Notes Payable, Long-Term Debt and Other Obligations (Convertible Notes Table) (Details) (Convertible Debt [Member], USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended
	Feb. 03, 2015	Mar. 31, 2015
Debt Instrument [Line Items]
Conversion basis amount		$ 1
6.75% Variable Interest Senior Convertible Note due 2014 - Vector
Debt Instrument [Line Items]
Note conversion (in shares)	2,227,552
Variable Interest 7.50% Senior Convertible Debentures [Member]
Debt Instrument [Line Items]
Conversion price		$ 16.78
Note conversion (in shares)		59.5946
5.5% Variable Interest Senior Convertible Notes due 2020
Debt Instrument [Line Items]
Conversion price		$ 25.87
Note conversion (in shares)		38.6563