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Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Taxes
Income Taxes	10. Income taxes There is no provision for income taxes for the three and nine-month periods ended September 30, 2018. No income tax benefit can be recognized in these periods due to uncertainty about the Company’s ability to generate taxable income in future periods. The provision for income taxes for the three and nine months ended September 30, 2017 represents the interim period tax allocation of the federal and state alternative minimum tax based on the Company’s projected year-end effective income tax rates which cannot be offset by the Company’s net operating loss carryforwards. The Company has a federal income tax receivable of $1.5 million at September 30, 2018 related to refundable alternative minimum tax credits. As of September 30, 2018, the Company’s deferred income tax assets, consisting primarily of net operating loss and tax credit carryforwards, have been fully offset by a valuation allowance.

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- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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