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Income Taxes (Notes) | 6 Months Ended
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Jun. 30, 2019
Income Tax Disclosure [Abstract] |
Income Tax Disclosure [Text Block] | Note J – Income Taxes The Company’s provision for income taxes for the three and six months ended June 30, 2019 and 2018, respectively, is based on the estimated annual effective tax rate, plus or minus discrete items. The following table presents the provision for income taxes and the effective tax rates for the three and six months ended June 30, 2019 and 2018:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Income before provision for income taxes | $ | 45,895 |  |  | $ | 42,617 |  |  | $ | 91,747 |  |  | $ | 79,771 |
Provision for income taxes | $ | 9,784 |  |  | $ | 10,172 |  |  | $ | 20,371 |  |  | $ | 18,128 |
Effective tax rate | 21.3 | % |  | 23.9 | % |  | 22.2 | % |  | 22.7 | %
The primary differences between the Company’s effective tax rates for the three and six months ended June 30, 2019 and 2018 are due to a decrease in the amount of Global Intangible Low-Taxed Income (“GILTI”) tax incurred, a decrease in the state taxes incurred, and a partially offsetting increase in 2019 pre-tax income in jurisdictions with high tax rates. The Company recognizes interest and penalties, if any, related to uncertain income tax positions in income tax expense. Accrued interest and penalties on unrecognized tax benefits and interest and penalty expense was immaterial to the consolidated financial statements for all periods presented. The unrecognized tax benefits have not materially changed for the six months ended June 30, 2019. The Company files income tax returns in the U.S., for federal, state, and local purposes, and in certain foreign jurisdictions. The Company's tax years 2015 through 2018 remain open to examination by most taxing authorities. During 2017, the U.S. Internal Revenue Service completed its audit of the Company's 2014 U.S. income tax return.

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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 + Details
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