235,191 277,698 (195,974 ) 434,680 Property, Plant and Equipment 224,426 12,738 149,966 — 387,130 Accumulated Depreciation (148,975 ) (6,502 ) (53,727 ) — (209,204 ) Property, Plant and Equipment, Net 75,451 6,236 96,239 — 177,926 Deferred Income Taxes 2,178 3,233 9,421 — 14,832 Investment in Affiliates 408,509 11,562 22,260 (442,331 ) — Intercompany Loans 314,905 — 3,690 (318,595 ) — Goodwill 12,869 1,739 181,557 — 196,165 Intangible Assets, Net 2,974 2,862 166,461 — 172,297 Other Assets 9,083 (427 ) 11,346 — 20,002 Total Assets $ 943,734 $ 260,396 $ 768,672 $ (956,900 ) $ 1,015,902 LIABILITIES AND TOTAL EQUITY Current Liabilities: Current Portion of Long-Term Debt $ 29,460 $ — $ 1,442 $ — $ 30,902 Accounts Payable 42,583 4,029 56,090 — 102,702 Intercompany Payables 131,279 1,360 53,101 (185,740 ) — Employee Compensation and Benefits 8,976 8,194 17,504 — 34,674 Income Taxes Payable 341 — 2,459 — 2,800 Other Current Liabilities 27,447 10,780 32,066 — 70,293 Total Current Liabilities 240,086 24,363 162,662 (185,740 ) 241,371 Long-Term Liabilities: Long-Term Debt 340,447 — 1,973 — 342,420 Intercompany Loans 3,690 128,000 186,905 (318,595 ) — Employee-Related Benefits 12,576 1,869 8,949 — 23,394 Deferred Income Taxes — — 53,412 — 53,412 Other Liabilities 39,564 2,669 5,701 — 47,934 Total Long-Term Liabilities 396,277 132,538 256,940 (318,595 ) 467,160 Total Liabilities 636,363 156,901 419,602 (504,335 ) 708,531 Equity: Common Stock 6,717 — 11,131 (11,131 ) 6,717 Additional Paid-In Capital 18,295 77,551 384,460 (462,011 ) 18,295 Retained Earnings 297,717 26,777 (17,872 ) (8,905 ) 297,717 Accumulated Other Comprehensive Loss (17,244 ) (833 ) (30,535 ) 31,368 (17,244 ) Total Tennant Company Shareholders' Equity 305,485 103,495 347,184 (450,679 ) 305,485 Noncontrolling Interest 1,886 — 1,886 (1,886 ) 1,886 Total Equity 307,371 103,495 349,070 (452,565 ) 307,371 Total Liabilities and Total Equity $ 943,734 $ 260,396 $ 768,672 $ (956,900 ) $ 1,015,902 Condensed Consolidated Balance Sheet As of December 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company ASSETS Current Assets: Cash and Cash Equivalents $ 18,469 $ 507 $ 39,422 $ — $ 58,398 Restricted Cash — — 653 — 653 Net Receivables 683 88,629 120,204 — 209,516 Intercompany Receivables 53,444 133,778 — (187,222 ) — Inventories 29,450 12,695 94,542 (8,993 ) 127,694 Prepaid Expenses 8,774 1,172 9,405 — 19,351 Other Current Assets 4,030 — 3,473 — 7,503 Total Current Assets 114,850 236,781 267,699 (196,215 ) 423,115 Property, Plant and Equipment 225,064 12,155 145,549 — 382,768 Accumulated Depreciation (146,320 ) (6,333 ) (50,097 ) — (202,750 ) Property, Plant and Equipment, Net 78,744 5,822 95,452 — 180,018 Deferred Income Taxes 1,308 2,669 7,157 — 11,134 Investment in Affiliates 392,486 11,273 20,811 (424,570 ) — Intercompany Loans 304,822 — 4,983 (309,805 ) — Goodwill 12,869 1,739 171,436 — 186,044 Intangible Assets, Net 2,105 2,898 167,344 — 172,347 Other Assets 10,363 — 10,956 — 21,319 Total Assets $ 917,547 $ 261,182 $ 745,838 $ (930,590 ) $ 993,977 LIABILITIES AND TOTAL EQUITY Current Liabilities: Current Portion of Long-Term Debt $ 29,413 $ — $ 1,470 $ — $ 30,883 Accounts Payable 39,927 3,018 53,137 — 96,082 Intercompany Payables 133,778 1,963 51,481 (187,222 ) — Employee Compensation and Benefits 8,311 10,355 18,591 — 37,257 Income Taxes Payable 366 — 2,472 — 2,838 Other Current Liabilities 20,183 15,760 33,504 — 69,447 Total Current Liabilities 231,978 31,096 160,655 (187,222 ) 236,507 Long-Term Liabilities: Long-Term Debt 344,147 — 1,809 — 345,956 Intercompany Loans — 128,000 181,805 (309,805 ) — Employee-Related Benefits 11,160 3,992 8,715 — 23,867 Deferred Income Taxes — — 53,225 — 53,225 Other Liabilities 31,788 2,483 1,677 — 35,948 Total Long-Term Liabilities 387,095 134,475 247,231 (309,805 ) 458,996 Total Liabilities 619,073 165,571 407,886 (497,027 ) 695,503 Equity: Common Stock 6,705 — 11,131 (11,131 ) 6,705 Additional Paid-In Capital 15,089 72,483 384,460 (456,943 ) 15,089 Retained Earnings 297,032 23,797 (21,219 ) (2,578 ) 297,032 Accumulated Other Comprehensive Loss (22,323 ) (669 ) (38,391 ) 39,060 (22,323 ) Total Tennant Company Shareholders' Equity 296,503 95,611 335,981 (431,592 ) 296,503 Noncontrolling Interest 1,971 — 1,971 (1,971 ) 1,971 Total Equity 298,474 95,611 337,952 (433,563 ) 298,474 Total Liabilities and Total Equity $ 917,547 $ 261,182 $ 745,838 $ (930,590 ) $ 993,977 Condensed Consolidated Statement of Cash Flows For the three months ended March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ 5,815 $ 1,800 $ (2,076 ) $ — $ 5,539 INVESTING ACTIVITIES Purchases of Property, Plant and Equipment (342 ) (229 ) (2,909 ) — (3,480 ) Proceeds from Disposals of Property, Plant and Equipment 11 — 5 — 16 Proceeds from Principal Payments Received on Long-Term Note Receivable — — 167 — 167 Purchase of Intangible Asset (1,000 ) — — — (1,000 ) Loan (Payments) Borrowings from Subsidiaries (1,294 ) — — 1,294 — Net Cash Used in Investing Activities (2,625 ) (229 ) (2,737 ) 1,294 (4,297 ) FINANCING ACTIVITIES Loan Borrowings (Payments) from Parent — — 1,294 (1,294 ) — Payments of Long-Term Debt (4,000 ) — (37 ) — (4,037 ) Change in Capital Lease Obligations — — 81 — 81 Proceeds from Issuances of Common Stock 794 — — — 794 Dividends Paid (3,758 ) — — — (3,758 ) Net Cash (Used in) Provided by Financing Activities (6,964 ) — 1,338 (1,294 ) (6,920 ) Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash 72 — 1,201 — 1,273 Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash (3,702 ) 1,571 (2,274 ) — (4,405 ) Cash, Cash Equivalents and Restricted Cash at Beginning of Period 18,469 507 40,075 — 59,051 Cash, Cash Equivalents and Restricted Cash at End of Period $ 14,767 $ 2,078 $ 37,801 $ — $ 54,646 Condensed Consolidated Statement of Cash Flows For the three months ended March 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company OPERATING ACTIVITIES Net Cash (Used in) Provided by Operating Activities $ (14,063 ) $ 438 $ 2,516 $ — $ (11,109 ) INVESTING ACTIVITIES Purchases of Property, Plant and Equipment (1,188 ) — (3,485 ) — (4,673 ) Proceeds from Disposals of Property, Plant and Equipment 6 — 47 — 53 Issuance of Long-Term Note Receivable — — (1,500 ) — (1,500 ) Acquisition of Business, Net of Cash Acquired (304 ) — — — (304 ) Purchase of Intangible Asset (2,500 ) — — — (2,500 ) Change in Investments in Subsidiaries (3,500 ) — — 3,500 — Net Cash Used in Investing Activities (7,486 ) — (4,938 ) 3,500 (8,924 ) FINANCING ACTIVITIES Change in Subsidiary Equity — — 3,500 (3,500 ) — Proceeds from Issuance of Long-Term Debt 20,000 — — — 20,000 Payments of Long-Term Debt (11,143 ) — (8 ) — (11,151 ) Proceeds from Issuance of Common Stock 1,655 — — — 1,655 Dividends Paid (3,722 ) — — — (3,722 ) Net Cash Provided by Financing Activities 6,790 — 3,492 (3,500 ) 6,782 Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash (102 ) — 432 — 330 Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash (14,861 ) 438 1,502 — (12,921 ) Cash, Cash Equivalents and Restricted Cash at Beginning of Period 38,484 226 19,840 — 58,550 Cash, Cash Equivalents and Restricted Cash at End of Period $ 23,623 $ 664 $ 21,342 $ — $ 45,629

Summary of Significant Accoun26

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation – The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with the Securities and Exchange Commission (“SEC”) requirements for interim reporting, which allows certain footnotes and other financial information normally required by accounting principles generally accepted in the United States of America to be condensed or omitted. In our opinion, the Condensed Consolidated Financial Statements contain all adjustments (consisting of only normal recurring adjustments) necessary for the fair presentation of our financial position and results of operations. These statements should be read in conjunction with the Consolidated Financial Statements and Notes included in our annual report on Form 10-K for the year ended December 31, 2017 . The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year.
Revenue Recognition	Revenue Recognition – 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. Further details regarding revenue recognition are discussed in Notes 2 and 3.
New Accounting Pronouncements	New Accounting Pronouncements – Further details regarding the adoption of new accounting standards are discussed in Note 2.

