DEBT (Details) (USD $)	12 Months Ended				12 Months Ended				12 Months Ended						0 Months Ended	12 Months Ended													0 Months Ended	12 Months Ended								12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Apr. 19, 2013	Dec. 31, 2013 Prior Revolving Credit Facility	Dec. 31, 2012 Prior Revolving Credit Facility	Dec. 31, 2011 Prior Revolving Credit Facility	Jul. 03, 2012 Prior Revolving Credit Facility	Dec. 31, 2013 Senior Unsecured 10.25% Notes	Dec. 31, 2012 Senior Unsecured 10.25% Notes	Dec. 31, 2011 Senior Unsecured 10.25% Notes	Dec. 31, 2013 Senior Secured Revolving Credit Facility	Dec. 31, 2012 Senior Secured Revolving Credit Facility	Dec. 31, 2011 Senior Secured Revolving Credit Facility	Dec. 31, 2013 Term Loan B Facility	Dec. 31, 2013 Term Loan B Facility	Dec. 31, 2012 Term Loan B Facility	Dec. 31, 2011 Term Loan B Facility	Dec. 31, 2013 Senior Credit Facilities	Dec. 31, 2013 Senior Credit Facilities Senior Secured Revolving Credit Facility	Jul. 31, 2013 Senior Credit Facilities Senior Secured Revolving Credit Facility	Dec. 31, 2012 Senior Credit Facilities Senior Secured Revolving Credit Facility	Dec. 31, 2013 Senior Credit Facilities Term Loan B Facility	Jul. 31, 2013 Senior Credit Facilities Term Loan B Facility	Dec. 31, 2012 Senior Credit Facilities Term Loan B Facility	Jul. 31, 2013 Senior Credit Facilities Delayed Draw Term Loan B Facility	Dec. 31, 2013 Revolving Credit Facility	Dec. 31, 2012 Revolving Credit Facility	Jul. 31, 2013 Unsecured Debt Senior Unsecured 10.25% Notes	Dec. 31, 2013 Unsecured Debt Senior Unsecured 10.25% Notes	Aug. 19, 2013 Unsecured Debt Senior Unsecured 10.25% Notes	Jun. 03, 2013 Unsecured Debt Senior Unsecured 10.25% Notes	Dec. 31, 2012 Unsecured Debt Senior Unsecured 10.25% Notes	Dec. 31, 2011 Unsecured Debt Senior Unsecured 10.25% Notes	Mar. 25, 2010 Unsecured Debt Senior Unsecured 10.25% Notes	Dec. 31, 2013 Capital Lease Obligations	Dec. 31, 2012 Capital Lease Obligations	Dec. 31, 2013 Eurodollar Senior Credit Facilities	Dec. 31, 2013 Base Rate Senior Credit Facilities	Dec. 31, 2013 Exjade Litigation	Feb. 11, 2014 Subsequent Event Unsecured Debt Senior Unsecured 8.875% Notes	Dec. 31, 2013 Subsequent Event Eurodollar Term Loan B Facility	Dec. 31, 2013 Subsequent Event Base Rate Term Loan B Facility
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																														10.25%			10.25%	10.25%	10.25%
Long-term Debt	$ 536,919,000																			$ 40,003,000		$ 0	$ 395,000,000		$ 0		$ 0	$ 0		$ 0			$ 225,000,000
Capital Lease Obligations																																				577,000	1,379,000
long term debt and capital lease obligations, total	435,580,000	226,379,000
Long-term Debt and Capital Lease Obligations, Current	60,257,000	953,000
Long-term Debt and Capital Lease Obligations	375,323,000	225,426,000
Debt Instrument, Debt Default, Interest Rate, Penalty Increase																			2.00%
Line of Credit Facility, Borrowing Capacity, Percentage Threshold for Leverage Covenants																			25.00%
Deposit Assets				1,000,000																									107,800,000
2015 Note redemption premium																														12,162,000
Write-off of deferred financing costs																														3,501,000
Legal fees and other expenses																														235,000
Loss on extinguishment of debt	(15,898,000)	0	0																											(15,898,000)
Debt Instrument, Interest Rate, Effective Percentage												5.46%			6.50%	6.50%
Line of Credit Facility, Periodic Payment, Principal, Percentage																1.25%
Loss Contingency Accrual																																								15,000,000
Payments of Debt Restructuring Costs															500,000	500,000.0
Line of Credit Facility, Maximum Borrowing Capacity								125,000,000													75,000,000
Debt Instrument, Basis Spread on Variable Rate					3.50%																																	5.25%	4.25%			5.25%	4.25%
Interest rate base, minimum																1.25%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
Debt Instrument, Face Amount																								250,000,000		150,000,000						225,000,000									200,000,000.0
Debt Instrument, Redemption Amount for Each Thousand Dollars of Principal																															1,051.25	1,056.25
Debt Instrument, Principal Base Amount Offered to be Redeemed																																1,000.00
Debt Instrument, Percentage of Aggregate Principal, Consents Received to Amend Note Provisions																													56.10%
Repayments of Long-term Debt	5,000,000	0	0																										133,300,000
Repayments of Interest on Long Term Debt																													4,300,000
Deferred Finance Costs, Net	21,900,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	45,188,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	43,888,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	42,588,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	41,288,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	39,988,000
Long-term Debt, Maturities, Repayments of Principal after Year Five	323,979,000
Interest Expense, Debt					765,000	2,675,000	4,371,000		13,960,000	23,063,000	23,063,000	873,000	0	0		10,313,000	0	0
Amortization of deferred financing costs	2,259,000	1,261,000	1,055,000
Interest Expense, Other	(15,000)	(171,000)	(183,000)
Interest Income (Expense), Net	$ 28,197,000	$ 26,067,000	$ 25,542,000
Line of Credit Facility, Interest Rate During Period	5.43%	4.69%