NOTE 12   COMMITMENTS AND CONTINGENCIES (a) Lease Obligations In the first quarter of 2014, the Company entered into the Fifth Amendment to its headquarters lease agreement in San Francisco, California, pursuant to which it leased approximately 29,000 additional square feet of office space. The Company is entitled to approximately $0.9 million of tenant improvement allowances pursuant to the Fifth Amendment. In connection with the execution of the Fifth Amendment, the Company delivered to the lessor a letter of credit collateralized by restricted cash totaling $2.1 million. In total, at September 30, 2014, the Company leased approximately 127,000 square feet of office space pursuant to the agreement, as amended, which expires in June 2019. Lease commitments pursuant to the Fifth Amendment total approximately $9.6 million over the term of the lease. There were no other changes to the Company s lease obligations from that disclosed in the Company s Annual Report other than a reduction of 2014 lease obligations due to the payment of current year lease payments. Future operating lease obligations as of September 30, 2014 are as follows: Operating Leases Years Ending December 31, Remainder of 2014 $ 1,975 2015 8,008 2016 8,170 2017 8,334 2018 8,499 2019 and thereafter 4,405 Total minimum lease payments $ 39,391 The Company is considered the  accounting owner  for a build-to-suit property and has recorded a build-to-suit lease obligation on its September 30, 2014 consolidated balance sheet. Additional information regarding the build-to-suit lease obligation is included in Note 6,  Build-To-Suit Lease Obligation.  Expected future lease payments under the build-to-suit lease as of September 30, 2014 are as follows: Expected Cash Payments Under Build- To-Suit Lease Obligation Years Ending December 31, Remainder of 2014 $ 349 2015 2,435 2016 2,537 2017 2,614 2018 2,692 2019 and thereafter 16,935 Total minimum lease payments $ 27,562 (b) Restricted Cash At September 30, 2014, the Company had outstanding letters of credit co