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Investment in equity securities | 12 Months Ended
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Dec. 31, 2018
Investments, All Other Investments [Abstract] |
Investment in equity securities | Investment in equity securities On April 14, 2017, the Company entered into an agreement to make a minority equity investment in a social media analytics company (the “Investee”). Pursuant to this agreement, the Company invested $2.9 million and received 4.7 million shares of preferred stock, or approximately 15.0% of the total outstanding voting securities of the Investee. The Company’s investment is carried at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. The fair value of the shares of preferred stock of Investee, which is not publicly traded, is not readily determinable. There were no observable price changes or impairment indicators identified during the years ended December 31, 2018 and 2017.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
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