Newly Adopted Accounting Pron27

Newly Adopted Accounting Pronouncements (Tables)	3 Months Ended
	Mar. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	The reclassification from Accounts Receivable to Other Current Liabilities in accordance with the detail described above impacted the Condensed Consolidated Balance Sheet as of March 31, 2018 , as follows (in thousands): As Reported Balances Without Adoption of ASC 606 Effect of Change Higher/(Lower) ASSETS Accounts Receivable $ 212,265 $ 211,204 $ 1,061 Total Current Assets 434,680 433,619 1,061 Total Assets $ 1,015,902 $ 1,014,841 $ 1,061 LIABILITIES Other Current Liabilities $ 70,293 $ 69,232 $ 1,061 Total Current Liabilities 241,371 240,310 1,061 Total Liabilities $ 708,531 $ 707,470 $ 1,061
Schedule of Reconciliation Between Cash and Cash Equivalents and Restricted Cash on the Balance Sheet to Cash, Cash Equivalents and Restricted Cash on the Statement of Cash Flow [Table Text Block]	The following table provides a reconciliation of Cash and Cash Equivalents and Restricted Cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same amounts shown in the Condensed Consolidated Statements of Cash Flows (in thousands): March 31, 2018 Cash and Cash Equivalents $ 54,001 Restricted Cash 645 Total Cash, Cash Equivalents and Restricted Cash at end of period shown in the Condensed Consolidated Statements of Cash Flows $ 54,646

Revenue from Contracts with C28

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	The following tables illustrate the disaggregation of revenue by geographic area, groups of similar products and services and sales channels for the three months ended March 31, 2018 and 2017 (in thousands): Net Sales by geographic area Three Months Ended March 31 2018 2017 Americas $ 162,638 $ 142,770 Europe, Middle East and Africa 88,816 33,276 Asia Pacific 21,393 15,013 Total $ 272,847 $ 191,059 Net Sales are attributed to each geographic area based on the country from which the product was shipped and are net of intercompany sales. Net Sales by groups of similar products and services Three Months Ended March 31 2018 2017 Equipment $ 172,074 $ 113,341 Parts and Consumables 57,441 42,803 Specialty Surface Coatings 6,455 6,681 Service and Other 36,877 28,234 Total $ 272,847 $ 191,059 Net Sales by sales channel Three Months Ended March 31 2018 2017 Sales Direct to Consumer $ 178,710 $ 143,623 Sales to Distributors 94,137 47,436 Total $ 272,847 $ 191,059
Schedule of Future Performance Obligations Satisfied for Which Consideration from Customer has been Received or is Due [Table Text Block]	At March 31, 2018, $4,732 and $2,669 of unearned revenue associated with outstanding prepaid service contracts was reported in Other Current Liabilities and Other Liabilities, respectively, on our Condensed Consolidated Balance Sheet. Of this, we expect to recognize the following approximate amounts in Net Sales in the following periods: Remaining 2018 $ 3,799 2019 1,835 2020 1,115 2021 416 2022 230 Thereafter 6 Total $ 7,401

Management Actions (Tables)

Management Actions (Tables)	3 Months Ended
	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Reconciliation of beginning and ending liability balances	A reconciliation of the beginning and ending liability balances is as follows: Severance and Related Costs 2017 restructuring actions $ 9,558 Cash payments (6,312 ) Foreign currency adjustments 190 December 31, 2017 balance $ 3,436 2018 utilization: Cash payments (714 ) Foreign currency adjustments 104 March 31, 2018 balance $ 2,826

Acquisition (Tables)

Acquisition (Tables)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the final fair value measurement of the assets acquired and liabilities assumed as of the date of acquisition: ASSETS Receivables $ 39,984 Inventories 46,442 Other Current Assets 7,456 Assets Held for Sale 2,247 Property, Plant and Equipment 63,890 Intangible Assets Subject to Amortization: Trade Name 26,753 Customer Lists 123,061 Technology 9,631 Other Assets 2,000 Total Identifiable Assets Acquired 321,464 LIABILITIES Accounts Payable 32,227 Accrued Expenses 18,130 Deferred Income Taxes 56,950 Other Liabilities 10,964 Total Identifiable Liabilities Assumed 118,271 Net Identifiable Assets Acquired 203,193 Noncontrolling Interest (1,896 ) Goodwill 152,472 Total Purchase Price, net of Cash Acquired $ 353,769
Schedule of Pro Forma Financial Information		The following unaudited pro forma financial information presents the combined results of operations of Tennant Company as if the 2017 acquisition of the IPC Group had occurred as of January 1, 2016. The unaudited pro forma financial information is presented for informational purposes only. It is not necessarily indicative of what our consolidated results of operations actually would have been had the acquisition occurred at the beginning of fiscal 2016. No pro forma results are presented for the three months ended March 31, 2018 as the results of the acquired company are included in the actual three month results. Pro Forma Financial Information (Unaudited) Three Months Ended (In thousands, except per share data) March 31 2017 Net Sales Pro forma $ 245,120 As reported 191,059 Net Loss Attributable to Tennant Company Pro forma $ (2,426 ) As reported (3,957 ) Net Loss Attributable to Tennant Company per Share Pro forma $ (0.14 ) As reported (0.22 )

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories are valued at the lower of cost or market. Inventories at March 31, 2018 and December 31, 2017 consisted of the following: March 31, December 31, Inventories carried at LIFO: Finished goods $ 47,131 $ 43,439 Raw materials, production parts and work-in-process 26,375 23,694 LIFO reserve (28,788 ) (28,429 ) Total LIFO inventories 44,718 38,704 Inventories carried at FIFO: Finished goods 55,747 54,161 Raw materials, production parts and work-in-process 39,825 34,829 Total FIFO inventories 95,572 88,990 Total inventories $ 140,290 $ 127,694

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the carrying value of Goodwill	The changes in the carrying value of Goodwill for the three months ended March 31, 2018 were as follows: Goodwill Accumulated Impairment Losses Total Balance as of December 31, 2017 $ 227,224 $ (41,180 ) $ 186,044 Purchase accounting adjustments 4,627 — 4,627 Foreign currency fluctuations 7,047 (1,553 ) 5,494 Balance as of March 31, 2018 $ 238,898 $ (42,733 ) $ 196,165
Acquired Intangible Assets excluding Goodwill	The balances of acquired Intangible Assets, excluding Goodwill, as of March 31, 2018 and December 31, 2017 , were as follows: Customer Lists Trade Names Technology Total Balance as of March 31, 2018 Original cost $ 154,096 $ 32,818 $ 15,894 $ 202,808 Accumulated amortization (23,303 ) (3,293 ) (3,915 ) (30,511 ) Carrying value $ 130,793 $ 29,525 $ 11,979 $ 172,297 Weighted average original life (in years) 15 10 11 Balance as of December 31, 2017 Original cost $ 149,355 $ 31,968 $ 14,589 $ 195,912 Accumulated amortization (17,870 ) (2,436 ) (3,259 ) (23,565 ) Carrying value $ 131,485 $ 29,532 $ 11,330 $ 172,347 Weighted average original life (in years) 15 10 11
Estimated aggregate amortization expense of Intangible Assets	Estimated aggregate amortization expense based on the current carrying value of amortizable Intangible Assets for each of the five succeeding years and thereafter is as follows: Remaining 2018 $ 17,115 2019 22,388 2020 20,853 2021 19,170 2022 16,928 Thereafter 75,843 Total $ 172,297

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Summary of Outstanding Debt	Debt outstanding at March 31 consisted of the following: March 31, December 31, Long-Term Debt: Senior unsecured notes $ 300,000 $ 300,000 Credit facility borrowings 76,000 80,000 Capital lease obligations 3,416 3,279 Total Long-Term Debt 379,416 383,279 Less: unamortized debt issuance costs (6,094 ) (6,440 ) Less: current maturities of credit facility borrowings, net of debt issuance costs (1) (29,460 ) (29,413 ) Less: current maturities of capital lease obligations (1) (1,442 ) (1,470 ) Long-term portion $ 342,420 $ 345,956 (1) Current maturities of long-term debt include $30,000 of current maturities, less $540 of unamortized debt issuance costs, under our 2017 Credit Agreement and $1,442 of current maturities of capital lease obligations.

Warranty (Tables)

Warranty (Tables)	3 Months Ended
	Mar. 31, 2018
Product Warranties Disclosures [Abstract]
Changes in warranty reserve	The changes in warranty reserves for the three months ended March 31, 2018 and 2017 were as follows: Three Months Ended March 31 2018 2017 Beginning balance $ 12,676 $ 10,960 Additions charged to expense 3,334 2,072 Foreign currency fluctuations 86 50 Claims paid (3,288 ) (2,800 ) Ending balance $ 12,808 $ 10,282

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of derivative instruments on our Condensed Consolidated Balance Sheets	The fair value of derivative instruments on our Condensed Consolidated Balance Sheets as of March 31, 2018 and December 31, 2017 were as follows: March 31, 2018 December 31, 2017 Fair Value Asset Derivatives Fair Value Liability Derivatives Fair Value Asset Derivatives Fair Value Liability Derivatives Derivatives designated as hedging instruments: Foreign currency option contracts (1) $ 160 $ — $ 86 $ — Foreign currency forward contracts (1) 5,590 41,224 7,218 34,961 Derivatives not designated as hedging instruments: Foreign currency forward contracts (1) $ 515 $ 1,364 $ 442 $ 425 (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 Condensed 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 Condensed Consolidated Balance Sheets. Amounts included in our Condensed Consolidated Balance Sheets are recorded net where a right of offset exists with the same derivative counterparty.
Derivative Instruments, Gain (Loss) [Table Text Block]	The effect of foreign currency derivative instruments designated as cash flow hedges and of foreign currency derivative instruments not designated as hedges in our Condensed Consolidated Statements of Operations for the three months ended March 31, 2018 was as follows: Three Months Ended March 31, 2018 Foreign Currency Option Contracts Foreign Currency Forward Contracts Derivatives in cash flow hedging relationships: Net gain (loss) recognized in Other Comprehensive Income (Loss), net of tax (1) $ 16 $ (5,697 ) Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Sales (41 ) (14 ) Net gain reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Interest Income — 391 Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Foreign Currency Transaction Losses — (3,927 ) Net gain recognized in earnings (2) 7 3 Derivatives not designated as hedging instruments: Net loss recognized in earnings (3) $ — $ (1,378 ) The effect of foreign currency derivative instruments designated as cash flow hedges and of foreign currency derivative instruments not designated as hedges in our Condensed Consolidated Statements of Operations for the three months ended March 31, 2017 was as follows: Three Months Ended March 31, 2017 Foreign Currency Option Contracts Foreign Currency Forward Contracts Derivatives in cash flow hedging relationships: Net loss recognized in Other Comprehensive Income (Loss), net of tax (1) $ (90 ) $ (17 ) Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Sales (42 ) (19 ) Net (loss) gain recognized in earnings (2) (1 ) 2 Derivatives not designated as hedging instruments: Net loss recognized in earnings (3) $ (1,132 ) $ (1,368 ) (1) Net change in the fair value of the effective portion classified in Other Comprehensive Income (Loss). (2) Ineffective portion and amount excluded from effectiveness testing classified in Net Foreign Currency Transaction Losses. (3) Classified in Net Foreign Currency Transaction Losses.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair value measurements of assets and liabilities	Our population of assets and liabilities subject to fair value measurements at March 31, 2018 is as follows: Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 6,105 $ — $ 6,105 $ — Foreign currency option contracts 160 — 160 — Total Assets $ 6,265 $ — $ 6,265 $ — Liabilities: Foreign currency forward exchange contracts $ 42,588 $ — $ 42,588 $ — Total Liabilities $ 42,588 $ — $ 42,588 $ — Our population of assets and liabilities subject to fair value measurements at December 31, 2017 is as follows: Fair Value Level 1 Level 2 Level 3 Assets: Foreign currency forward exchange contracts $ 7,660 $ — $ 7,660 $ — Foreign currency option contracts 86 — 86 — Total Assets $ 7,746 $ — $ 7,746 $ — Liabilities: Foreign currency forward exchange contracts $ 35,386 $ — $ 35,386 $ — Total Liabilities $ 35,386 $ — $ 35,386 $ —

