XML 53 R37.htm IDEA: XBRL DOCUMENT
v3.21.2

Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Selling, General and Administrative Expense, Total | $ 86.2 | $ 60.0 | $ 155.8 | $ 141.0
Reclassification from Selling and Administrative Expense to Costs of Sales [Member] |  |  |  |
Selling, General and Administrative Expense, Total |  | $ 1.1 |  | $ 2.4

X
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
Name: | us-gaap_SellingGeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ReclassificationTypeAxis=tnc_ReclassificationFromSellingAndAdministrativeExpenseToCostsOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |