Commitments (Tables)

12 Months Ended

Dec. 31, 2011

Commitments

Future minimum commitments under Fan Pier Leases and facilitiy operating leases with terms of more than one year, net of estimated sublease income

Year	Fan Pier Leases		Kendall Square Lease		Sublease Income			Other Operating Leases		Total Lease Commitments (Net of Sublease Income)
	(in thousands)
2012	$	—	$	18,260	$	(7,850	)	$	36,455	$	46,865
2013		—		18,260		(8,424	)		37,942		47,778
2014		67,206		18,260		(8,424	)		29,025		106,067
2015		67,206		18,260		(3,942	)		22,678		104,202
2016		67,206		18,260		—			4,611		90,077
Thereafter		887,211		24,346		—			10,018		921,575
Total minimum lease payments	$	1,088,829	$	115,646	$	(28,640	)	$	140,729	$	1,316,564