Retirement Benefit Plans (Table

Retirement Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Components of the net benefit cost (credit)	The components of the net periodic (benefit) cost for the three months ended March 31, 2018 and 2017 were as follows: Three Months Ended March 31 Pension Benefits Postretirement U.S. Plans Non-U.S. Plans Medical Benefits 2018 2017 2018 2017 2018 2017 Service cost $ — $ — $ 37 $ 24 $ 14 $ 20 Interest cost 11 390 71 90 75 91 Expected return on plan assets — (585 ) (109 ) (96 ) — — Amortization of net actuarial loss 13 10 — — — — Amortization of prior service cost — — 74 47 — — Foreign currency — — (71 ) (5 ) — — Net periodic cost (benefit) 24 (185 ) 2 60 89 111 Settlement charge 50 — — — — — Net benefit cost (credit) $ 74 $ (185 ) $ 2 $ 60 $ 89 $ 111

Accumulated Other Comprehensi38

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss, net of tax	Components of Accumulated Other Comprehensive Loss, net of tax, within the Condensed Consolidated Balance Sheets, are as follows: March 31, 2018 December 31, 2017 Foreign currency translation adjustments $ (7,414 ) $ (15,778 ) Pension and retiree medical benefits (1,679 ) (1,610 ) Cash flow hedge (8,151 ) (4,935 ) Total Accumulated Other Comprehensive Loss $ (17,244 ) $ (22,323 )
Changes in components of Accumulated Other Comprehensive Loss, net of tax	The changes in components of Accumulated Other Comprehensive Loss, net of tax, are as follows: Foreign Currency Translation Adjustments Pension and Post Retirement Benefits Cash Flow Hedge Total December 31, 2017 $ (15,778 ) $ (1,610 ) $ (4,935 ) $ (22,323 ) Other comprehensive income (loss) before reclassifications 8,364 19 (5,681 ) 2,702 Amounts reclassified from Accumulated Other Comprehensive Loss — 49 3,591 3,640 Adjustments to Accumulated Other Comprehensive Loss for disproportionate income tax effects recognized from the adoption of ASU 2018-02 — (137 ) (1,126 ) (1,263 ) Net current period other comprehensive income (loss) 8,364 (69 ) (3,216 ) 5,079 March 31, 2018 $ (7,414 ) $ (1,679 ) $ (8,151 ) $ (17,244 )

Earnings (Loss) Attributable 39

Earnings (Loss) Attributable to Tennant Company Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings (Loss) per Share	The computations of Basic and Diluted Earnings (Loss) per Share were as follows: Three Months Ended March 31 2018 2017 Numerator: Net Earnings (Loss) Attributable to Tennant Company $ 3,274 $ (3,957 ) Denominator: Basic - Weighted Average Shares Outstanding 17,790,989 17,596,546 Effect of dilutive securities: Share-based compensation plans 454,370 — Diluted - Weighted Average Shares Outstanding 18,245,359 17,596,546 Basic Earnings (Loss) per Share $ 0.18 $ (0.22 ) Diluted Earnings (Loss) per Share $ 0.18 $ (0.22 )

