XML 65 R11.htm IDEA: XBRL DOCUMENT v2.4.0.6
Cash collateral pledged
3 Months Ended
Mar. 31, 2013
Cash and Cash Equivalents [Abstract]  
Cash collateral pledged
Cash collateral pledged
As of March 31, 2013 and December 31, 2012, the Company pledged cash collateral in the amount of $10.9 million and $9.2 million, respectively, which primarily relates to (a) a bond held as collateral on a letter of credit and (b) letters of credit issued to the landlord of the Company's premises in New York City (see Note 14).