XML 139 R82.htm IDEA: XBRL DOCUMENT v2.4.0.8
Common Stock Plans (Other Plans) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Stock Equivalent Units | Petrotech Incentive Plan
       
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Outstanding, Beginning of Period, Shares 141,243 11,061 8,205 173,292
Paid, Shares (36,792) (3,281) (1,914)  
Forfeited (26,529) (13,476) (1,544)  
Share-based compensation expense $ 6,200,000 $ 2,600,000 $ 200,000  
Stock Equivalent Units | Petrotech Incentive Plan | Three years vesting period
       
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Granted 92,418 102,349 6,314  
Share-based compensation, vesting period 3 years      
Stock Equivalent Units | Petrotech Incentive Plan | Two years vesting period
       
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Granted   3,768    
Share-based compensation, vesting period 2 years      
Stock Equivalent Units | Petrotech Incentive Plan | 18-months vesting period
       
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Granted   40,822    
Share-based compensation, vesting period 18 months      
Stock Equivalent Units | Petrotech Incentive Plan | 17-month vesting period
       
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Granted 2,952      
Share-based compensation, vesting period 17 months      
Management | 1997 Deferred Compensation Plan
       
Deferred Compensation Arrangements [Abstract]        
Deferred compensation, reserved for issuance 695,140     695,140
Director | Stock options | 1992 Energen Corporation Directors Stock Plan
       
Deferred Compensation Arrangements [Abstract]        
Granted, Shares 13,500 11,120 12,420  
Number of shares remaining for issuance 138,284