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Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2018
Schedule of Effective Income Tax Rate Reconciliation | The Tax Reform Act reduced the U.S. federal statutory rate from 35% to 21% effective January 1, 2018 and had a significant impact on our effective tax rate during the three and six months ended June 30, 2018 as compared with the three and six months ended June 30, 2017. We have presented the primary components impacting our effective tax rate as follows:
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
U.S. federal statutory rate |  |  | 21.0 | % |  |  | 35.0 | % |  |  | 21.0 | % |  |  | 35.0 | %
Difference between foreign statutory rate and U.S. statutory rate |  |  | 1.0 | % |  |  | (1.6 | )% |  |  | 1.2 | % |  |  | (1.7 | )%
Excess tax benefits recognized on share-based compensation |  |  | (0.6 | )% |  |  | (1.0 | )% |  |  | (1.2 | )% |  |  | (2.5 | )%
Tax on global intangible low-taxed income under the provisions of the Tax Reform Act |  |  | 0.9 | % |  |  | — | % |  |  | 1.0 | % |  |  | — | %
Updates to the provisional amount recognized for the one-time mandatory deemed repatriation of Canadian earnings required by the Tax Reform Act |  |  | — | % |  |  | — | % |  |  | (0.9 | )% |  |  | — | %
Other |  |  | 1.5 | % |  |  | 2.1 | % |  |  | 1.4 | % |  |  | 1.9 | %
Effective tax rate |  |  | 23.8 | % |  |  | 34.5 | % |  |  | 22.5 | % |  |  | 32.7 | %
Accounting Standards Update 2014-09 [Member] |
Schedule of Cumulative Effect Adjustment of Balance Sheet | Specifically, the cumulative effect adjustment recognized as of January 1, 2018 increased the following balance sheet line items:
|  | January 1, 2018 |
|  | (In thousands) |
Agent balances, due premiums and other receivables |  | $ | 45,730 |
Other liabilities |  |  | 14,400 |
Income taxes (Liabilities) |  |  | 6,647 |
Retained earnings |  |  | 24,683 |

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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