XML 67 R51.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Debt (Details 1) - USD ($) $ in Thousands | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Apr. 18, 2017 | Apr. 04, 2017 | Dec. 31, 2016
Debt Instrument |  |  |  |
Registration Rights Agreement, Effective Date | Apr. 18, 2017 |  |  |
Registration Rights Agreement Term | 360 days |  |  |
Long-term Debt |  |  |  |
Total Debt | $ 418,438 |  |  | $ 36,194
Less: Unamortized Debt Issuance Costs | (7,415) |  |  | 0
Less: Current Maturities of Capital Lease Obligations | (402) |  |  | 0
Long-Term Portion | 405,716 |  |  | 32,735
Current Maturities of Long-Term Debt | 5,307 |  |  | 3,459
Letters of Credit Outstanding | 4,645 |  |  |
Commitment fees on unused line of credit | $ 200 |  |  |
Weighted average interest rate | 4.87% |  |  |
Debt, Weighted Average Interest Rate, net of Currency Swap Contract | 4.20% |  |  |
Senior Notes due 2025 |  |  |  |
Debt Instrument |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.625% |  |  |
Bonds, Initiation Date | Apr. 18, 2017 |  |  |
Debt Instrument, Face Amount |  | $ 300,000 |  |
Debt Instrument, Maturity Date | May 01, 2025 |  |  |
Long-term Debt |  |  |  |
Total Debt | $ 300,000 |  |  | 0
Term Loan Facility |  |  |  |
Debt Instrument |  |  |  |
Outstanding Borrowings | 97,750 |  |  |
Long-term Debt |  |  |  |
Less: Current Maturities of Credit Facility Borrowings, Net of Debt Issuance Costs | (4,905) |  |  | (3,459)
Current Maturities of Long-Term Debt | 5,000 |  |  |
Unamortized Debt Issuance Costs, Current Portion | 95 |  |  |
Revolving Facility |  |  |  |
Debt Instrument |  |  |  |
Outstanding Borrowings | 20,000 |  |  |
Capital lease obligations |  |  |  |
Long-term Debt |  |  |  |
Total Debt | $ 688 |  |  | 51
JPMorgan, 2017 Credit Agreement |  |  |  |
Debt Instrument |  |  |  |
Line of Credit Facility, Initiation Date | Apr. 04, 2017 |  |  |
Line of Credit Facility, Expiration Date | Apr. 04, 2022 |  |  |
Line Of Credit Facility, Interest rate margin spread added to Federal Funds Rate on US Dollar borrowings | 0.50% |  |  |
Line Of Credit Facility, Minimum LIBOR one month interest rate on borrowings denominated in US dollars | 0.00% |  |  |
Line Of Credit Facility, Interest rate margin spread added to LIBOR rate on US Dollar borrowings | 1.00% |  |  |
Line Of Credit Facility, Minimum LIBOR one month interest rate on eurocurrency borrowings | 0.00% |  |  |
Long-term Debt |  |  |  |
Total Debt | $ 117,750 |  |  |
JPMorgan, 2017 Credit Agreement | Term Loan Facility |  |  |  |
Debt Instrument |  |  |  |
Line of Credit Facility, Current Borrowing Capacity | $ 400,000 |  |  |
Line Of Credit Facility, Minimum interest rate margin spread added to LIBOR rate on US Dollar borrowings | 0.25% |  |  |
Line Of Credit Facility, Maximum interest rate margin spread added to LIBOR rate on US Dollar borrowings | 1.25% |  |  |
Minimum interest rate spread added to adjusted LIBOR rate based on leverage ratio on Eurocurrency borrowings (in hundreths) | 1.25% |  |  |
Maximum interest rate spread added to adjusted LIBOR rate based on leverage ratio on Eurocurrency borrowings (in hundreths) | 2.25% |  |  |
Debt Instrument, Face Amount |  | $ 300,000 |  |
JPMorgan, 2017 Credit Agreement | Revolving Facility |  |  |  |
Debt Instrument |  |  |  |
Line of Credit Facility, Current Borrowing Capacity | $ 200,000 |  |  |
Line Of Credit Facility, Additional Borrowing Capacity Available | $ 150,000 |  |  |
Line Of Credit Facility, Minimum commitment fee percentage | 0.175% |  |  |
Line Of Credit Facility, Maximum commitment fee percentage | 0.35% |  |  |
Line Of Credit Facility, Minimum interest rate margin spread added to LIBOR rate on US Dollar borrowings | 0.075% |  |  |
Line Of Credit Facility, Maximum interest rate margin spread added to LIBOR rate on US Dollar borrowings | 0.90% |  |  |
Minimum interest rate spread added to adjusted LIBOR rate based on leverage ratio on Eurocurrency borrowings (in hundreths) | 1.075% |  |  |
Maximum interest rate spread added to adjusted LIBOR rate based on leverage ratio on Eurocurrency borrowings (in hundreths) | 1.90% |  |  |
JPMorgan, Previous Credit Agreement |  |  |  |
Debt Instrument |  |  |  |
Outstanding Borrowings |  |  | $ 45,000 |
Long-term Debt |  |  |  |
Total Debt |  |  |  | $ 36,143
Prudential Investment Management, Inc. |  |  |  |
Long-term Debt |  |  |  |
Repayments of Long-term Debt | $ 11,143 |  |  |
HSBC Bank (China) Company Limited, Shanghai Branch |  |  |  |
Debt Instrument |  |  |  |
Outstanding Borrowings | 0 |  |  |
Long-term Debt |  |  |  |
Maximum borrowing capacity | $ 5,000 |  |  |

X
- Definition Date the bonds first became available, in CCYY-MM-DD format + References No definition available. + Details
Name: | tnc_BondsInitiationDate
Namespace Prefix: | tnc_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of short-term debt and current maturity of long-term debt due within one year or the normal operating cycle, if longer, net of debt issuance costs + References No definition available. + Details
Name: | tnc_DebtCurrentNetofDebtIssuanceCosts
Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unamortized debt issuance costs, current portion, net + References No definition available. + Details
Name: | tnc_DebtInstrumentUnamortizedDebtIssuanceCostsCurrentPortionnet
Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unamortized debt issuance costs, noncurrent portion + References No definition available. + Details
Name: | tnc_DebtInstrumentUnamortizedDebtIssuanceCostsNoncurrentnet
Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted average interest rate of debt outstanding, net of currency swap contract. + References No definition available. + Details
Name: | tnc_DebtWeightedAverageInterestRatenetofCurrencySwapContract
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of additional borrowing capacity under a line of credit that is available as of the balance sheet date. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityAdditionalBorrowingCapacityAvailable
Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of additional margin spread added to the Federal Funds interest rate on borrowings denominated in U.S. dollars. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityInterestRateMarginSpreadAddedToFederalFundsRateOnUSDollarBorrowings
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of additional margin spread added to the LIBOR one month interest rate on borrowings denominated in U.S. dollars. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityInterestRateMarginSpreadAddedtoLIBORRateOnUSDollarBorrowings
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityMaximumCommitmentFeePercentage
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum amount of additional margin spread added to LIBOR one month interest rate on borrowings denominated in U.S. dollars. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityMaximumInterestRateMarginSpreadAddedToLIBORRateOnUSDollarBorrowings
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The minimum fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityMinimumCommitmentFeePercentage
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum amount of additional margin spread added to the LIBOR one month interest rate on borrowings denominated in U.S. dollars. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityMinimumInterestRateMarginSpreadAddedtoLIBORRateOnUSDollarBorrowings
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The minimum LIBOR one month interest rate on borrowings denominated in US dollars + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityMinimumLIBORonemonthinterestrateonborrowingsdenominatedinUSdollars
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The minimum LIBOR one month interest rate on eurocurrency borrowings. + References No definition available. + Details
Name: | tnc_LineOfCreditFacilityMinimumLIBORonemonthinterestrateoneurocurrencyborrowings
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum interest rate spread added to adjusted LIBOR rate based on leverage ratio on Eurocurrency borrowings (in hundreths). + References No definition available. + Details
Name: | tnc_MaximuminterestratespreadaddedtoadjustedLIBORratebasedonleverageratioonEurocurrencyborrowingsinhundreths
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum interest rate spread added to adjusted LIBOR rate based on leverage ratio on Eurocurrency borrowings (in hundreths). + References No definition available. + Details
Name: | tnc_MinimuminterestratespreadaddedtoadjustedLIBORratebasedonleverageratioonEurocurrencyborrowingsinhundreths
Namespace Prefix: | tnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the registration rights agreement became effective, in CCYY-MM-DD format + References No definition available. + Details
Name: | tnc_RegistrationRightsAgreementEffectiveDate
Namespace Prefix: | tnc_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of time between entrance into the Registration Rights Agreement and the maximum amount of time for which the Company will not owe additional interest if it satisfies its obligations under the Agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | tnc_RegistrationRightsAgreementTerm
Namespace Prefix: | tnc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of capital lease obligation due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 + Details
Name: | us-gaap_CapitalLeaseObligationsCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_DebtAndCapitalLeaseObligations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
Name: | us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of the fee for available but unused credit capacity under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the credit facility first became available, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityInitiationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtAndCapitalLeaseObligations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LongTermDebtNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_BondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_CapitalLeaseObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=tnc_JPMorgan2017CreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=tnc_JPMorganAmendedandRestatedCreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=tnc_PrudentialInvestmentManagementInc.PrivateShelfAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=tnc_HsbcBankChinaCompanyLimitedShanghaiBranchMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |