FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2020

FAIR VALUE MEASUREMENTS [Abstract]

Fair Value Measurement on Recurring Basis

	Level 1 Fair Value
	March 31	December 31	March 31
in thousands	2020	2019	2019
Fair Value Recurring
Rabbi Trust
Mutual funds	$       19,001	$       22,883	$       20,953
Total	$       19,001	$       22,883	$       20,953

	Level 2 Fair Value
	March 31	December 31	March 31
in thousands	2020	2019	2019
Fair Value Recurring
Rabbi Trust
Money market mutual fund	$           520	$        1,340	$           490
Total	$           520	$        1,340	$           490