Income Taxes	9 Months Ended
Sep. 30, 2011
Income Taxes [Abstract]
Income Taxes	(11) Income Taxes Income tax expense (benefit) attributable to loss from continuing operations was approximately $64,000 and $86,000 for the three months ended September 30, 2011 and 2010, respectively, and ($4.6) million and $564,000 for the nine months ended September 30, 2011 and 2010, respectively. Also included in the three months ended June 30, 2011 was a current tax benefit related to a tax refund received as a result of a tax law change that allowed us to carry-back operating losses to a period in which we previously paid tax. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future results of operations, and tax planning strategies in making this assessment. Based upon the level of historical taxable income, significant book losses during the current and prior periods, and projections for future results of operations over the periods in which the deferred tax assets are deductible, among other factors, management continues to conclude that the Company does not meet the “more likely than not” requirement of ASC 740 in order to recognize deferred tax assets and a valuation allowance has been recorded for the Company’s net deferred tax assets at September 30, 2011. During the three months ended September 30, 2011 and 2010, DHS recorded net operating losses and as of September 30, 2011 DHS’s deferred tax assets exceeded its deferred tax liabilities. Accordingly, based on significant recent operating losses and projections for future results, a valuation allowance was recorded for DHS’s net deferred tax assets. For the three and nine months ended September 30, 2011, the Company recorded a tax benefit of $174,000 and $5.0 million, respectively, due to a non-cash income tax benefit related to income from discontinued operations and gains from the sale of discontinued oil and gas operations. Generally accepted accounting principles, or GAAP, require all items be considered, including items recorded in discontinued operations, in determining the amount of tax benefit that results from a loss from continuing operations that should be allocated to continuing operations. In accordance with GAAP, the Company recorded a tax benefit on its loss from continuing operations, which was exactly offset by income tax expense on discontinued operations. The Company’s net deferred tax position at September 30, 2011 is not impacted by this tax allocation. During the remainder of 2011 and thereafter, the Company will continue to assess the realizability of its deferred tax assets based on consideration of actual and projected operating results and tax planning strategies. Should actual operating results improve, the amount of the deferred tax asset considered more likely than not to be realizable could be increased. Such a change in the assessment of realizability could result in a decrease to the valuation allowance and corresponding income tax benefit, both of which could be significant. During the three and nine months ended September 30, 2011 and 2010, no adjustments were recognized for uncertain tax benefits.

(11) Income Taxes

Income tax expense (benefit) attributable to loss from continuing operations was approximately $64,000 and $86,000 for the three months ended September 30, 2011 and 2010, respectively, and ($4.6) million and $564,000 for the nine months ended September 30, 2011 and 2010, respectively. Also included in the three months ended June 30, 2011 was a current tax benefit related to a tax refund received as a result of a tax law change that allowed us to carry-back operating losses to a period in which we previously paid tax.

In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future results of operations, and tax planning strategies in making this assessment. Based upon the level of historical taxable income, significant book losses during the current and prior periods, and projections for future results of operations over the periods in which the deferred tax assets are deductible, among other factors, management continues to conclude that the Company does not meet the “more likely than not” requirement of ASC 740 in order to recognize deferred tax assets and a valuation allowance has been recorded for the Company’s net deferred tax assets at September 30, 2011.

During the three months ended September 30, 2011 and 2010, DHS recorded net operating losses and as of September 30, 2011 DHS’s deferred tax assets exceeded its deferred tax liabilities. Accordingly, based on significant recent operating losses and projections for future results, a valuation allowance was recorded for DHS’s net deferred tax assets.

For the three and nine months ended September 30, 2011, the Company recorded a tax benefit of $174,000 and $5.0 million, respectively, due to a non-cash income tax benefit related to income from discontinued operations and gains from the sale of discontinued oil and gas operations. Generally accepted accounting principles, or GAAP, require all items be considered, including items recorded in discontinued operations, in determining the amount of tax benefit that results from a loss from continuing operations that should be allocated to continuing operations. In accordance with GAAP, the Company recorded a tax benefit on its loss from continuing operations, which was exactly offset by income tax expense on discontinued operations. The Company’s net deferred tax position at September 30, 2011 is not impacted by this tax allocation.

During the remainder of 2011 and thereafter, the Company will continue to assess the realizability of its deferred tax assets based on consideration of actual and projected operating results and tax planning strategies. Should actual operating results improve, the amount of the deferred tax asset considered more likely than not to be realizable could be increased. Such a change in the assessment of realizability could result in a decrease to the valuation allowance and corresponding income tax benefit, both of which could be significant.

During the three and nine months ended September 30, 2011 and 2010, no adjustments were recognized for uncertain tax benefits.