Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Customer Segment	Dec. 31, 2012 Customer acre	Dec. 31, 2011 Customer acre
Segment Reporting Information [Line Items]
Number of business segments	3
Number of customer who contributed more than 10 percent of revenue	0	0	1
Concentration Risk, Percentage	10.00%		10.00%
Area of Land sold			9,700
Real Estate [Member]
Segment Reporting Information [Line Items]
Revenues			$ 17,980