Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Cleaning/ Security/ Messenger and Restoration Services Through Alliance Building Services, or Alliance, First Quality Maintenance, L.P., or First Quality, provides cleaning, extermination and related services, Classic Security LLC provides security services, Bright Star Couriers LLC provides messenger services, and Onyx Restoration Works provides restoration services with respect to certain properties owned by us. Alliance is partially owned by Gary Green, a son of Stephen L. Green, the chairman of SL Green's board of directors. In addition, First Quality has the non-exclusive opportunity to provide cleaning and related services to individual tenants at our properties on a basis separately negotiated with any tenant seeking such additional services. An affiliate of ours has entered into an arrangement with Alliance whereby it will receive a profit participation above a certain threshold for services provided by Alliance to certain tenants at certain buildings above the base services specified in their lease agreements. Income earned from profit participation, which is included in other income on the consolidated statements of operations, was $3.3 million, $3.3 million and $3.0 million for the years ended December 31, 2015, 2014 and 2013 respectively. We also recorded expenses of $9.9 million, $9.1 million and $9.9 million for the years ended December 31, 2015, 2014 and 2013 respectively, for these services (excluding services provided directly to tenants). Allocated Expenses from SL Green Property operating expenses include an allocation of salary and other operating costs from SL Green based on square footage of the related properties. Such amount was approximately $10.4 million, $9.8 million and $9.1 million for the years ended December 31, 2015, 2014 and 2013, respectively. Insurance We obtain insurance coverage through an insurance program administered by SL Green. In connection with this program, we incurred insurance expense of approximately $6.6 million, $6.4 million and $6.2 million for the years ended December 31, 2015, 2014 and 2013 respectively. Related Party Receivable from SL Green On July 22, 2015, our parent company issued a promissory note to us in the amount of $90.0 million, which bears interest at an annual rate of 6.0%, compounded quarterly, and matures on July 22, 2017.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.