Note 5. Income Taxes	3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	We recognized an income tax expense of $13,000 and a benefit of $10,000 for the three-month periods ended March 31, 2019 and 2018, respectively. At the end of each interim period, we estimate the effective tax rate we expect to be applicable for the full fiscal year and this rate is applied to our results for the year-to-date period, and then adjusted for any discrete period items. For the three-month periods ended March 31, 2019 and 2018, the variance between the Company’s effective tax rate and the U.S. statutory rate of 21% is primarily attributable to excess stock-based compensation tax benefits of $35,000 and $73,000, respectively, recognized in income tax expense (benefit) during the periods, as well as, tax credits offset by state income taxes.

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.

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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