UNEARNED REVENUE (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Changes in unearned revenue

Changes in unearned revenue were as follows:

For the period ended	March 31,			December 31,			March 31,
(in thousands)	2019			2018			2018
Balance at beginning of year	$	127,075		$	117,614		$	117,614
Deferral of unearned revenue		47,737			166,053			47,725
Recognition of unearned revenue		(39,958	)		(156,592	)		(38,309	)
Balance at end of period	$	134,854		$	127,075		$	126,530