XML 67 R23.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Employee Stock Ownership Plan | 12 Months Ended
--- | ---
Dec. 31, 2011
Employee Stock Ownership Plan [Abstract] |
Employee Stock Ownership Plan |
16. | Employee Stock Ownership Plan
We established a leveraged Employee Stock Ownership Plan (“ESOP”) in 1990. The ESOP covered substantially all domestic employees. The shares required for our 401(k) matching contribution program were provided principally by our ESOP, supplemented as needed by newly issued shares. We made annual contributions to the ESOP equal to the ESOP's debt service less dividends and Company match contributions received by the ESOP. All dividends received by the ESOP were used to pay debt service. The ESOP shares initially were pledged as collateral for its debt. As the debt was repaid, shares were released from collateral and allocated to employees who made 401(k) contributions that year, in the form of a matching contribution, based on the proportion of debt service paid in the year. Shares pledged as collateral were reported as unearned ESOP shares in the Consolidated Balance Sheets. As shares were released from collateral, we reported compensation expense equal to the cost of the shares to the ESOP. All ESOP shares were considered outstanding in earnings-per-share computations, and dividends on allocated and unallocated shares were recorded as a reduction of Retained Earnings. The benefit provided through the ESOP was net of expenses and was recorded in Other Income. On December 31, 2009, the ESOP's twenty year loan matured and was repaid to us, completing the term for this ESOP. The following table summarizes ESOP activity during the year ended December 31:
|  | 2009 |
Cash contributions |  | $ | 1,717 |
Net benefit provided by ESOP |  |  | 989 |
Interest earned and received on loan |  |  | 190 |
Dividends |  |  | 359 |
The ESOP shares as of December 31, 2009 were as follows:
|  | 2009 |
Allocated shares |  |  | 1,938,132 |
Unreleased shares |  |  | - |
Total ESOP shares |  |  | 1,938,132 |

X
- Details
Name: | tnc_EmployeeStockOwnershipPlanAbstract
Namespace Prefix: | tnc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure of employee stock ownership. + References No definition available. + Details
Name: | tnc_EmployeeStockOwnershipPlanTextBlock
Namespace Prefix: | tnc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration