Notes Payable, Long-Term Debt and Other Obligations (Convertible Notes Table) (Details) - Convertible Debt [Member] - USD ($)		6 Months Ended	12 Months Ended
	Feb. 03, 2015	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Conversion basis amount		$ 1,000
6.75% Variable Interest Senior Convertible Note due 2014 - Vector
Debt Instrument [Line Items]
Conversion price		$ 0.00	$ 11.22
Note conversion (in shares)	2,227,552	0	89.1021
Variable Interest 7.50% Senior Convertible Debentures [Member]
Debt Instrument [Line Items]
Conversion price		$ 16.78	$ 16.78
Note conversion (in shares)		59.5946	59.5946
5.5% Variable Interest Senior Convertible Notes due 2020
Debt Instrument [Line Items]
Conversion price		$ 25.87	$ 25.87
Note conversion (in shares)		38.6563	38.6563