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Sale of Oil and Gas Properties - Additional Information (Detail)
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 24, 2014
USD ($)
May. 21, 2014
USD ($)
a
Well
Dec. 13, 2013
USD ($)
a
Jan. 24, 2013
USD ($)
Unit
Feb. 28, 2014
USD ($)
Mar. 31, 2015
Mar. 31, 2014
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
Mcfe
Oil and Gas Properties [Line Items]                    
Sale of interests in non-core assets       $ 2,600,000     $ 259,543      
Overriding royalty interest on most of the wells       2.50%            
Number of wellbores operator assumed | Unit       300            
Production of wells Mcfe per day | Mcfe                   800
Overriding royalty interest retained           5.00%        
Lease acres owned by Company, net of curable and incurable title defects | a     1,114.8              
Lease acres owned by Company, gross | a     4,650              
Total lease acres excluded from sale due to incurable title defects | a     118.6              
Total lease acres owned by company excluded from sale due to incurable title defects | a     39.8              
Additional lease acres excluded from sale due to curable title defects | a     135.5              
Additional lease acres owned by Company excluded from sale due to curable title defects | a     30.7              
Expected additional amount due and payable to Company                 $ 200,000  
Cash received     $ 10,600,000         $ 259,544 $ 230,064  
Total purchase price     $ 36,300,000              
Cash received related to curable title defects         $ 489,608          
Purchase and Sale Agreement [Member]                    
Oil and Gas Properties [Line Items]                    
Membership interest in purchase and sale agreement   25.00%                
Portion of future leasehold expenditures   50.00%                
Purchase and Sale Agreement [Member] | Condition [Member]                    
Oil and Gas Properties [Line Items]                    
Membership interest in purchase and sale agreement   12.00%                
Republic PSA [Member]                    
Oil and Gas Properties [Line Items]                    
Cash received $ 10,700,000 $ 15,000,000                
Total purchase price $ 11,000,000                  
Undeveloped leasehold, net acres | a   2,239                
Number of wells drilled in Marshall County, West Virginia | Well   6                
Percentage of net profits to be received   25.00%                
Value of oil and gas properties to be repurchased   $ 15,000,000                
Republic PSA [Member] | Wetzel County West Virginia [Member]                    
Oil and Gas Properties [Line Items]                    
Percentage of over-riding royalty interest   1.50%                
Republic PSA [Member] | Marshall County West Virginia [Member]                    
Oil and Gas Properties [Line Items]                    
Percentage of over-riding royalty interest   1.00%