LONG-TERM DEBT LIABILITIES - Debt Extinguishment and Net Interest Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net Interest Expense
Interest expense	$ 8,743	$ 10,366
Amortization of deferred financing costs	1,087	1,043
Amortization of original issue discount of senior notes	73	66
Interest income and other investment income	0	(1)
Total net interest expense	$ 9,903	$ 11,474