Capital Stock (Tables)
12 Months Ended
Dec. 31, 2015
Stockholders Equity Note [Abstract]  
Schedule of Issuances And Forfeitures Of Common Shares

The following table provides information regarding the issuances and forfeitures of the Company's common stock pursuant to the Gastar Exploration Inc. Long-Term Incentive Plan for the periods indicated: 

 

 

 

For the Years Ended December 31,

 

 

 

2015

 

 

2014

 

Other stock issuances:

 

 

 

 

 

 

 

 

Shares of restricted common stock granted

 

 

1,426,604

 

 

 

601,473

 

Shares of restricted common stock vested

 

 

1,422,670

 

 

 

1,915,242

 

Shares of common stock issued pursuant to PBUs vested,

   net of forfeitures

 

 

497,636

 

 

 

472,189

 

Stock options exercised

 

 

 

 

 

7,500

 

Shares of restricted common stock surrendered upon

   vesting/exercise(1)

 

 

413,333

 

 

 

612,612

 

Shares of restricted common stock forfeited

 

 

119,499

 

 

 

47,398

 

 

(1)

Represents shares of common stock forfeited in connection with the payment of estimated withholding taxes on shares of restricted common stock that vested and with the payment of the exercise price and estimated withholding taxes on option exercises during the period.