Common Stock Options, Warrants And Changes In Capitalization (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
9 Months Ended | 0 Months Ended | 0 Months Ended | ||||||
---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2013
|
Sep. 30, 2012
|
Feb. 15, 2013
Utica Shale [Member]
acre
|
Dec. 24, 2012
Utica Shale [Member]
acre
|
Dec. 19, 2012
Utica Shale [Member]
acre
|
Dec. 17, 2012
Utica Shale [Member]
acre
|
Feb. 15, 2013
Common Stock [Member]
Public Offering [Member]
|
Jan. 07, 2013
Common Stock [Member]
Public Offering [Member]
|
Dec. 24, 2012
Common Stock [Member]
Public Offering [Member]
|
|
Common Stock Options, Restricted Stock, Warrants And Changes In Capitalization [Line Items] | |||||||||
Issuance of common stock in public offering (shares) | 8,912,500 | 11,750,000 | |||||||
Stock option, portion available to underwriters (shares) | 1,650,000 | ||||||||
Stock option, portion attributable to underwriters (shares) | 900,000 | 750,000 | |||||||
Share price (usd per share) | $ 38.00 | $ 38.00 | |||||||
Proceeds from issuance of common stock, net of offering costs | $ 359,040 | $ 325,800 | $ 460,700 | $ 325,800 | $ 460,700 | ||||
Gas and oil acreage, undeveloped, net | 22,000 | 37,000 | 7,000 | 30,000 |