10. Commitments and Contingencies On October 3, 2003, we entered into a sale-leaseback transaction whereby the Company sold and leased back a facility located in Garden City, New York. The lease is classified as an operating lease. Net proceeds from the sale of the facility were $13,991 and the cost and related accumulated depreciation of the facility of $9,472 and $4,595, respectively, were removed from the Consolidated Balance Sheet at the time of sale. The gain realized on the sale of $9,114 has been deferred and is being amortized over the 20-year lease term. The unamortized balance of the deferred gain as of May 31, 2011 is $5,688 and is included in other liabilities and deferred income on the Consolidated Balance Sheet. In addition to the Garden City lease, we lease other facilities and equipment under agreements that are classified as operating leases that expire at various dates through 2034. Under the terms of one of the facility lease agreements, we are entitled to receive rent credits as we increase the space we occupy. During fiscal 2011, 2010 and 2009, we received $34, $47 and $450, respectively, of such rent credits and in accordance with applicable accounting standards, we are treating the rent credits as lease incentives, which are being amortized over the term of the lease. Future minimum payments under all operating leases at May 31, 2011 are as follows: Year Facilities and Equipment 2012 $ 19,173 2013 17,837 2014 13,422 2015 10,894 2016 8,290 2017 and thereafter 33,077 Rental expense during the past three fiscal years was as follows: For the Year Ended May 31, 2011 2010 2009 Facilities and Equipment $ 27,853 $ 23,232 $ 22,644 Aviation Equipment ? 792 3,204 During fiscal 2008, we completed a sale-leaseback transaction with a financial institution to finance an aircraft under a capital lease. Proceeds were approximately $12,880. The gross asset balance and accumulated depreciation of this aircraft as of May 31, 2011 is $11,321 and $2,254, respectively, and is included in equipment on long-term le