CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 1,834	$ 11,620
Accounts receivable - trade	13,460	21,874
Restricted investments in U.S. Treasury Bonds-available for sale, at fair value	135	131
Other current assets	4,086	1,859
Total current assets	19,515	35,484
Other Assets
Oil and gas properties-at cost, based on full cost method of accounting, net of accumulated depreciation, depletion and amortization (includes unproved properties excluded from amortization of $17,630 and $18,015 as of March 31, 2014 and December 31, 2013)	332,242	335,354
Property and equipment-at cost, net	18,714	18,772
Restricted investments in U.S. Treasury Bonds-available for sale, at fair value	1,214	1,183
Other assets	3,914	3,969
Derivative financial instruments	88	43
Total other assets	356,172	359,321
Total assets	375,687	394,805
Current Liabilities
Current maturities of debentures and other long-term liabilities	2,144	1,936
Accounts payable and accruals	25,512	39,174
Derivative financial instruments	2,755	3,517
Total current liabilities	30,411	44,627
Long-Term Liabilities
Debentures, less current portion	1,472	1,472
Other long-term liabilities, less current portion	28,389	28,113
Line of credit	80,500	94,500
Total noncurrent liabilities	110,361	124,085
Commitments and Contingencies
Stockholders' Equity
8% convertible preferred stock, par value $.0001; authorized 10,000,000 shares, issued and outstanding, 10,703 shares in 2014 and 2013 (aggregate liquidation preference $128 in 2014 and 2013)	128	128
Common stock - $.0001 par value; authorized, 100,000,000 shares; issued 73,550,539 shares in 2014 and 72,887,650 shares in 2013	7	7
Additional paid-in-capital	471,041	470,441
Accumulated deficit	(236,462)	(244,673)
Accumulated other comprehensive income, net of applicable income taxes of $132 in 2014 and $124 in 2013	201	190
Total stockholders' equity	234,915	226,093
Total liabilities and stockholders' equity	$ 375,687	$ 394,805