Restructuring Liabilities (Details)	12 Months Ended		6 Months Ended
	Dec. 31, 2011 sqft	Dec. 31, 2003 Kendall Restructuring	Jun. 30, 2014 Fan Pier Move Restructuring sqft
Restructuring Cost and Reserve [Line Items]
Area of leased property (in square feet)	1,100,000		120,000
Lease term (in years)		15 years