Other Assets (Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill	$ 62,016	$ 29,990
Goodwill, Acquired During Period	32,026
Olefins [Member]
Goodwill [Line Items]
Goodwill	29,990	29,990
Goodwill, Acquired During Period	0
Vinyls [Member]
Goodwill [Line Items]
Goodwill	32,026	0
Goodwill, Acquired During Period	$ 32,026