Investments in Affiliates Accounted for Using the Equity Method (Investment in Lending Tree) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
Dec. 31, 2017 |
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| Schedule of Equity Method Investments [Line Items] | |||||
| Carrying amount | $ 121,880 | $ 121,880 | $ 114,655 | ||
| Share of earnings (losses) | $ 10,350 | $ 1,600 | $ 7,858 | $ 3,323 | |
| LendingTree | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Percentage ownership | 25.89% | 25.89% | |||
| Market value | $ 689,289 | $ 689,289 | |||
| Carrying amount | 116,554 | 116,554 | 114,655 | ||
| Share of earnings (losses) | 7,700 | $ 1,600 | 5,300 | $ 3,300 | |
| Other | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Carrying amount | $ 5,326 | $ 5,326 | $ 0 | ||
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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