Related Party Transactions (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended			12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 12, 2011	Dec. 31, 2013 Existing Shareholders	Dec. 11, 2009 Existing Shareholders	Dec. 31, 2012 Required Earnout Payments Sargent
Related Party Transaction [Line Items]
Annual advisory fee			$ 0.1
Payments made	$ 0.2	$ 0.9				$ 0.8
Period of warrant				8 years
Related party securities called by warrants					1,388,620
Warrants exercised				559,930
Warrant outstanding				274,362