Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended				12 Months Ended			1 Months Ended		12 Months Ended
	Jul. 31, 2012	Sep. 30, 2012	Dec. 31, 2013 sqft	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Construction Commitment [Member] acre	Dec. 31, 2013 Construction Commitment [Member] RaceTrac [Member] acre	Dec. 31, 2013 Construction Commitment [Member] Williamson Crossing [Member] acre	Sep. 30, 2013 Construction Commitment [Member] Williamson Business Park [Member] sqft	Sep. 30, 2013 Construction Commitment [Member] Williamson Business Park [Member] Office Building [Member] Buildings sqft	Dec. 31, 2013 FM Bayberry Cove Holding, LLC [Member] acre	May 31, 2010 FM Bayberry Cove Holding, LLC [Member]
Loss Contingencies [Line Items]
Rental expense under operating leases	$ 250,000		$ 402,000	$ 666,000	$ 902,000
Settlement reserve accrued		611,691
Additional reserve reflect value of additional underdeveloped acres and cost				723,058
Trial continuation date			2014-04
Claim of lien on real property													3,800,000
Summary judgment of foreclosure hearing date			Jan. 12, 2012
Area of real estate property			740,000				19.6	3.4	23		30,720	600
Company's foreclosure sale date												Jan. 29, 2014
Claim for un-reimbursed costs and accrued interest												4,700,000
Number of buildings											2
Area of first lease										7,700
Total commitments							1,100,000
Total estimated costs of construction buildings and tenant improvements										2,100,000
Estimated cost of construction, current year			987,303				987,000
Estimated cost for improvements								1,260,000
Percentage of cost paid								77.50%
Actual cost paid for the next five years							976,500
Cash deposited related to improvements			283,500				283,500
Reimbursement period of land improvement cost							5 years
Remaining maximum commitment						$ 693,000