Operating Leases and Subleases

12 Months Ended

Dec. 31, 2011

Operating Leases and Subleases

Operating Leases and Subleases

8. Operating Leases and Subleases

        The Company entered into amendments to its South San Francisco, CA facility leases in June 2010. These amendments extend the lease terms through May 2020 and the Company may extend the terms for two additional five-year periods. The leases are for two buildings of approximately 110,000 and 40,000 square feet.

        The Company leases its South San Francisco, California, facilities under a non-cancelable operating lease. Future minimum lease payments under this lease, exclusive of executory costs, at December 31, 2011, were as follows:

(in thousands)
Years ending December 31:
2012	$	5,429
2013		5,029
2014		4,859
2015		5,005
2016		5,156
Thereafter		18,806
Total	$	44,284

        Expenses and income associated with operating leases were as follows:

	Year Ended December 31,
(in thousands)	2011			2010			2009
Rent expense	$	6,702		$	6,779		$	6,559
Sublease income, net		(637	)		(622	)		(580	)

        As of December 31, 2011, the Company expects to receive up to $0.2 million of minimum rentals through the end of a non-cancelable sublease in March 2012.