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STOCK AWARD PLANS, Director Plan Stock Option Activity (Details) - Director Plan [Member] - Stock Options [Member]	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Outstanding Non-Qualified or Nonincentive Stock Awards [Roll Forward]
Outstanding at Period Start (in shares) | shares	205,429
Granted (in shares) | shares	3,188
Exercised (in shares) | shares	(39,000)
Forfeited (in shares) | shares	(12,000)
Outstanding at Period End (in shares) | shares	157,617
Weighted Average Exercise Price [Abstract]
Outstanding at Period Start (in dollars per share) | $ / shares	$ 64.60
Granted (in dollars per share) | $ / shares	70.65
Exercised (in dollars per share) | $ / shares	46.23
Forfeited (in dollars per share) | $ / shares	87.35
Outstanding at Period End (in dollars per share) | $ / shares	$ 67.54

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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.

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-Publisher FASB
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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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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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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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