CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 10,090	$ 8,475
Accounts receivable - trade	22,623	18,110
Restricted investments in U.S. Treasury Bonds-available for sale, at fair value	135	142
Other current assets	1,819	1,096
Total current assets	34,667	27,823
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 $17,751 and $20,507 as of September 30, 2013 and December 31, 2012)	330,427	301,599
Property and equipment-at cost, net	18,641	17,941
Restricted investments in U.S. Treasury Bonds-available for sale, at fair value	1,212	1,273
Other assets	3,967	4,108
Derivative financial instruments	52
Total other assets	354,299	324,921
Total assets	388,966	352,744
Current Liabilities
Current maturities of debentures and other long-term liabilities	1,386	1,790
Accounts payable and accruals	41,617	29,278
Derivative financial instruments	99	385
Total current liabilities	43,102	31,453
Long-Term Liabilities
Debentures, less current portion	1,472	1,472
Other long-term liabilities, less current portion	28,164	26,710
Derivative financial instruments		567
Line of credit	94,500	99,500
Total noncurrent liabilities	124,136	128,249
Commitments and Contingencies
Stockholders' Equity
8% convertible preferred stock, par value $.0001; authorized 10,000,000 shares, issued and outstanding, 10,703 shares in 2013 and 2012 (aggregate liquidation preference $128 in 2013 and 2012)	128	128
Common stock - $.0001 par value; authorized, 100,000,000 shares; issued 72,802,724 shares in 2013 and 72,440,898 shares in 2012	7	7
Additional paid-in-capital	469,760	468,406
Accumulated deficit	(248,386)	(275,058)
Accumulated other comprehensive income, net of applicable income taxes of $143 in 2013 and $188 in 2012	219	287
Total stockholders' equity including common stock in Treasury	221,728	193,770
Less common stock in Treasury-at cost; 632,250 shares in 2012		728
Total stockholders' equity	221,728	193,042
Total liabilities and stockholders' equity	$ 388,966	$ 352,744