Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details)

v2.4.0.8
Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) (Consolidated Gross Revenues [Member])
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Consolidated Gross Revenues [Member]
     
Concentration risk, customer 0 0 0
Concentration risk, percentage 10.00%