Summary of Significant Accounting Policies - Summary of Interest Incurred and Capitalized and Interest Expensed for Units Settled (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Total interest incurred and capitalized	$ 1,884	$ 351
Total real estate taxes incurred and capitalized	181	150
Total interest and real estate taxes incurred and capitalized	2,065	501
Interest expensed as a component of cost of sales	2,146	2,065
Real estate taxes expensed as a component of cost of sales	311	189
Interest and real estate taxes expensed as a component of cost of sales	$ 2,457	$ 2,254