Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property and equipment not subject to amortization	$ 11,466	$ 10,784
Common stock shares issued	52,834,000us-gaap_CommonStockSharesIssued	52,900,000us-gaap_CommonStockSharesIssued
Common stock shares outstanding	52,834,000us-gaap_CommonStockSharesOutstanding	52,900,000us-gaap_CommonStockSharesOutstanding
Treasury Stock	72,000us-gaap_TreasuryStockShares	72,000us-gaap_TreasuryStockShares
Series C Preferred Stock [Member]
Preferred stock liquidation preference	14,800	14,800
Series B Preferred Stock [Member]
Preferred stock liquidation preference	$ 1,971	$ 1,971

The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs.

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