CREDIT FACILITY AND LONG-TERM DEBT (Summary of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term debt	$ 735,576	$ 709,980
Less—Current maturities	(12,029)	0
Total long-term debt	723,547	709,980
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	15,000	0
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term debt	53,089	43,442
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 667,487	$ 666,538