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Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Schedule of Intangible Assets | The components of intangible assets were as follows:
|  | December 31, |
|  | 2018 |  |  | 2017 |
|  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |  |  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |
|  | (In thousands) |
Indefinite-lived intangible asset |  | $ | 45,275 |  |  | n/a |  |  | $ | 45,275 |  |  | $ | 45,275 |  |  | n/a |  |  | $ | 45,275 |
Amortizing intangible asset |  |  | 84,871 |  |  |  | (82,035 | ) |  |  | 2,836 |  |  |  | 84,871 |  |  |  | (78,633 | ) |  |  | 6,238 |
Total intangible assets |  | $ | 130,146 |  |  | $ | (82,035 | ) |  | $ | 48,111 |  |  | $ | 130,146 |  |  | $ | (78,633 | ) |  | $ | 51,513 |
Schedule of Assets Estimated Useful Life | Depreciation is recognized on a straight-line basis over the asset’s estimated useful life, which is estimated as follows:
|  | Estimated Useful Life
Data processing equipment and software |  | 3 to 7 years
Leasehold improvements |  | Lesser of 15 years or remaining life of lease
Furniture and other equipment |  | 5 to 15 years
Property, Plant and Equipment | Property and equipment balances were as follows:
|  | December 31, |
|  | 2018 |  |  | 2017 |
|  | (In thousands) |
Data processing equipment and software |  | $ | 68,447 |  |  | $ | 60,227 |
Leasehold improvements |  |  | 16,531 |  |  |  | 14,077 |
Other, principally furniture and other equipment |  |  | 26,586 |  |  |  | 24,839 |
|  |  | 111,564 |  |  |  | 99,143 |
Accumulated depreciation |  |  | (75,568 | ) |  |  | (71,044 | )
Net property and equipment |  | $ | 35,996 |  |  | $ | 28,099 |
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 |
Deferred income tax liabilities |  |  | 6,647 |
Retained earnings |  |  | 24,683 |

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