Separate Financial Informatio40

Separate Financial Information of Guarantor Subsidiaries (Tables)	3 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Consolidated Statements of Operations	Condensed Consolidated Statement of Operations For the three months ended March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net Sales $ 113,690 $ 148,433 $ 140,395 $ (129,671 ) $ 272,847 Cost of Sales 77,231 123,125 90,245 (128,391 ) 162,210 Gross Profit 36,459 25,308 50,150 (1,280 ) 110,637 Operating Expense: Research and Development Expense 6,107 204 1,685 — 7,996 Selling and Administrative Expense 29,088 19,717 43,464 — 92,269 Total Operating Expense 35,195 19,921 45,149 — 100,265 Profit from Operations 1,264 5,387 5,001 (1,280 ) 10,372 Other Income (Expense): Equity in Earnings of Affiliates 4,375 506 2,647 (7,528 ) — Interest (Expense) Income, Net (5,108 ) — 121 (9 ) (4,996 ) Intercompany Interest Income (Expense) 3,725 (1,422 ) (2,303 ) — — Net Foreign Currency Transaction Gains (Losses) 354 (1 ) (1,102 ) — (749 ) Other (Expense) Income, Net (233 ) (591 ) 598 (24 ) (250 ) Total Other Income (Expense), Net 3,113 (1,508 ) (39 ) (7,561 ) (5,995 ) Profit (Loss) Before Income Taxes 4,377 3,879 4,962 (8,841 ) 4,377 Income Tax Expense (Benefit) 1,077 899 1,589 (2,488 ) 1,077 Net Earnings (Loss) Including Noncontrolling Interest 3,300 2,980 3,373 (6,353 ) 3,300 Net Earnings Attributable to Noncontrolling Interest 26 — 26 (26 ) 26 Net Earnings (Loss) Attributable to Tennant Company $ 3,274 $ 2,980 $ 3,347 $ (6,327 ) $ 3,274 Condensed Consolidated Statement of Operations For the three months ended March 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net Sales $ 105,705 $ 139,080 $ 68,834 $ (122,560 ) $ 191,059 Cost of Sales 71,597 112,732 48,582 (121,588 ) 111,323 Gross Profit 34,108 26,348 20,252 (972 ) 79,736 Operating Expense: Research and Development Expense 7,946 87 413 — 8,446 Selling and Administrative Expense 32,064 20,072 21,820 — 73,956 Total Operating Expense 40,010 20,159 22,233 — 82,402 (Loss) Profit from Operations (5,902 ) 6,189 (1,981 ) (972 ) (2,666 ) Other Income (Expense): Equity in Earnings of Affiliates 1,650 329 — (1,979 ) — Interest (Expense) Income, Net (764 ) — 54 — (710 ) Intercompany Interest Income (Expense) 1,469 (1,428 ) (41 ) — — Net Foreign Currency Transaction (Losses) Gains (837 ) 2 (362 ) — (1,197 ) Other (Expense) Income, Net (157 ) (75 ) 264 — 32 Total Other Income (Expense), Net 1,361 (1,172 ) (85 ) (1,979 ) (1,875 ) (Loss) Profit Before Income Taxes (4,541 ) 5,017 (2,066 ) (2,951 ) (4,541 ) Income Tax (Benefit) Expense (584 ) 1,571 (1,024 ) (547 ) (584 ) Net (Loss) Earnings $ (3,957 ) $ 3,446 $ (1,042 ) $ (2,404 ) $ (3,957 )
Condensed Consolidated Statements of Comprehensive Income	Condensed Consolidated Statement of Comprehensive Income For the three months ended March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net Earnings Including Noncontrolling Interest $ 3,300 $ 2,980 $ 3,373 $ (6,353 ) $ 3,300 Other Comprehensive Income (Loss): Foreign currency translation adjustments 8,381 (164 ) 7,853 (7,689 ) 8,381 Pension and retiree medical benefits 82 — 19 (19 ) 82 Cash flow hedge (2,715 ) — — — (2,715 ) Income Taxes: Foreign currency translation adjustments (17 ) — (16 ) 16 (17 ) Pension and retiree medical benefits (151 ) — — — (151 ) Cash flow hedge (501 ) — — — (501 ) Total Other Comprehensive Income, net of tax 5,079 (164 ) 7,856 (7,692 ) 5,079 Total Comprehensive Income Including Noncontrolling Interest 8,379 2,816 11,229 (14,045 ) 8,379 Comprehensive Income Attributable to Noncontrolling Interest 26 — 26 (26 ) 26 Comprehensive Income Attributable to Tennant Company $ 8,353 $ 2,816 $ 11,203 $ (14,019 ) $ 8,353 Condensed Consolidated Statement of Comprehensive Income For the three months ended March 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company Net (Loss) Earnings $ (3,957 ) $ 3,446 $ (1,042 ) $ (2,404 ) $ (3,957 ) Other Comprehensive Income (Loss): Foreign currency translation adjustments 2,400 101 (20,697 ) 20,596 2,400 Pension and retiree medical benefits 10 — — — 10 Cash flow hedge (73 ) — — — (73 ) Income Taxes: Foreign currency translation adjustments — — — — — Pension and retiree medical benefits (18 ) — (14 ) 14 (18 ) Cash flow hedge 27 — — — 27 Total Other Comprehensive Income (Loss), net of tax 2,346 101 (20,711 ) 20,610 2,346 Comprehensive (Loss) Income $ (1,611 ) $ 3,547 $ (21,753 ) $ 18,206 $ (1,611 )
Condensed Consolidated Balance Sheets	Condensed Consolidated Balance Sheet As of March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company ASSETS Current Assets: Cash and Cash Equivalents $ 14,767 $ 2,078 $ 37,156 $ — $ 54,001 Restricted Cash — — 645 — 645 Net Receivables 605 85,079 126,581 — 212,265 Intercompany Receivables 54,461 131,279 — (185,740 ) — Inventories 32,287 16,076 102,161 (10,234 ) 140,290 Prepaid Expenses 11,781 275 9,481 — 21,537 Other Current Assets 3,864 404 1,674 — 5,942 Total Current Assets 117,765 235,191 277,698 (195,974 ) 434,680 Property, Plant and Equipment 224,426 12,738 149,966 — 387,130 Accumulated Depreciation (148,975 ) (6,502 ) (53,727 ) — (209,204 ) Property, Plant and Equipment, Net 75,451 6,236 96,239 — 177,926 Deferred Income Taxes 2,178 3,233 9,421 — 14,832 Investment in Affiliates 408,509 11,562 22,260 (442,331 ) — Intercompany Loans 314,905 — 3,690 (318,595 ) — Goodwill 12,869 1,739 181,557 — 196,165 Intangible Assets, Net 2,974 2,862 166,461 — 172,297 Other Assets 9,083 (427 ) 11,346 — 20,002 Total Assets $ 943,734 $ 260,396 $ 768,672 $ (956,900 ) $ 1,015,902 LIABILITIES AND TOTAL EQUITY Current Liabilities: Current Portion of Long-Term Debt $ 29,460 $ — $ 1,442 $ — $ 30,902 Accounts Payable 42,583 4,029 56,090 — 102,702 Intercompany Payables 131,279 1,360 53,101 (185,740 ) — Employee Compensation and Benefits 8,976 8,194 17,504 — 34,674 Income Taxes Payable 341 — 2,459 — 2,800 Other Current Liabilities 27,447 10,780 32,066 — 70,293 Total Current Liabilities 240,086 24,363 162,662 (185,740 ) 241,371 Long-Term Liabilities: Long-Term Debt 340,447 — 1,973 — 342,420 Intercompany Loans 3,690 128,000 186,905 (318,595 ) — Employee-Related Benefits 12,576 1,869 8,949 — 23,394 Deferred Income Taxes — — 53,412 — 53,412 Other Liabilities 39,564 2,669 5,701 — 47,934 Total Long-Term Liabilities 396,277 132,538 256,940 (318,595 ) 467,160 Total Liabilities 636,363 156,901 419,602 (504,335 ) 708,531 Equity: Common Stock 6,717 — 11,131 (11,131 ) 6,717 Additional Paid-In Capital 18,295 77,551 384,460 (462,011 ) 18,295 Retained Earnings 297,717 26,777 (17,872 ) (8,905 ) 297,717 Accumulated Other Comprehensive Loss (17,244 ) (833 ) (30,535 ) 31,368 (17,244 ) Total Tennant Company Shareholders' Equity 305,485 103,495 347,184 (450,679 ) 305,485 Noncontrolling Interest 1,886 — 1,886 (1,886 ) 1,886 Total Equity 307,371 103,495 349,070 (452,565 ) 307,371 Total Liabilities and Total Equity $ 943,734 $ 260,396 $ 768,672 $ (956,900 ) $ 1,015,902 Condensed Consolidated Balance Sheet As of December 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company ASSETS Current Assets: Cash and Cash Equivalents $ 18,469 $ 507 $ 39,422 $ — $ 58,398 Restricted Cash — — 653 — 653 Net Receivables 683 88,629 120,204 — 209,516 Intercompany Receivables 53,444 133,778 — (187,222 ) — Inventories 29,450 12,695 94,542 (8,993 ) 127,694 Prepaid Expenses 8,774 1,172 9,405 — 19,351 Other Current Assets 4,030 — 3,473 — 7,503 Total Current Assets 114,850 236,781 267,699 (196,215 ) 423,115 Property, Plant and Equipment 225,064 12,155 145,549 — 382,768 Accumulated Depreciation (146,320 ) (6,333 ) (50,097 ) — (202,750 ) Property, Plant and Equipment, Net 78,744 5,822 95,452 — 180,018 Deferred Income Taxes 1,308 2,669 7,157 — 11,134 Investment in Affiliates 392,486 11,273 20,811 (424,570 ) — Intercompany Loans 304,822 — 4,983 (309,805 ) — Goodwill 12,869 1,739 171,436 — 186,044 Intangible Assets, Net 2,105 2,898 167,344 — 172,347 Other Assets 10,363 — 10,956 — 21,319 Total Assets $ 917,547 $ 261,182 $ 745,838 $ (930,590 ) $ 993,977 LIABILITIES AND TOTAL EQUITY Current Liabilities: Current Portion of Long-Term Debt $ 29,413 $ — $ 1,470 $ — $ 30,883 Accounts Payable 39,927 3,018 53,137 — 96,082 Intercompany Payables 133,778 1,963 51,481 (187,222 ) — Employee Compensation and Benefits 8,311 10,355 18,591 — 37,257 Income Taxes Payable 366 — 2,472 — 2,838 Other Current Liabilities 20,183 15,760 33,504 — 69,447 Total Current Liabilities 231,978 31,096 160,655 (187,222 ) 236,507 Long-Term Liabilities: Long-Term Debt 344,147 — 1,809 — 345,956 Intercompany Loans — 128,000 181,805 (309,805 ) — Employee-Related Benefits 11,160 3,992 8,715 — 23,867 Deferred Income Taxes — — 53,225 — 53,225 Other Liabilities 31,788 2,483 1,677 — 35,948 Total Long-Term Liabilities 387,095 134,475 247,231 (309,805 ) 458,996 Total Liabilities 619,073 165,571 407,886 (497,027 ) 695,503 Equity: Common Stock 6,705 — 11,131 (11,131 ) 6,705 Additional Paid-In Capital 15,089 72,483 384,460 (456,943 ) 15,089 Retained Earnings 297,032 23,797 (21,219 ) (2,578 ) 297,032 Accumulated Other Comprehensive Loss (22,323 ) (669 ) (38,391 ) 39,060 (22,323 ) Total Tennant Company Shareholders' Equity 296,503 95,611 335,981 (431,592 ) 296,503 Noncontrolling Interest 1,971 — 1,971 (1,971 ) 1,971 Total Equity 298,474 95,611 337,952 (433,563 ) 298,474 Total Liabilities and Total Equity $ 917,547 $ 261,182 $ 745,838 $ (930,590 ) $ 993,977
Condensed Consolidated Statement Cash Flows	Condensed Consolidated Statement of Cash Flows For the three months ended March 31, 2018 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ 5,815 $ 1,800 $ (2,076 ) $ — $ 5,539 INVESTING ACTIVITIES Purchases of Property, Plant and Equipment (342 ) (229 ) (2,909 ) — (3,480 ) Proceeds from Disposals of Property, Plant and Equipment 11 — 5 — 16 Proceeds from Principal Payments Received on Long-Term Note Receivable — — 167 — 167 Purchase of Intangible Asset (1,000 ) — — — (1,000 ) Loan (Payments) Borrowings from Subsidiaries (1,294 ) — — 1,294 — Net Cash Used in Investing Activities (2,625 ) (229 ) (2,737 ) 1,294 (4,297 ) FINANCING ACTIVITIES Loan Borrowings (Payments) from Parent — — 1,294 (1,294 ) — Payments of Long-Term Debt (4,000 ) — (37 ) — (4,037 ) Change in Capital Lease Obligations — — 81 — 81 Proceeds from Issuances of Common Stock 794 — — — 794 Dividends Paid (3,758 ) — — — (3,758 ) Net Cash (Used in) Provided by Financing Activities (6,964 ) — 1,338 (1,294 ) (6,920 ) Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash 72 — 1,201 — 1,273 Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash (3,702 ) 1,571 (2,274 ) — (4,405 ) Cash, Cash Equivalents and Restricted Cash at Beginning of Period 18,469 507 40,075 — 59,051 Cash, Cash Equivalents and Restricted Cash at End of Period $ 14,767 $ 2,078 $ 37,801 $ — $ 54,646 Condensed Consolidated Statement of Cash Flows For the three months ended March 31, 2017 (in thousands) Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Tennant Company OPERATING ACTIVITIES Net Cash (Used in) Provided by Operating Activities $ (14,063 ) $ 438 $ 2,516 $ — $ (11,109 ) INVESTING ACTIVITIES Purchases of Property, Plant and Equipment (1,188 ) — (3,485 ) — (4,673 ) Proceeds from Disposals of Property, Plant and Equipment 6 — 47 — 53 Issuance of Long-Term Note Receivable — — (1,500 ) — (1,500 ) Acquisition of Business, Net of Cash Acquired (304 ) — — — (304 ) Purchase of Intangible Asset (2,500 ) — — — (2,500 ) Change in Investments in Subsidiaries (3,500 ) — — 3,500 — Net Cash Used in Investing Activities (7,486 ) — (4,938 ) 3,500 (8,924 ) FINANCING ACTIVITIES Change in Subsidiary Equity — — 3,500 (3,500 ) — Proceeds from Issuance of Long-Term Debt 20,000 — — — 20,000 Payments of Long-Term Debt (11,143 ) — (8 ) — (11,151 ) Proceeds from Issuance of Common Stock 1,655 — — — 1,655 Dividends Paid (3,722 ) — — — (3,722 ) Net Cash Provided by Financing Activities 6,790 — 3,492 (3,500 ) 6,782 Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash (102 ) — 432 — 330 Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash (14,861 ) 438 1,502 — (12,921 ) Cash, Cash Equivalents and Restricted Cash at Beginning of Period 38,484 226 19,840 — 58,550 Cash, Cash Equivalents and Restricted Cash at End of Period $ 23,623 $ 664 $ 21,342 $ — $ 45,629

Newly Adopted Accounting Pron41

Newly Adopted Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Net Receivables	$ 212,265	$ 209,516
Total Current Assets	434,680	423,115
Total Assets	1,015,902	993,977
LIABILITIES
Other Current Liabilities	70,293	69,447
Total Current Liabilities	241,371	236,507
Total Liabilities	708,531	$ 695,503
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
ASSETS
Net Receivables	1,061
Total Current Assets	1,061
Total Assets	1,061
LIABILITIES
Other Current Liabilities	1,061
Total Current Liabilities	1,061
Total Liabilities	1,061
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
ASSETS
Net Receivables	211,204
Total Current Assets	433,619
Total Assets	1,014,841
LIABILITIES
Other Current Liabilities	69,232
Total Current Liabilities	240,310
Total Liabilities	$ 707,470

Newly Adopted Accounting Pron42

Newly Adopted Accounting Pronouncements (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and Cash Equivalents		$ 54,001		$ 58,398
Restricted Cash		645		653
Total Cash, Cash Equivalents and Restricted Cash at end of period shown in the Condensed Consolidated Statement of Cash Flows	$ 45,629	$ 54,646		$ 59,051	$ 58,550
Selling and Administrative Expense | Scenario, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net benefit cost (credit)	53
Other (Expense) Income, Net | Scenario, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net benefit cost (credit)	$ 53
Accounting Standards Update 2016-16
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets			$ 94
ASU 2016-16, Increase (Decrease) in long-term deferred charge			1,281
Deferred Tax Asset, Intra-entity Transfer, Asset Other than Inventory			1,187
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets			$ 1,263

Revenue from Contracts with C43

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Net Sales	$ 272,847	$ 191,059
Sales Direct to Consumer
Disaggregation of Revenue [Line Items]
Net Sales	178,710	143,623
Sales to Distributors
Disaggregation of Revenue [Line Items]
Net Sales	94,137	47,436
Equipment
Disaggregation of Revenue [Line Items]
Net Sales	172,074	113,341
Parts and Consumables
Disaggregation of Revenue [Line Items]
Net Sales	57,441	42,803
Specialty Surface Coatings
Disaggregation of Revenue [Line Items]
Net Sales	36,877	28,234
Services and Other
Disaggregation of Revenue [Line Items]
Net Sales	6,455	6,681
Americas
Disaggregation of Revenue [Line Items]
Net Sales	162,638	142,770
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Net Sales	88,816	33,276
Asia Pacific
Disaggregation of Revenue [Line Items]
Net Sales	$ 21,393	$ 15,013

