Credit Facilities and Mortgage Notes Payable - Santa Clara Bridge Loan - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended		12 Months Ended
	Dec. 31, 2013	Nov. 30, 2012	Dec. 31, 2013
Debt Instrument [Line Items]
Loan agreement, maturity date			Dec. 31, 2013
Santa Clara Bridge Loan [Member]
Debt Instrument [Line Items]
Loan agreement amount of loan		$ 50.00
Interest rate description			LIBOR plus 3.50%
Debt instrument variable interest rate percentage		3.50%
Loan agreement, maturity date	May 01, 2013