Income Taxes (Details)	6 Months Ended
	Jun. 30, 2012
Internal Revenue Service (IRS) [Member]
Tax Years Subject To Examination By Major Jurisdictions
Tax Year	2005
New York State [Member]
Tax Years Subject To Examination By Major Jurisdictions
Tax Year	2008
New York City [Member]
Tax Years Subject To Examination By Major Jurisdictions
Tax Year	2011
United Kingdom [Member]
Tax Years Subject To Examination By Major Jurisdictions
Tax Year	2006
Italy [Member]
Tax Years Subject To Examination By Major Jurisdictions
Tax Year	2007