FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2020

FAIR VALUE MEASUREMENTS [Abstract]

Fair Value Measurement on Recurring Basis

	Level 1 Fair Value
	June 30	December 31	June 30
in thousands	2020	2019	2019
Fair Value Recurring
Rabbi Trust
Mutual funds	$       21,994	$       22,883	$       23,382
Total	$       21,994	$       22,883	$       23,382

	Level 2 Fair Value
	June 30	December 31	June 30
in thousands	2020	2019	2019
Fair Value Recurring
Rabbi Trust
Money market mutual fund	$        1,738	$        1,340	$           398
Total	$        1,738	$        1,340	$           398