Other Assets (Schedule Of Other Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Assets, Noncurrent Disclosure [Abstract]
Plugging and abandonment escrow account on the WCBB properties (Note 11)	$ 3,105	$ 3,113
Certificates of Deposit securing letter of credit	275	275
Prepaid drilling costs	526	515
Loan commitment fees	9,341	9,388
Derivative receivable	4,493	0
Deposits	34	4
Other	77
Other assets	$ 17,851	$ 13,295