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Commitments and Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2013
Commitments And Contingencies Disclosure [Abstract] |
Table Presents Our Estimated Future Minimum Rental Payments Under Operating Leases with Non-Cancelable Lease Terms | The following table presents our estimated future minimum rental payments under all operating leases with non-cancelable lease terms having initial terms in excess of one year as of June 30, 2013 (in thousands):
|  | Total Payments |
2013 (remaining six months) |  | $ | 5,125 |
2014 |  |  | 8,494 |
2015 |  |  | 5,774 |
2016 |  |  | 10,598 |
2017 |  |  | 10,598 |
2018 and thereafter |  |  | 130,008 |
Total (1) |  | $ | 170,597 |
(1) | Excludes spending on anticipated leasehold improvements on our Needham, Massachusetts lease, including design, development, construction costs, the purchase and installation of equipment, and receipt of related Landlord incentives which we estimate will begin in October 2014.

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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