STOCKHOLDERS' EQUITY Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Balance at the beginning of period	$ 4,816	$ 6,327	$ (18,048)
Derivative instruments
Reclassification of net loss (gain) relating to interest rate cash flow hedges from AOCI to interest expense — net (net of tax of $342, $349 and $436 for the years ended December 31, 2015, 2014 and 2013, respectively)	501	445	(25)
Reclassification of loss relating to interest rate cash flow hedges from AOCI to loss on extinguishment of debt (net of tax of $83 for the year ended December 31, 2014)	0	(117)	0
(Loss) gain on interest rate swaps relating to interest rate cash flow hedges (net of tax of $625, $1,465 and $15,652 for the years ended December 31, 2015, 2014 and 2013, respectively)	(876)	(2,041)	24,329
Derivative instruments, net of tax	(375)	(1,479)	24,304
Available-for-sale securities
Unrealized (loss) gain on available-for-sale securities (net of tax of $126, $18 and $46 for the years ended December 31, 2015, 2014 and 2013, respectively)	(176)	(32)	71
Available-for-sale securities, net of tax	(176)	(32)	71
TOTAL OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX	(551)	(1,511)	24,375
Balance at the end of period	4,265	4,816	6,327
Changes in Accumulated Other Comprehensive Income, Parenthetical Disclosures
Reclassification of net loss (gain) relating to interest rate cash flow hedges from AOCI to interest expense, tax	342	349	436
Reclassification of loss relating to interest rate cash flow hedges from AOCI to loss on extinguishment of debt, tax		83
(Loss) gain on interest rate swaps relating to interest rate cash flow hedges, tax	625	1,465	15,652
Unrealized (loss) gain on available-for-sale securities, tax	$ 126	$ 18	$ 46