STOCK PLANS (Summary Non-Vested Restricted Stock Activity) (Details) - Restricted stock awards	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Shares
Balance at beginning of year (in shares) | shares	12,438
Shares vested (in shares) | shares	(12,438)
Balance at end of year (in shares) | shares	0
Weighted Average Grant Date Fair Value
Balance at beginning of year, weighted average grant date fair value (in dollars per share) | $ / shares	$ 80.98
Shares vested, weighted average grant date fair value (in dollars per share) | $ / shares	94.71
Balance at end of year, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0