Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v2.4.0.8
Related Party Transactions - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Related Party Transaction [Line Items]      
Consulting fees     $ 40,000
Related party expenses 36,000 36,000 36,000
Apache [Member]
     
Related Party Transaction [Line Items]      
Revenue from affiliated 40,800,000 31,200,000  
GD [Member]
     
Related Party Transaction [Line Items]      
Revenue from affiliated 200,000    
Ranch Lease Agreement [Member]
     
Related Party Transaction [Line Items]      
Number of ranch lease agreements 2    
Ranch Lease Agreement [Member] | Cypress Springs Ranch [Member]
     
Related Party Transaction [Line Items]      
Fees pursuant to the ranch lease agreements for right to utilize premises of ranches 14,281 39,875  
Ranch Lease Agreement [Member] | Camp Verde Ranch [Member]
     
Related Party Transaction [Line Items]      
Fees pursuant to the ranch lease agreements for right to utilize premises of ranches   $ 1,650