FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2018

FAIR VALUE MEASUREMENTS [Abstract]

Fair Value Measurement on Recurring Basis

	Level 1 Fair Value
	June 30	December 31	June 30
in thousands	2018	2017	2017
Fair Value Recurring
Rabbi Trust
Mutual funds	$       20,698	$       20,348	$         5,348
Equities	0	0	11,785
Total	$       20,698	$       20,348	$       17,133

	Level 2 Fair Value
	June 30	December 31	June 30
in thousands	2018	2017	2017
Fair Value Recurring
Rabbi Trust
Money market mutual fund	$        1,754	$        1,203	$        2,338
Total	$        1,754	$        1,203	$        2,338