Revenue from Contracts with C44

Revenue from Contracts with Customers (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Volume-based rebates and other promotions contract liability	$ 7,925	$ 13,466
Contract with Customer, Liability, Current	4,732	4,468
Contract with Customer, Liability, Noncurrent	2,669	$ 2,483
Contract with Customer, Liability, Revenue Recognized	3,295
Contract With Customer, Liability, Increase for Additional Performance Obligations	3,660
Revenue from Contract with Customer, Future Performance Obligations Satisfied, Fiscal Year Maturity [Abstract]
Remaining 2,018	3,799
2,019	1,835
2,020	1,115
2,021	416
2,022	230
Thereafter	6
Total	$ 7,401

Management Actions (Details)

Management Actions (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Approximate time anticipated savings will offset the restructuring charge		1 year	1 year
Restructuring Reserve [Roll Forward]
Restructuring Charges, net of noncash expenses				$ 9,558
Restructuring Reserve beginning balance	$ 3,436
Cash Payments	(714)			(6,312)
Foreign currency adjustments	104			190
Restructuring Reserve ending balance	$ 2,826	$ 3,436		$ 3,436
Selling and Administrative Expense
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		$ 2,501	$ 8,018
Other associated restructuring charges			$ 961

Acquisition (Details 1)

Acquisition (Details 1) - USD ($)	Apr. 06, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Amortization of Intangible Assets		$ 5,838,000	$ 244,000
Trade Names
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years		10 years
Customer Lists
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		15 years		15 years
Technology
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		11 years		11 years
Senior Secured Credit Facility
Business Acquisition [Line Items]
Long-term Line of Credit, Noncurrent	$ 420,000,000
IP Cleaning S.p.A
Business Acquisition [Line Items]
Business Acquisition, Name of Acquired Entity	IP Cleaning S.p.A. and its subsidiaries ("IPC Group")
Business Combination, Consideration Transferred	$ 353,769,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Cash Equivalents	8,804,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 0
Amortization of Intangible Assets		$ 5,537,000
IP Cleaning S.p.A | Trade Names
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
IP Cleaning S.p.A | Customer Lists
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years
IP Cleaning S.p.A | Technology
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years

Acquisition (Details 2)

Acquisition (Details 2) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Apr. 06, 2017
LIABILITIES
Goodwill	$ 196,165	$ 186,044
IP Cleaning S.p.A
ASSETS
Receivables			$ 39,984
Inventories			46,442
Other Current Assets			7,456
Assets Held for Sale			2,247
Property, Plant and Equipment			63,890
Intangible Assets Subject to Amortization:			159,445
Other Assets			2,000
Total Identifiable Assets Acquired			321,464
LIABILITIES
Accounts Payable			32,227
Accrued Expenses			18,130
Deferred Income Taxes			56,950
Other Liabilities			10,964
Total Identifiable Liabilities Assumed			118,271
Net Identifiable Assets Acquired			203,193
Noncontrolling Interest			(1,896)
Goodwill			152,472
Total Purchase Price, net of Cash Acquired			353,769
Trade Names | IP Cleaning S.p.A
ASSETS
Intangible Assets Subject to Amortization:			26,753
Customer Lists | IP Cleaning S.p.A
ASSETS
Intangible Assets Subject to Amortization:			123,061
Technology | IP Cleaning S.p.A
ASSETS
Intangible Assets Subject to Amortization:			$ 9,631

Acquisition (Details 3)

Acquisition (Details 3) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Sales
As reported	$ 272,847	$ 191,059
Net Loss Attributable to Tennant Company
As reported	$ 3,274	$ (3,957)
Net Loss Attributable to Tennant Company per Share
As reported	$ 0.18	$ (0.22)
IP Cleaning S.p.A
Net Sales
Pro forma		$ 245,120
Net Loss Attributable to Tennant Company
Pro forma		$ (2,426)
Net Loss Attributable to Tennant Company per Share
Pro forma		$ (0.14)

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventories carried at LIFO:
Finished goods	$ 47,131	$ 43,439
Raw materials, production parts and work-in-process	26,375	23,694
LIFO reserve	(28,788)	(28,429)
Total LIFO inventories	44,718	38,704
Inventories carried at FIFO:
Finished goods	55,747	54,161
Raw materials, production parts and work-in-process	39,825	34,829
Total FIFO inventories	95,572	88,990
Total inventories	$ 140,290	$ 127,694

Goodwill and Intangible Asset50

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Goodwill, Gross
Balance, beginning of period	$ 227,224
Purchase accounting adjustments	4,627
Foreign currency fluctuations	7,047
Balance, end of period	238,898		$ 227,224
Accumulated Impairment Losses
Balance, beginning of period	(41,180)
Foreign currency fluctuations	(1,553)
Balance, end of period	(42,733)		(41,180)
Goodwill, Net
Balance, beginning of period	186,044
Purchase accounting adjustments	4,627
Foreign currency fluctuations	5,494
Balance, end of period	196,165		186,044
Acquired Finite-lived Intangible Assets
Original cost	202,808		195,912
Accumulated amortization	(30,511)		(23,565)
Carrying value	172,297		172,347
Purchase of Intangible Assets	1,000	$ 2,500
Amortization expense	5,838	$ 244
Estimated aggregate amortization expense of Intangible Assets
Remaining 2,018			17,115
2,019	22,388
2,020	20,853
2,021	19,170
2,022	16,928
Thereafter	75,843
Total	172,297
Customer Lists
Acquired Finite-lived Intangible Assets
Original cost	154,096		149,355
Accumulated amortization	(23,303)		(17,870)
Carrying value	$ 130,793		$ 131,485
Weighted-average original life (in years)	15 years		15 years
Trade Names
Acquired Finite-lived Intangible Assets
Original cost	$ 32,818		$ 31,968
Accumulated amortization	(3,293)		(2,436)
Carrying value	$ 29,525		$ 29,532
Weighted-average original life (in years)	10 years		10 years
Technology
Acquired Finite-lived Intangible Assets
Original cost	$ 15,894		$ 14,589
Accumulated amortization	(3,915)		(3,259)
Carrying value	$ 11,979		$ 11,330
Weighted-average original life (in years)	11 years		11 years

Debt (Details 1)

Debt (Details 1)	3 Months Ended
	Mar. 31, 2018USD ($)
Line of Credit Facility
Letters of Credit Outstanding, Amount	$ 4,923,000
Line of Credit Facility, Commitment Fee Amount	$ 150,000
Debt, Weighted Average Interest Rate	5.20%
Debt, Weighted Average Interest Rate, net of Currency Swap Contract	4.30%
Revolving Credit Facility
Line of Credit Facility
Outstanding Borrowings	$ 20,000,000
Debt Instrument, Unused Borrowing Capacity, Amount	180,000,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	5,000,000
Long-term Debt, Additional Repayments of Principal in Next Twelve Months	25,000,000
Long-term Debt, Current Maturities	$ 30,000,000
Revolving Credit Facility | JPMorgan, 2017 Credit Agreement
Line of Credit Facility
Debt Instrument, Covenant, Indebtedness to Adjusted EBITDA Ratio, Maximum	4
Debt Instrument, Covenant, Adjusted EBITDA to Interest Expense Ratio, Maximum	3.50
Debt Instrument, Covenant, Senior Secured Net Indebtedness to Adjusted EBITDA Ratio, Maximum	3.50
Debt Instrument, Covenant, Net Leverage Ratio, Minimum	3
Line of Credit
Line of Credit Facility
Outstanding Borrowings	$ 56,000,000
Letter of Credit
Line of Credit Facility
Debt Instrument, Unused Borrowing Capacity, Amount	$ 175,077,000
Minimum | Revolving Credit Facility | JPMorgan, 2017 Credit Agreement
Line of Credit Facility
Debt Instrument, Covenant, Repayment of Debt, Percentage of Excess Cash Flow	25.00%
Maximum | Revolving Credit Facility | JPMorgan, 2017 Credit Agreement
Line of Credit Facility
Debt Instrument, Covenant, Repayment of Debt, Percentage of Excess Cash Flow	50.00%

Debt (Details 2)

Debt (Details 2) - USD ($) $ in Thousands	Mar. 31, 2018		Dec. 31, 2017
Debt Instrument
Total Debt	$ 379,416		$ 383,279
Debt Instrument, Unamortized Debt Issuance Costs, Noncurrent, net	(6,094)		(6,440)
Capital Lease Obligations, Current	(1,442)	[1]	(1,470)
Long-Term Portion	342,420		345,956
Current Portion of Long-Term Debt	30,902		30,883
Line of Credit
Debt Instrument
Debt, Current, Net Of Unamortized Debt Issuance Costs	(29,460)	[1]	(29,413)
Current Portion of Long-Term Debt	30,000
Debt Instrument, Unamortized Debt Issuance Costs, Current Portion, net	540
Capital Lease Obligations
Debt Instrument
Total Debt	3,416		3,279
JPMorgan, 2017 Credit Agreement | Line of Credit
Debt Instrument
Total Debt	76,000		80,000
Bonds
Debt Instrument
Total Debt	$ 300,000		$ 300,000
[1]	(1) Current maturities of long-term debt include $30,000 of current maturities, less $540 of unamortized debt issuance costs, under our 2017 Credit Agreement and $1,442 of current maturities of capital lease obligations.

Warranty (Details)

Warranty (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Product Warranties Disclosures [Abstract]
Machine warranty, range minimum (in years)	1 year
Machine warranty, range maximum (in years)	4 years
Period of time following a sale the majority of claims are paid, range minimum (in years)	6 months
Period of time following a sale the majority of claims are paid, range maximum (in years)	9 months
Changes in warranty reserves
Beginning balance	$ 12,676	$ 10,960
Additions charged to expense	3,334	2,072
Foreign currency fluctuations	86	50
Claims paid	(3,288)	(2,800)
Ending balance	$ 12,808	$ 10,282

Derivatives (Details 1)

Derivatives (Details 1) $ in Thousands		1 Months Ended	3 Months Ended
		Apr. 30, 2022EUR (€)	Mar. 31, 2018EUR (€)	Mar. 31, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative, Term of Contract			1 year	1 year
Cash Flow Hedge Loss to be Reclassified within Twelve Months				$ 1,716
Derivatives designated as hedging instruments | Foreign currency option contracts
Derivatives, Fair Value [Line Items]
Notional Amount					$ 8,410		$ 8,619
Fair Value Asset Derivatives	[1]				160		86
Fair Value Liability Derivatives	[1]				0		0
Derivatives designated as hedging instruments | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Notional Amount					3,071		2,928
Fair Value Asset Derivatives	[1]				5,590		7,218
Fair Value Liability Derivatives	[1]				41,224		34,961
Derivatives designated as hedging instruments | Cross currency swap
Derivatives, Fair Value [Line Items]
Notional Amount | €			€ 179,400,000			€ 181,200,000
Aggregate scheduled interest payments over the course of the loan and related swaps | €			€ 29,400,000
Derivatives designated as hedging instruments | Cross currency swap | Scenario, Forecast
Derivatives, Fair Value [Line Items]
Scheduled maturity and principal payment of the loan and related swaps | €		€ 150,000,000
Derivatives not designated as hedging instruments | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Notional Amount					56,269		60,858
Fair Value Asset Derivatives	[1]				515		442
Fair Value Liability Derivatives	[1]				$ 1,364		$ 425
[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 Condensed 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 Condensed Consolidated Balance Sheets. Amounts included in our Condensed Consolidated Balance Sheets are recorded net where a right of offset exists with the same derivative counterparty.

Derivatives (Details 2)

Derivatives (Details 2) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Foreign currency option contracts | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Net loss recognized in earnings	[1]	$ 0	$ (1,132)
Foreign currency option contracts | Cash Flow Hedge
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in Other Comprehensive Income (Loss), net of tax	[2]	16	(90)
Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Sales		(41)	42
Net gain reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Interest Income		0
Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Foreign Currency Transaction Losses		0
Net (loss) gain recognized in earnings	[3]	7	(1)
Foreign currency forward contracts | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Net loss recognized in earnings	[1]	(1,378)	(1,368)
Foreign currency forward contracts | Cash Flow Hedge
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in Other Comprehensive Income (Loss), net of tax	[2]	(5,697)	(17)
Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Sales		(14)	19
Net gain reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Interest Income		391
Net loss reclassified from Accumulated Other Comprehensive Loss into earnings, net of tax, effective portion to Net Foreign Currency Transaction Losses		(3,927)
Net (loss) gain recognized in earnings	[3]	$ 3	$ 2
[1]	Classified in Net Foreign Currency Transaction Losses.
[2]	Net change in the fair value of the effective portion classified in Other Comprehensive Income (Loss).
[3]	Ineffective portion and amount excluded from effectiveness testing classified in Net Foreign Currency Transaction Losses

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Level 1
Assets:
Total Assets	$ 0	$ 0
Liabilities:
Total Liabilities	0	0
Level 1 | Foreign currency forward exchange contracts
Assets:
Foreign currency contract, asset fair value	0	0
Liabilities:
Foreign currency contract, liability fair value	0	0
Level 1 | Foreign currency option contracts
Assets:
Foreign currency contract, asset fair value	0	0
Level 2
Assets:
Total Assets	6,265	7,746
Liabilities:
Total Liabilities	42,588	35,386
Level 2 | Foreign currency forward exchange contracts
Assets:
Foreign currency contract, asset fair value	6,105	7,660
Liabilities:
Foreign currency contract, liability fair value	42,588	35,386
Level 2 | Foreign currency option contracts
Assets:
Foreign currency contract, asset fair value	160	86
Level 3
Assets:
Total Assets		0
Liabilities:
Total Liabilities		0
Level 3 | Foreign currency forward exchange contracts
Assets:
Foreign currency contract, asset fair value		0
Liabilities:
Foreign currency contract, liability fair value		0
Level 3 | Foreign currency option contracts
Assets:
Foreign currency contract, asset fair value		0
Fair Value
Assets:
Total Assets	6,265	7,746
Liabilities:
Total Liabilities	42,588	35,386
Fair Value | Foreign currency forward exchange contracts
Assets:
Foreign currency contract, asset fair value	6,105	7,660
Liabilities:
Foreign currency contract, liability fair value	42,588	35,386
Fair Value | Foreign currency option contracts
Assets:
Foreign currency contract, asset fair value	$ 160	$ 86

Retirement Benefit Plans (Detai

Retirement Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans
Settlement charge	$ 0	$ 0
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Plan contributions	114
Pension Plans | Domestic Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	0	0
Interest cost	11	390
Expected return on plan assets	0	(585)
Amortization of net actuarial loss	13	10
Amortization of prior service cost	0	0
Foreign currency	0	0
Net periodic cost (benefit)	24	(185)
Settlement charge	50
Net benefit cost (credit)	74	(185)
Pension Plans | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	37	24
Interest cost	71	90
Expected return on plan assets	(109)	(96)
Amortization of net actuarial loss	0	0
Amortization of prior service cost	74	47
Foreign currency	(71)	(5)
Net periodic cost (benefit)	2	60
Net benefit cost (credit)	2	60
Postretirement Medical Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans
Plan contributions	269
Service cost	14	20
Interest cost	75	91
Expected return on plan assets	0	0
Amortization of net actuarial loss	0	0
Amortization of prior service cost	0	0
Foreign currency	0	0
Net periodic cost (benefit)	89	111
Net benefit cost (credit)	$ 89	$ 111

Commitments and Contingencies58

Commitments and Contingencies (Details) $ in Thousands	Mar. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Aggregate residual value at lease expiration for vehicle leases	$ 13,721
Guaranteed aggregate residual value at lease expiration for vehicle leases	11,228
Liability for the estimated end of term loss related to residual value guarantee	$ 362

Accumulated Other Comprehensi59

Accumulated Other Comprehensive Loss (Details 1) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Foreign currency translation adjustments	$ (7,414)	$ (15,778)
Pension and retiree medical benefits	(1,679)	(1,610)
Cash flow hedge	(8,151)	(4,935)
Total Accumulated Other Comprehensive Loss	$ (17,244)	$ (22,323)

Accumulated Other Comprehensi60

Accumulated Other Comprehensive Loss (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Components of Other Comprehensive Loss
December 31, 2017	$ (22,323)
Other comprehensive income (loss) before reclassifications	2,702
Amounts reclassified from Accumulated Other Comprehensive Loss	3,640
Adjustments to Accumulated Other Comprehensive Loss for disproportionate income tax effects recognized from the adoption of ASU 2018-02	(1,263)
Total Other Comprehensive Income, net of tax	5,079	$ 2,346
March 31, 2018	(17,244)
Foreign Currency Translation Adjustments
Components of Other Comprehensive Loss
December 31, 2017	(15,778)
Other comprehensive income (loss) before reclassifications	8,364
Amounts reclassified from Accumulated Other Comprehensive Loss	0
Adjustments to Accumulated Other Comprehensive Loss for disproportionate income tax effects recognized from the adoption of ASU 2018-02	0
Total Other Comprehensive Income, net of tax	8,364
March 31, 2018	(7,414)
Pension and Post Retirement Benefits
Components of Other Comprehensive Loss
December 31, 2017	(1,610)
Other comprehensive income (loss) before reclassifications	19
Amounts reclassified from Accumulated Other Comprehensive Loss	49
Adjustments to Accumulated Other Comprehensive Loss for disproportionate income tax effects recognized from the adoption of ASU 2018-02	(137)
Total Other Comprehensive Income, net of tax	(69)
March 31, 2018	(1,679)
Cash Flow Hedge
Components of Other Comprehensive Loss
December 31, 2017	(4,935)
Other comprehensive income (loss) before reclassifications	(5,681)
Amounts reclassified from Accumulated Other Comprehensive Loss	3,591
Adjustments to Accumulated Other Comprehensive Loss for disproportionate income tax effects recognized from the adoption of ASU 2018-02	(1,126)
Total Other Comprehensive Income, net of tax	(3,216)
March 31, 2018	$ (8,151)

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Liability for unrecognized tax benefits	$ 7,032
Unrecognized tax benefits, income tax penalties and interest accrued	567
Unrecognized tax benefits that would impact the effective tax rate	6,863
Income Tax Expense (Benefit)	$ 1,077	$ (584)
Effective Income Tax Rate Reconciliation, Percent	24.60%
Federal Statutory Income Tax Rate, Historical			35.00%
Tax Cuts and Jobs Act of 2017 Corporate Federal Tax Rate	21.00%
Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2,014
Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2,016

Share-Based Compensation (Detai

Share-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award
Allocated Share-based Compensation Expense	$ 2,748	$ 2,573
Excess Tax Benefit on Stock Plans	$ 27	402
Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award
Shares granted	16,377
Weighted average grant date fair value, in dollars per share	$ 67.70
Vesting period of new awards granted	3 years
Fair value of shares vested	$ 794	$ 625

Earnings (Loss) Attributable 63

Earnings (Loss) Attributable to Tennant Company Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net Earnings (Loss) Attributable to Tennant Company	$ 3,274	$ (3,957)
Denominator:
Basic - Weighted Average Shares Outstanding	17,790,989	17,596,546
Effect of dilutive securities:
Share-based compensation plans	454,370	0
Diluted - Weighted Average Shares Outstanding	18,245,359	17,596,546
Basic Earnings (Loss) per Share	$ 0.18	$ (0.22)
Diluted Earnings (Loss) per Share	$ 0.18	$ (0.22)
Anti-dilutive securities excluded from earnings per share calculation	291,622	663,306

Segment Reporting (Details)

Segment Reporting (Details)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Number of operating segments	4
Number of reportable segments	1

