(13) Commitments and Contingencies (a) Operating leases We lease office space and certain equipment under operating leases having terms that expire at various dates through May 2025. On June 10, 2013, we entered into an amended and restated office lease, which superseded and replaced our lease for our corporate headquarters located in Boulder, Colorado. In addition to the office space we currently occupy, the amended and restated office lease provides for the lease by us of an additional 89,000 square feet of office space in a building to be constructed adjacent to our current office space. The initial term of the amended and restated office lease is ten years and will commence upon the occupancy date of the new building, currently expected to be on or about June 1, 2015, and extend through May 31, 2025, in each case subject to change based on the construction schedule. The lease term for the current office space has been extended to end contemporaneously with the end of the initial term for the amended and restated office lease. We have the option to extend the term of the lease for two periods of five years each. In September 2013, and as required in the amended and restated office lease, we placed $4.2 million in a bank account that is pledged to the landlord as a security deposit. This restricted cash is reflected as restricted long-term cash on our balance sheet. Provided that we have not been in default under the amended and restated office lease and have met certain financial covenants during the five-year period commencing upon our occupancy of the new building, we have the right to reduce the cash security deposit to $2.1 million. The amended and restated lease also provides us with a tenant finish allowance of approximately $4.6 million. We occupy additional leased facilities of approximately 22,000 square feet in Denver, Colorado, 10,000 square feet in Raleigh, North Carolina and approximately 5,200 square feet in the Seattle, Washington area. In May 2014, we executed an agreement to sublease approxima