Income Taxes	6 Months Ended
Sep. 30, 2019
Income Taxes
Income Taxes	4.Income Taxes The effective tax rate used for interim periods is the estimated annual effective tax rate, based on current estimate of full year results, except that taxes related to specific events, if any, are recorded in the interim period in which they occur. Income tax expense for the three months ended September 30, 2019 was approximately $1,000, or (0.05%) of pre-tax loss as compared with an expense of approximately $4,000, or (0.3%) of pre-tax loss for the three months ended September 30, 2018. Income tax expense for the six months ended September 30, 2019 was approximately $25,000, or (0.67%) of pre-tax loss as compared with an expense of approximately $45,000, or (1.5%) of pre-tax loss for the six months ended September 30, 2018. In assessing the realizability of our deferred tax assets, we review all available positive and negative evidence, including reversal of deferred tax liabilities, potential carrybacks, projected future taxable income, tax planning strategies and recent financial performance. As we have experienced a cumulative pre-tax loss over the trailing three years, we continue to maintain a valuation allowance against our deferred tax assets.

4.Income Taxes

The effective tax rate used for interim periods is the estimated annual effective tax rate, based on current estimate of full year results, except that taxes related to specific events, if any, are recorded in the interim period in which they occur.

Income tax expense for the three months ended September 30, 2019 was approximately $1,000, or (0.05%) of pre-tax loss as compared with an expense of approximately $4,000, or (0.3%) of pre-tax loss for the three months ended September 30, 2018. Income tax expense for the six months ended September 30, 2019 was approximately $25,000, or (0.67%) of pre-tax loss as compared with an expense of approximately $45,000, or (1.5%) of pre-tax loss for the six months ended September 30, 2018.

In assessing the realizability of our deferred tax assets, we review all available positive and negative evidence, including reversal of deferred tax liabilities, potential carrybacks, projected future taxable income, tax planning strategies and recent financial performance. As we have experienced a cumulative pre-tax loss over the trailing three years, we continue to maintain a valuation allowance against our deferred tax assets.