Commitments and Contingencies - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2013 acre
Commitments And Contingencies Disclosure [Abstract]
Total farmable area of Colding loop property	181
Area for installation of irrigation equipment	121
Estimated irrigation costs	$ 400,000
Estimated expended irrigation costs	39,000
Additional leased farm land	60
Additional estimated irrigation costs	$ 300,000