Related Party Transactions - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction Due From To Related Party [Line Items]
Revenue from contracts with affiliated entities	$ 45,000,000	$ 17,400,000	$ 0
Operating Margin	42,074,000	40,832,000	40,693,000
Distributions payable to the owners		500,000
General contracting and real estate services
Related Party Transaction Due From To Related Party [Line Items]
Operating Margin	1,500,000	1,200,000	0
Guaranteed by related party
Related Party Transaction Due From To Related Party [Line Items]
Indebtedness, carrying value		$ 154,800,000