STOCK-BASED COMPENSATION (Analysis of Stock Options Award Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2019
Shares
Outstanding at beginning of period (in shares)	897,903
Granted (in shares)	61,216
Exercised (in shares)	(119,706)
Forfeited (in shares)	(8,699)
Expired (in shares)	(1,000)
Outstanding at end of period (in shares)	829,714
Exercisable at end of period (in shares)	537,127
Weighted-Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 33.24
Granted (in dollars per share)	54.26
Exercised (in dollars per share)	28.83
Forfeited (in dollars per share)	37.97
Expired (in dollars per share)	18.14
Outstanding at end of period (in dollars per share)	35.39
Exercisable at end of period (in dollars per share)	$ 31.53
Outstanding at end of period, weighted-average remaining life	5 years 7 months 13 days
Exercisable at end of period, weighted-average remaining life	4 years 9 months 3 days
Outstanding at end of period, aggregate intrinsic value	$ 7,666
Exercisable at end of period, aggregate intrinsic value	$ 6,586

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.