DEFERRED REVENUE (Summary Of Recognized Deferred Revenue) (Details) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
DEFERRED REVENUE [Abstract]
Balance at beginning of period			$ 218,987,000	$ 223,946,000	$ 219,968,000	$ 224,743,000
Cash received and revenue deferred	$ 153,282,000	$ 73,644,000	0	0	0	187,000
Amortization of deferred revenue			(1,558,000)	(1,357,000)	(2,539,000)	(2,341,000)
Balance at end of period			$ 217,429,000	$ 222,589,000	$ 217,429,000	$ 222,589,000