Notes Payable, Long-Term Debt and Other Obligations (Notes Payable Narrative) (Details)								1 Months Ended				12 Months Ended
	Jan. 27, 2017 USD ($) shares	May 09, 2016 USD ($)	Feb. 15, 2015 USD ($)	Feb. 03, 2015 USD ($) shares	Nov. 14, 2014 USD ($)	Apr. 15, 2014 USD ($)	Mar. 24, 2014 USD ($)	Jan. 31, 2017 USD ($)	Mar. 31, 2014 USD ($) shares	Feb. 28, 2013 USD ($)	Nov. 30, 2012 USD ($)	Dec. 31, 2016 USD ($) series	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Feb. 21, 2017	Aug. 30, 2016	Aug. 30, 2014	Mar. 14, 2014	Jan. 31, 2013 USD ($)	Nov. 04, 2011	May 31, 2009 USD ($)	May 11, 2009 USD ($)
Debt Instrument [Line Items]
Increase in equity from conversion													$ 25,522,000	$ 132,021,000
Acceleration of interest expense related to debt conversion												$ 0	$ 0	$ 5,205,000
Senior Notes | Subsequent Event
Debt Instrument [Line Items]
Shares issued (in shares) | shares	2,000,000
Senior Notes | 7.75% Senior Secured Notes Due 2021
Debt Instrument [Line Items]
Interest rate		7.75%				7.75%				7.75%						7.75%	7.75%		7.75%
Principal amount		$ 235,000,000				$ 150,000,000				$ 450,000,000		$ 835,000,000							$ 835,000,000
Net proceeds from issuance of debt		$ 236,900,000				$ 158,670,000				$ 438,250,000
Redemption price		103.50%				106.75%
Senior Notes | 7.75% Senior Secured Notes Due 2021 | Subsequent Event
Debt Instrument [Line Items]
Extinguishment of debt								$ 835,000,000
Senior Notes | 6.125% Senior Secured Notes due 2025 | Subsequent Event
Debt Instrument [Line Items]
Interest rate	6.125%
Principal amount	$ 850,000,000
Net proceeds from issuance of debt								$ 831,100,000
Redemption price								101.00%
Indenture threshold for earnings for payment of dividends (less than)								$ 75,000,000
Secured leverage ratio requirement								3.0
Convertible Debt
Debt Instrument [Line Items]
Number of series outstanding | series												2
Term before record date to determine additional interest												3 years
Convertible Debt | 7.5% Variable Interest Senior Convertible Notes due 2019
Debt Instrument [Line Items]
Interest rate											7.50%	7.50%
Principal amount											$ 230,000,000
Net proceeds from issuance of debt											$ 218,900,000
Redemption prince in event of change as defined in indenture											100.00%
Partial interest rate of convertible debt											2.50%
Convertible Debt | 6.75% Variable Interest Senior Convertible Note due 2015
Debt Instrument [Line Items]
Interest rate			6.75%
Principal amount																						$ 50,000,000
Convertible principal balance				$ 25,000,000
Increase in equity from conversion												$ 25,000,000
Acceleration of interest expense related to debt conversion												$ 3,679,000
Convertible Debt | 6.75% Variable Interest Senior Convertible Exchange Notes due 2014
Debt Instrument [Line Items]
Interest rate					6.75%									6.75%				6.75%				6.75%
Convertible Debt | 5.5% Variable Interest Senior Convertible Debentures due 2020
Debt Instrument [Line Items]
Interest rate							5.50%					5.50%
Principal amount							$ 258,750,000
Net proceeds from issuance of debt							$ 250,300,000
Redemption prince in event of change as defined in indenture							100.00%
Partial interest rate of convertible debt							1.75%
Entity Affiliated with Dr. Frost | Convertible Debt | 6.75% Variable Interest Senior Convertible Note due 2015 | Common Stock | Affiliated Entity [Member]
Debt Instrument [Line Items]
Shares converted (in shares) | shares				2,455,876
Entity Affiliated with Dr. Frost | Convertible Debt | 6.75% Variable Interest Senior Convertible Exchange Notes due 2014 | Affiliated Entity [Member]
Debt Instrument [Line Items]
Interest rate																					6.75%
Principal amount																					$ 50,000,000
Convertible principal balance			$ 25,000,000		$ 25,000,000				$ 25,000,000
Entity Affiliated with Dr. Frost | Convertible Debt | 6.75% Variable Interest Senior Convertible Exchange Notes due 2014 | Common Stock | Affiliated Entity [Member]
Debt Instrument [Line Items]
Shares converted (in shares) | shares									2,455,877
Dr. Phillip Frost [Member] | Beneficial Owner
Debt Instrument [Line Items]
Ownership percentage by shareholders																				15.30%
Dr. Phillip Frost [Member] | Beneficial Owner | Subsequent Event
Debt Instrument [Line Items]
Ownership percentage by shareholders															15.30%