| **COMMON STOCK Schedule of Changes in SARs (Details) - USD ($)**                                                                                   | 12 Months Ended          |                  |             |           |             |
|----------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------|------------------|-------------|-----------|-------------|
||
| **Share based compesation aggregate intrinsic valu [Roll Forward]**                                                                                |                     |             |        |      |        |   |   |
| Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent                                                                  |                     |             |        | $ 63,969  |        |   |   |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period                                  | (71,931)                 |             |        |      |        |   |   |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price | $ 46.34                  |             |        |      |        |   |   |
| Stock Appreciation Rights (SARs) [Member]                                                                                                          |                     |             |        |      |        |   |   |
| **Number of SARs**                                                                                                                                 |                     |             |        |      |        |   |   |
| Outstanding beginning of year, January 1,                                                                                                          | 298,220                  | 244,078          | 326,453     |      |        |   |   |
| Awarded                                                                                                                                            | 0                        | 54,142           | 58,709      |      |        |   |   |
| Exercised                                                                                                                                          | 0                        | 0                | (141,084)   |      |        |   |   |
| Outstanding end of year, December 31,                                                                                                              | 290,258                  | 298,220          | 244,078     |      |        |   |   |
| Exercisable at December 31,                                                                                                                        |                     |             |        | 260,101   | 223,865     | 174,919 |   |
| **Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]**        |                     |             |        |      |        |   |   |
| Outstanding beginning of year, January 1,                                                                                                          | $ 47.39                  | $ 41.36          | $ 38.99     |      |        |   |   |
| Awarded                                                                                                                                            | 0.00                     | 74.57            | 51.63       |      |        |   |   |
| Exercised                                                                                                                                          | 0.00                     | 0.00             | 40.16       |      |        |   |   |
| Outstanding end of year, December 31,                                                                                                              | $ 46.64                  | $ 47.39          | $ 41.36     |      |        |   |   |
| Exercisable at December 31,                                                                                                                        |                     |             |        | $ 44.88   | $ 43.28     | $ 38.72 |   |
| **Weighted-Average Remaining Contractual Term (in years)**                                                                                         |                     |             |        |      |        |   |   |
| Outstanding at December 31,                                                                                                                        | 4 years 7 months 6 days  | 6 years 6 months |        |      |        |   |   |
| Exercisable at December 31,                                                                                                                        | 4 years 3 months 20 days |             |        |      |        |   |   |
| **Share based compesation aggregate intrinsic valu [Roll Forward]**                                                                                |                     |             |        |      |        |   |   |
| Outstanding beginning of year, January 1,                                                                                                          | $ 125,000                | $ 2,490,000      | $ 7,620,000 | $ 125,000 | $ 2,490,000 | $ 7,620,000 | $ 4,697,000 |
| Awarded                                                                                                                                            | 0                        | 0                | 0           |      |        |   |   |
| Exercised                                                                                                                                          | 0                        | 0                | 2,770,000   |      |        |   |   |
| Outstanding end of year, December 31,                                                                                                              | $ 125,000                | $ 2,490,000      | $ 7,620,000 |      |        |   |   |
| Exercisable at December 31,                                                                                                                        |                     |             |        | 125,000   | $ 2,267,000 | $ 5,924,000 |   |
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized                                            |                     |             |        | $ 500,000 |        |   |   |
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition                          | 5 months 24 days         |             |        |      |        |   |   |

| X                                                                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Share based compensation remaining contractual term [Roll Forward]
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| - Definition
Share based compesation aggregate intrinsic valu [Roll Forward]
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| X                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Intrinsic value of share based awards exercised during the period
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Intrinsic value of share based awards granted during the period
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| X                                                                                                                                                                                                                                                                                                                                                                                                                     |
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| - Definition
Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Unrecognized cost of unvested share-based compensation awards.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of non-option equity instruments exercised by participants.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Net number of non-option equity instruments granted to participants.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of equity instruments other than options outstanding, including both vested and non-vested instruments.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.
+ References
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| - Definition
Weighted average price of options that were either forfeited or expired.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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| - Definition
Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.
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| - Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.
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No definition available.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
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