Separate Financial Informatio65

Separate Financial Information of Guarantor Subsidiaries Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Sales	$ 272,847	$ 191,059
Cost of Sales	162,210	111,323
Gross Profit	110,637	79,736
Operating Expense:
Research and Development Expense	7,996	8,446
Selling and Administrative Expense	92,269	73,956
Total Operating Expense	100,265	82,402
Profit (Loss) from Operations	10,372	(2,666)
Other Income (Expense):
Equity in Earnings of Affiliates	0	0
Interest (Expense) Income, Net	(4,996)	(710)
Intercompany Interest Income (Expense)	0	0
Net Foreign Currency Transaction Gains (Losses)	(749)	(1,197)
Other (Expense) Income, Net	(250)	32
Total Other Expense, Net	(5,995)	(1,875)
Profit (Loss) Before Income Taxes	4,377	(4,541)
Income Tax Expense (Benefit)	1,077	(584)
Net Earnings (Loss) Including Noncontrolling Interest	3,300	(3,957)
Net Earnings Attributable to Noncontrolling Interest	26	0
Net Earnings (Loss) Attributable to Tennant Company	3,274	(3,957)
Eliminations
Net Sales	(129,671)	(122,560)
Cost of Sales	(128,391)	(121,588)
Gross Profit	(1,280)	(972)
Operating Expense:
Research and Development Expense	0	0
Selling and Administrative Expense	0	0
Total Operating Expense	0	0
Profit (Loss) from Operations	(1,280)	(972)
Other Income (Expense):
Equity in Earnings of Affiliates	(7,528)	(1,979)
Interest (Expense) Income, Net	(9)	0
Intercompany Interest Income (Expense)	0	0
Net Foreign Currency Transaction Gains (Losses)	0	0
Other (Expense) Income, Net	(24)	0
Total Other Expense, Net	(7,561)	(1,979)
Profit (Loss) Before Income Taxes	(8,841)	(2,951)
Income Tax Expense (Benefit)	(2,488)	(547)
Net Earnings (Loss) Including Noncontrolling Interest	(6,353)	(2,404)
Net Earnings Attributable to Noncontrolling Interest	(26)
Net Earnings (Loss) Attributable to Tennant Company	(6,327)	(2,404)
Parent
Net Sales	113,690	105,705
Cost of Sales	77,231	71,597
Gross Profit	36,459	34,108
Operating Expense:
Research and Development Expense	6,107	7,946
Selling and Administrative Expense	29,088	32,064
Total Operating Expense	35,195	40,010
Profit (Loss) from Operations	1,264	(5,902)
Other Income (Expense):
Equity in Earnings of Affiliates	4,375	1,650
Interest (Expense) Income, Net	(5,108)	(764)
Intercompany Interest Income (Expense)	3,725	1,469
Net Foreign Currency Transaction Gains (Losses)	354	(837)
Other (Expense) Income, Net	(233)	(157)
Total Other Expense, Net	3,113	1,361
Profit (Loss) Before Income Taxes	4,377	(4,541)
Income Tax Expense (Benefit)	1,077	(584)
Net Earnings (Loss) Including Noncontrolling Interest	3,300	(3,957)
Net Earnings Attributable to Noncontrolling Interest	26
Net Earnings (Loss) Attributable to Tennant Company	3,274	(3,957)
Guarantor Subsidiaries
Net Sales	148,433	139,080
Cost of Sales	123,125	112,732
Gross Profit	25,308	26,348
Operating Expense:
Research and Development Expense	204	87
Selling and Administrative Expense	19,717	20,072
Total Operating Expense	19,921	20,159
Profit (Loss) from Operations	5,387	6,189
Other Income (Expense):
Equity in Earnings of Affiliates	506	329
Interest (Expense) Income, Net	0	0
Intercompany Interest Income (Expense)	(1,422)	(1,428)
Net Foreign Currency Transaction Gains (Losses)	(1)	2
Other (Expense) Income, Net	(591)	(75)
Total Other Expense, Net	(1,508)	(1,172)
Profit (Loss) Before Income Taxes	3,879	5,017
Income Tax Expense (Benefit)	899	1,571
Net Earnings (Loss) Including Noncontrolling Interest	2,980	3,446
Net Earnings Attributable to Noncontrolling Interest	0
Net Earnings (Loss) Attributable to Tennant Company	2,980	3,446
Non-Guarantor Subsidiaries
Net Sales	140,395	68,834
Cost of Sales	90,245	48,582
Gross Profit	50,150	20,252
Operating Expense:
Research and Development Expense	1,685	413
Selling and Administrative Expense	43,464	21,820
Total Operating Expense	45,149	22,233
Profit (Loss) from Operations	5,001	(1,981)
Other Income (Expense):
Equity in Earnings of Affiliates	2,647	0
Interest (Expense) Income, Net	121	54
Intercompany Interest Income (Expense)	(2,303)	(41)
Net Foreign Currency Transaction Gains (Losses)	(1,102)	(362)
Other (Expense) Income, Net	598	264
Total Other Expense, Net	(39)	(85)
Profit (Loss) Before Income Taxes	4,962	(2,066)
Income Tax Expense (Benefit)	1,589	(1,024)
Net Earnings (Loss) Including Noncontrolling Interest	3,373	(1,042)
Net Earnings Attributable to Noncontrolling Interest	26
Net Earnings (Loss) Attributable to Tennant Company	$ 3,347	$ (1,042)

Separate Financial Informatio66

Separate Financial Information of Guarantor Subsidiaries Condensed Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Earnings (Loss) Including Noncontrolling Interest	$ 3,300	$ (3,957)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	8,381	2,400
Pension and retiree medical benefits	82	10
Cash flow hedge	(2,715)	(73)
Income Taxes:
Foreign currency translation adjustments	(17)	0
Pension and retiree medical benefits	(151)	(18)
Cash flow hedge	(501)	27
Total Other Comprehensive Income, net of tax	5,079	2,346
Total Comprehensive Income (Loss) Including Noncontrolling Interest	8,379	(1,611)
Comprehensive Income Attributable to Noncontrolling Interest	26	0
Comprehensive Income (Loss) Attributable to Tennant Company	8,353	(1,611)
Eliminations
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Earnings (Loss) Including Noncontrolling Interest	(6,353)	(2,404)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	(7,689)	20,596
Pension and retiree medical benefits	(19)	0
Cash flow hedge	0	0
Income Taxes:
Foreign currency translation adjustments	16	0
Pension and retiree medical benefits	0	14
Cash flow hedge	0	0
Total Other Comprehensive Income, net of tax	(7,692)	20,610
Total Comprehensive Income (Loss) Including Noncontrolling Interest	(14,045)
Comprehensive Income Attributable to Noncontrolling Interest	(26)
Comprehensive Income (Loss) Attributable to Tennant Company	(14,019)	18,206
Parent
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Earnings (Loss) Including Noncontrolling Interest	3,300	(3,957)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	8,381	2,400
Pension and retiree medical benefits	82	10
Cash flow hedge	(2,715)	(73)
Income Taxes:
Foreign currency translation adjustments	(17)	0
Pension and retiree medical benefits	(151)	(18)
Cash flow hedge	(501)	27
Total Other Comprehensive Income, net of tax	5,079	2,346
Total Comprehensive Income (Loss) Including Noncontrolling Interest	8,379
Comprehensive Income Attributable to Noncontrolling Interest	26
Comprehensive Income (Loss) Attributable to Tennant Company	8,353	(1,611)
Guarantor Subsidiaries
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Earnings (Loss) Including Noncontrolling Interest	2,980	3,446
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	(164)	101
Pension and retiree medical benefits	0	0
Cash flow hedge	0	0
Income Taxes:
Foreign currency translation adjustments	0	0
Pension and retiree medical benefits	0	0
Cash flow hedge	0	0
Total Other Comprehensive Income, net of tax	(164)	101
Total Comprehensive Income (Loss) Including Noncontrolling Interest	2,816
Comprehensive Income Attributable to Noncontrolling Interest	0
Comprehensive Income (Loss) Attributable to Tennant Company	2,816	3,547
Non-Guarantor Subsidiaries
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Earnings (Loss) Including Noncontrolling Interest	3,373	(1,042)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	7,853	(20,697)
Pension and retiree medical benefits	19	0
Cash flow hedge	0	0
Income Taxes:
Foreign currency translation adjustments	(16)	0
Pension and retiree medical benefits	0	(14)
Cash flow hedge	0	0
Total Other Comprehensive Income, net of tax	7,856	(20,711)
Total Comprehensive Income (Loss) Including Noncontrolling Interest	11,229
Comprehensive Income Attributable to Noncontrolling Interest	26
Comprehensive Income (Loss) Attributable to Tennant Company	$ 11,203	$ (21,753)

