ACQUISITIONS AND DIVESTITURES (Schedule Of Business Acquisitions) (Details) - USD ($)		3 Months Ended	12 Months Ended
		Mar. 31, 2017	Dec. 31, 2016
ACQUISITIONS AND DIVESTITURES [Abstract]
Cash		$ 185,067,000
Total fair value of purchase consideration		185,067,000	$ 33,287,000
Inventories		4,057,000
Other current assets		90,000
Property, plant & equipment, net		111,619,000
Contractual rights in place		62,824,000
Other intangibles		61,000
Liabilities assumed		(1,000)
Net identifiable assets acquired		178,650,000
Goodwill	[1]	$ 6,417,000

[1] See Note 16 for a summary of the current year acquisitions.