FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2019

FAIR VALUE MEASUREMENTS [Abstract]

Fair Value Measurement on Recurring Basis

	Level 1 Fair Value
	March 31	December 31	March 31
in thousands	2019	2018	2018
Fair Value Recurring
Rabbi Trust
Mutual funds	$       20,953	$       19,164	$       19,412
Total	$       20,953	$       19,164	$       19,412

	Level 2 Fair Value
	March 31	December 31	March 31
in thousands	2019	2018	2018
Fair Value Recurring
Rabbi Trust
Money market mutual fund	$           490	$        1,015	$        2,738
Total	$           490	$        1,015	$        2,738