Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Abstract]
Impairment of goodwill	$ 29,700	$ 0	$ 29,748	$ 0	[1]

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