Separate Financial Informatio67

Separate Financial Information of Guarantor Subsidiaries Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 54,001	$ 58,398
Restricted Cash	645	653
Net Receivables	212,265	209,516
Intercompany Receivables	0	0
Inventories	140,290	127,694
Prepaid Expenses	21,537	19,351
Other Current Assets	5,942	7,503
Total Current Assets	434,680	423,115
Property, Plant and Equipment	387,130	382,768
Accumulated Depreciation	(209,204)	(202,750)
Property, Plant and Equipment, Net	177,926	180,018
Deferred Income Taxes	14,832	11,134
Investment in Affiliates	0	0
Intercompany Loans	0	0
Goodwill	196,165	186,044
Intangible Assets, Net	172,297	172,347
Other Assets	20,002	21,319
Total Assets	1,015,902	993,977
Current Liabilities:
Current Portion of Long-Term Debt	30,902	30,883
Accounts Payable	102,702	96,082
Intercompany Payables	0	0
Employee Compensation and Benefits	34,674	37,257
Income Taxes Payable	2,800	2,838
Other Current Liabilities	70,293	69,447
Total Current Liabilities	241,371	236,507
Long-Term Liabilities:
Long-Term Debt	342,420	345,956
Intercompany Loans	0	0
Employee-Related Benefits	23,394	23,867
Deferred Income Taxes	53,412	53,225
Other Liabilities	47,934	35,948
Total Long-Term Liabilities	467,160	458,996
Total Liabilities	708,531	695,503
Common Stock	6,717	6,705
Additional Paid-In Capital	18,295	15,089
Retained Earnings	297,717	297,032
Accumulated Other Comprehensive Loss	(17,244)	(22,323)
Total Tennant Company Shareholders' Equity	305,485	296,503
Noncontrolling Interest	1,886	1,971
Total Equity	307,371	298,474
Total Liabilities and Total Equity	1,015,902	993,977
Eliminations
Current Assets:
Cash and Cash Equivalents	0	0
Restricted Cash	0	0
Net Receivables	0	0
Intercompany Receivables	(185,740)	(187,222)
Inventories	(10,234)	(8,993)
Prepaid Expenses	0	0
Other Current Assets	0	0
Total Current Assets	(195,974)	(196,215)
Property, Plant and Equipment	0	0
Accumulated Depreciation	0	0
Property, Plant and Equipment, Net	0	0
Deferred Income Taxes	0	0
Investment in Affiliates	(442,331)	(424,570)
Intercompany Loans	(318,595)	(309,805)
Goodwill	0	0
Intangible Assets, Net	0	0
Other Assets	0	0
Total Assets	(956,900)	(930,590)
Current Liabilities:
Current Portion of Long-Term Debt	0	0
Accounts Payable	0	0
Intercompany Payables	(185,740)	(187,222)
Employee Compensation and Benefits	0	0
Income Taxes Payable	0	0
Other Current Liabilities	0	0
Total Current Liabilities	(185,740)	(187,222)
Long-Term Liabilities:
Long-Term Debt	0	0
Intercompany Loans	(318,595)	(309,805)
Employee-Related Benefits	0	0
Deferred Income Taxes	0	0
Other Liabilities	0	0
Total Long-Term Liabilities	(318,595)	(309,805)
Total Liabilities	(504,335)	(497,027)
Common Stock	(11,131)	(11,131)
Additional Paid-In Capital	(462,011)	(456,943)
Retained Earnings	(8,905)	(2,578)
Accumulated Other Comprehensive Loss	31,368	39,060
Total Tennant Company Shareholders' Equity	(450,679)	(431,592)
Noncontrolling Interest	(1,886)	(1,971)
Total Equity	(452,565)	(433,563)
Total Liabilities and Total Equity	(956,900)	(930,590)
Parent
Current Assets:
Cash and Cash Equivalents	14,767	18,469
Restricted Cash	0	0
Net Receivables	605	683
Intercompany Receivables	54,461	53,444
Inventories	32,287	29,450
Prepaid Expenses	11,781	8,774
Other Current Assets	3,864	4,030
Total Current Assets	117,765	114,850
Property, Plant and Equipment	224,426	225,064
Accumulated Depreciation	(148,975)	(146,320)
Property, Plant and Equipment, Net	75,451	78,744
Deferred Income Taxes	2,178	1,308
Investment in Affiliates	408,509	392,486
Intercompany Loans	314,905	304,822
Goodwill	12,869	12,869
Intangible Assets, Net	2,974	2,105
Other Assets	9,083	10,363
Total Assets	943,734	917,547
Current Liabilities:
Current Portion of Long-Term Debt	29,460	29,413
Accounts Payable	42,583	39,927
Intercompany Payables	131,279	133,778
Employee Compensation and Benefits	8,976	8,311
Income Taxes Payable	341	366
Other Current Liabilities	27,447	20,183
Total Current Liabilities	240,086	231,978
Long-Term Liabilities:
Long-Term Debt	340,447	344,147
Intercompany Loans	3,690	0
Employee-Related Benefits	12,576	11,160
Deferred Income Taxes	0	0
Other Liabilities	39,564	31,788
Total Long-Term Liabilities	396,277	387,095
Total Liabilities	636,363	619,073
Common Stock	6,717	6,705
Additional Paid-In Capital	18,295	15,089
Retained Earnings	297,717	297,032
Accumulated Other Comprehensive Loss	(17,244)	(22,323)
Total Tennant Company Shareholders' Equity	305,485	296,503
Noncontrolling Interest	1,886	1,971
Total Equity	307,371	298,474
Total Liabilities and Total Equity	943,734	917,547
Guarantor Subsidiaries
Current Assets:
Cash and Cash Equivalents	2,078	507
Restricted Cash	0	0
Net Receivables	85,079	88,629
Intercompany Receivables	131,279	133,778
Inventories	16,076	12,695
Prepaid Expenses	275	1,172
Other Current Assets	404	0
Total Current Assets	235,191	236,781
Property, Plant and Equipment	12,738	12,155
Accumulated Depreciation	(6,502)	(6,333)
Property, Plant and Equipment, Net	6,236	5,822
Deferred Income Taxes	3,233	2,669
Investment in Affiliates	11,562	11,273
Intercompany Loans	0	0
Goodwill	1,739	1,739
Intangible Assets, Net	2,862	2,898
Other Assets	(427)	0
Total Assets	260,396	261,182
Current Liabilities:
Current Portion of Long-Term Debt	0	0
Accounts Payable	4,029	3,018
Intercompany Payables	1,360	1,963
Employee Compensation and Benefits	8,194	10,355
Income Taxes Payable	0	0
Other Current Liabilities	10,780	15,760
Total Current Liabilities	24,363	31,096
Long-Term Liabilities:
Long-Term Debt	0	0
Intercompany Loans	128,000	128,000
Employee-Related Benefits	1,869	3,992
Deferred Income Taxes	0	0
Other Liabilities	2,669	2,483
Total Long-Term Liabilities	132,538	134,475
Total Liabilities	156,901	165,571
Common Stock	0	0
Additional Paid-In Capital	77,551	72,483
Retained Earnings	26,777	23,797
Accumulated Other Comprehensive Loss	(833)	(669)
Total Tennant Company Shareholders' Equity	103,495	95,611
Noncontrolling Interest	0	0
Total Equity	103,495	95,611
Total Liabilities and Total Equity	260,396	261,182
Non-Guarantor Subsidiaries
Current Assets:
Cash and Cash Equivalents	37,156	39,422
Restricted Cash	645	653
Net Receivables	126,581	120,204
Intercompany Receivables	0	0
Inventories	102,161	94,542
Prepaid Expenses	9,481	9,405
Other Current Assets	1,674	3,473
Total Current Assets	277,698	267,699
Property, Plant and Equipment	149,966	145,549
Accumulated Depreciation	(53,727)	(50,097)
Property, Plant and Equipment, Net	96,239	95,452
Deferred Income Taxes	9,421	7,157
Investment in Affiliates	22,260	20,811
Intercompany Loans	3,690	4,983
Goodwill	181,557	171,436
Intangible Assets, Net	166,461	167,344
Other Assets	11,346	10,956
Total Assets	768,672	745,838
Current Liabilities:
Current Portion of Long-Term Debt	1,442	1,470
Accounts Payable	56,090	53,137
Intercompany Payables	53,101	51,481
Employee Compensation and Benefits	17,504	18,591
Income Taxes Payable	2,459	2,472
Other Current Liabilities	32,066	33,504
Total Current Liabilities	162,662	160,655
Long-Term Liabilities:
Long-Term Debt	1,973	1,809
Intercompany Loans	186,905	181,805
Employee-Related Benefits	8,949	8,715
Deferred Income Taxes	53,412	53,225
Other Liabilities	5,701	1,677
Total Long-Term Liabilities	256,940	247,231
Total Liabilities	419,602	407,886
Common Stock	11,131	11,131
Additional Paid-In Capital	384,460	384,460
Retained Earnings	(17,872)	(21,219)
Accumulated Other Comprehensive Loss	(30,535)	(38,391)
Total Tennant Company Shareholders' Equity	347,184	335,981
Noncontrolling Interest	1,886	1,971
Total Equity	349,070	337,952
Total Liabilities and Total Equity	$ 768,672	$ 745,838

Separate Financial Informatio68

Separate Financial Information of Guarantor Subsidiaries Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	$ 5,539	$ (11,109)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(3,480)	(4,673)
Proceeds from Disposals of Property, Plant and Equipment	16	53
Proceeds from Principal Payments Received on Long-Term Note Receivable	167	0
Issuance of Long-Term Note Receivable	0	(1,500)
Acquisition of Businesses, Net of Cash Acquired	0	(304)
Purchase of Intangible Assets	(1,000)	(2,500)
Change in Investments in Subsidiaries		0
Loan (Payments) Borrowings from Subsidiaries	0
Net Cash Used in Investing Activities	(4,297)	(8,924)
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent	0
Change in Subsidiary Equity		0
Proceeds from Issuance of Long-term Debt	0	20,000
Payments of Long-term Debt	(4,037)	(11,151)
Change in Capital Lease Obligations	81	0
Proceeds from Issuance of Common Stock	794	1,655
Dividends Paid	(3,758)	(3,722)
Net Cash (Used in) Provided by Financing Activities	(6,920)	6,782
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	1,273	330
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(4,405)	(12,921)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	59,051	58,550
Cash, Cash Equivalents and Restricted Cash at End of Period	54,646	45,629
Eliminations
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	0	0
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	0	0
Proceeds from Disposals of Property, Plant and Equipment	0	0
Proceeds from Principal Payments Received on Long-Term Note Receivable	0
Issuance of Long-Term Note Receivable		0
Acquisition of Businesses, Net of Cash Acquired		0
Purchase of Intangible Assets	0	0
Change in Investments in Subsidiaries		3,500
Loan (Payments) Borrowings from Subsidiaries	1,294
Net Cash Used in Investing Activities	1,294	(3,500)
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent	(1,294)
Change in Subsidiary Equity		(3,500)
Proceeds from Issuance of Long-term Debt		0
Payments of Long-term Debt	0	0
Change in Capital Lease Obligations	0
Proceeds from Issuance of Common Stock	0	0
Dividends Paid	0	0
Net Cash (Used in) Provided by Financing Activities	(1,294)	(3,500)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0	0
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	0	0
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	0	0
Cash, Cash Equivalents and Restricted Cash at End of Period	0	0
Parent
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	5,815	(14,063)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(342)	(1,188)
Proceeds from Disposals of Property, Plant and Equipment	11	6
Proceeds from Principal Payments Received on Long-Term Note Receivable	0
Issuance of Long-Term Note Receivable		0
Acquisition of Businesses, Net of Cash Acquired		(304)
Purchase of Intangible Assets	(1,000)	(2,500)
Change in Investments in Subsidiaries		(3,500)
Loan (Payments) Borrowings from Subsidiaries	(1,294)
Net Cash Used in Investing Activities	(2,625)	(7,486)
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent	0
Change in Subsidiary Equity		0
Proceeds from Issuance of Long-term Debt		20,000
Payments of Long-term Debt	(4,000)	(11,143)
Change in Capital Lease Obligations	0
Proceeds from Issuance of Common Stock	794	1,655
Dividends Paid	(3,758)	(3,722)
Net Cash (Used in) Provided by Financing Activities	(6,964)	6,790
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	72	(102)
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(3,702)	(14,861)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	18,469	38,484
Cash, Cash Equivalents and Restricted Cash at End of Period	14,767	23,623
Guarantor Subsidiaries
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	1,800	438
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(229)	0
Proceeds from Disposals of Property, Plant and Equipment	0	0
Proceeds from Principal Payments Received on Long-Term Note Receivable	0
Issuance of Long-Term Note Receivable		0
Acquisition of Businesses, Net of Cash Acquired		0
Purchase of Intangible Assets	0	0
Change in Investments in Subsidiaries		0
Loan (Payments) Borrowings from Subsidiaries	0
Net Cash Used in Investing Activities	(229)	0
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent	0
Change in Subsidiary Equity		0
Proceeds from Issuance of Long-term Debt		0
Payments of Long-term Debt	0	0
Change in Capital Lease Obligations	0
Proceeds from Issuance of Common Stock	0	0
Dividends Paid	0	0
Net Cash (Used in) Provided by Financing Activities	0	0
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0	0
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	1,571	438
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	507	226
Cash, Cash Equivalents and Restricted Cash at End of Period	2,078	664
Non-Guarantor Subsidiaries
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	(2,076)	2,516
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(2,909)	(3,485)
Proceeds from Disposals of Property, Plant and Equipment	5	47
Proceeds from Principal Payments Received on Long-Term Note Receivable	167
Issuance of Long-Term Note Receivable		(1,500)
Acquisition of Businesses, Net of Cash Acquired		0
Purchase of Intangible Assets	0	0
Change in Investments in Subsidiaries		0
Loan (Payments) Borrowings from Subsidiaries	0
Net Cash Used in Investing Activities	(2,737)	(4,938)
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent	1,294
Change in Subsidiary Equity		3,500
Proceeds from Issuance of Long-term Debt		0
Payments of Long-term Debt	(37)	(8)
Change in Capital Lease Obligations	81
Proceeds from Issuance of Common Stock	0	0
Dividends Paid	0	0
Net Cash (Used in) Provided by Financing Activities	1,338	3,492
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	1,201	432
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(2,274)	1,502
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	40,075	19,840
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 37,801	$ 21,342

Separate Financial Informatio69

Separate Financial Information of Guarantor Subsidiaries Narrative (Details) - Bonds $ in Thousands	Apr. 18, 2017USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Debt Instrument, Face Amount	$ 300,000
Debt Instrument, Interest Rate, Stated Percentage	5.625%