Goodwill (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Goodwill [Line Items]
Impairment loss for goodwill	$ 0	$ 0	$ 0	$ 0
Accumulated impairment of goodwill since the Merger	4,766,190,000		4,766,190,000
Agero, Inc. [Member]
Goodwill [Line Items]
Increase in goodwill due to adjustment			$ 554,000