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v3.21.1

Note 3 - Revenue - Contract Liabilities (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Sales Incentives [Member] |  |
Beginning balance | $ 12.1 | $ 13.7
Additions to sales incentive accrual | 5.2 | 5.4
Contract payments | (5.7) | (8.2)
Foreign currency fluctuations | (0.2) | (0.2)
Divestiture of business | (0.1) | 0.0
Ending balance | 11.3 | 10.7
Maintenance [Member] |  |
Foreign currency fluctuations | 0.0 | (0.1)
Beginning balance | 9.3 | 10.7
Increase in deferred revenue representing our obligation to satisfy future performance obligations | 4.1 | 2.7
Decrease in deferred revenue for amounts recognized in Net Sales for satisfied performance obligations | (3.4) | (2.5)
Ending balance | $ 10.0 | $ 10.8

X
- Definition The amount of decrease in contract with customer liability from contract payments. + References No definition available. + Details
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Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of decrease in contract with customer liability from divestiture of business. + References No definition available. + Details
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Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

X
- Definition The amount of increase (decrease) in contract with customer liability from the impact of foreign currency. + References No definition available. + Details
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Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
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X
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X
- Definition Amount of increase in obligation to transfer good or service to customer for which consideration has been received or is receivable. + References No definition available. + Details
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X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130532-203044 + Details
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X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 + Details
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X
- Definition Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 55 -Paragraph 27 -URI http://asc.fasb.org/extlink&oid=121551570&loc=SL49130611-203046-203046 + Details
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X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

X
- Details
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