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Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring and Non-Recurring Basis (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
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Licensed Technology Net [Member] | Fair Value Measurements Nonrecurring [Member] |  |
Fair value disclosure of assets | $ 36,178,000 | $ 43,042,000
Fair value disclosure of gain loss | (367,000) |
Licensed Technology Net [Member] | Fair Value Measurements Recurring [Member] | Fair Value Inputs Level1 [Member] |  |
Fair value disclosure of assets |  |
Licensed Technology Net [Member] | Fair Value Measurements Recurring [Member] | Fair Value Inputs Level2 [Member] |  |
Fair value disclosure of assets |  |
Licensed Technology Net [Member] | Fair Value Measurements Recurring [Member] | Fair Value Inputs Level3 [Member] |  |
Fair value disclosure of assets | 36,178,000 | 43,042,000
Goodwill [Member] | Fair Value Measurements Nonrecurring [Member] |  |
Fair value disclosure of assets | 32,466,000 | 32,466,000
Fair value disclosure of gain loss |  |
Goodwill [Member] | Fair Value Measurements Nonrecurring [Member] | Fair Value Inputs Level1 [Member] |  |
Fair value disclosure of assets |  |
Goodwill [Member] | Fair Value Measurements Nonrecurring [Member] | Fair Value Inputs Level2 [Member] |  |
Fair value disclosure of assets |  |
Goodwill [Member] | Fair Value Measurements Nonrecurring [Member] | Fair Value Inputs Level3 [Member] |  |
Fair value disclosure of assets | $ 32,466,000 | 32,466,000
Short Term Investment [Member] | Fair Value Measurements Recurring [Member] |  |
Fair value disclosure of assets |  | 66,218,000
Fair value disclosure of gain loss |  |
Short Term Investment [Member] | Fair Value Measurements Recurring [Member] | Fair Value Inputs Level1 [Member] |  |
Fair value disclosure of assets |  |
Short Term Investment [Member] | Fair Value Measurements Recurring [Member] | Fair Value Inputs Level2 [Member] |  |
Fair value disclosure of assets |  | 66,218,000
Short Term Investment [Member] | Fair Value Measurements Recurring [Member] | Fair Value Inputs Level3 [Member] |  |
Fair value disclosure of assets |  |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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