FAIR VALUE MEASUREMENTS: (Details) (USD $)										1 Months Ended		9 Months Ended
	Oct. 12, 2013 9.25% Senior Secured Second Lien Notes due 2017	Sep. 30, 2013 9.25% Senior Secured Second Lien Notes due 2017	Sep. 30, 2013 8.375% Senior Notes due 2018	Sep. 30, 2013 6.125% Senior Unsecured Notes due 2022	Jun. 28, 2013 6.125% Senior Unsecured Notes due 2022	Oct. 31, 2012 6.125% Senior Unsecured Notes due 2022	Sep. 30, 2013 5.375% Senior Unsecured Notes due 2021	Jun. 28, 2013 5.375% Senior Unsecured Notes due 2021	Apr. 02, 2013 5.375% Senior Unsecured Notes due 2021	Oct. 31, 2013 3.0% Convertible Senior Notes, due 2027	Sep. 30, 2013 3.0% Convertible Senior Notes, due 2027	Sep. 30, 2013 Level 1 Fair Value Cunningham item	Dec. 31, 2012 Level 1 Fair Value Cunningham	Sep. 30, 2013 Level 2 Carrying Value 9.25% Senior Secured Second Lien Notes due 2017	Dec. 31, 2012 Level 2 Carrying Value 9.25% Senior Secured Second Lien Notes due 2017	Sep. 30, 2013 Level 2 Carrying Value 8.375% Senior Notes due 2018	Dec. 31, 2012 Level 2 Carrying Value 8.375% Senior Notes due 2018	Sep. 30, 2013 Level 2 Carrying Value 6.125% Senior Unsecured Notes due 2022	Dec. 31, 2012 Level 2 Carrying Value 6.125% Senior Unsecured Notes due 2022	Sep. 30, 2013 Level 2 Carrying Value 5.375% Senior Unsecured Notes due 2021	Sep. 30, 2013 Level 2 Carrying Value Term Loan A	Dec. 31, 2012 Level 2 Carrying Value Term Loan A	Sep. 30, 2013 Level 2 Carrying Value Term Loan B	Dec. 31, 2012 Level 2 Carrying Value Term Loan B	Sep. 30, 2013 Level 2 Carrying Value Deerfield Bank Credit Facility	Dec. 31, 2012 Level 2 Carrying Value Deerfield Bank Credit Facility	Sep. 30, 2013 Level 2 Carrying Value Cunningham Bank Credit Facility	Sep. 30, 2013 Level 2 Fair Value 9.25% Senior Secured Second Lien Notes due 2017	Dec. 31, 2012 Level 2 Fair Value 9.25% Senior Secured Second Lien Notes due 2017	Sep. 30, 2013 Level 2 Fair Value 8.375% Senior Notes due 2018	Dec. 31, 2012 Level 2 Fair Value 8.375% Senior Notes due 2018	Sep. 30, 2013 Level 2 Fair Value 6.125% Senior Unsecured Notes due 2022	Dec. 31, 2012 Level 2 Fair Value 6.125% Senior Unsecured Notes due 2022	Sep. 30, 2013 Level 2 Fair Value 5.375% Senior Unsecured Notes due 2021	Sep. 30, 2013 Level 2 Fair Value Term Loan A	Dec. 31, 2012 Level 2 Fair Value Term Loan A	Sep. 30, 2013 Level 2 Fair Value Term Loan B	Dec. 31, 2012 Level 2 Fair Value Term Loan B	Sep. 30, 2013 Level 2 Fair Value Deerfield Bank Credit Facility	Dec. 31, 2012 Level 2 Fair Value Deerfield Bank Credit Facility	Sep. 30, 2013 Level 2 Fair Value Cunningham Bank Credit Facility
FAIR VALUE MEASUREMENTS:
Interest rate (as a percent)	9.25%	9.25%	8.375%	6.125%	6.125%	6.125%	5.375%	5.375%	5.375%		3.00%
Fair Value														$ 491,709,000	$ 490,517,000	$ 235,129,000	$ 234,853,000	$ 500,000,000	$ 500,000,000	$ 600,000,000	$ 55,000,000	$ 263,875,000	$ 398,000,000	$ 580,850,000	$ 24,694,000	$ 19,950,000	$ 21,500,000	$ 531,875,000	$ 552,500,000	$ 237,506,000	$ 265,886,000	$ 503,125,000	$ 533,125,000	$ 574,500,000	$ 54,753,000	$ 262,556,000	$ 394,178,000	$ 589,125,000	$ 24,898,000	$ 19,950,000	$ 21,500,000
Number of VIEs who classify investments as trading securities												1
Notes converted and settled in cash										10,500,000
Fair value of trading securities												$ 9,000,000	$ 6,400,000