Note 9.

Income Taxes

The Company’s year-to-date effective income tax rate at March 31, 2016 and 2015 was 17.1% and 13.6%, respectively. The variations between the Company’s effective tax rate and the U.S. statutory rate of 35.0% were primarily due to the consolidation of the Company’s foreign operations, which are subject to income taxes at lower statutory rates.

U.S. GAAP clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements and prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. As of March 31, 2016 and June 30, 2015, the Company’s gross unrecognized income tax benefit was $4.6 million and $4.0 million, respectively. The Company has classified the uncertain tax positions as noncurrent income tax liabilities, as the amounts are not expected to be paid within one year. If recognized, substantially all of the gross unrecognized tax benefits at March 31, 2016 would impact the effective tax rate. The Company recognizes interest and penalties related to uncertain tax positions in the income tax provision on the Condensed Consolidated Statements of Earnings. The amount of accrued interest and penalties included in the $4.6 million and $4.0 million of gross unrecognized income tax benefit at March 31, 2016 and June 30, 2015, respectively, was immaterial. Fiscal years 2013 to 2015 remain open to examination by the United States Internal Revenue Service, fiscal years 2011 to 2015 remain open to examination by certain state jurisdictions, and fiscal years 2008 to 2015 remain open to examination by certain foreign taxing jurisdictions. The Company’s fiscal year 2011 and 2012 California state income tax returns are currently under examination by the state of California’s Franchise Tax Board. The Company’s fiscal year 2012 and 2013 German income tax returns are currently under examination by the Federal Central Tax Office in Germany.