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v3.19.1

Financial Assets and Liabilities - SBI Investment (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Transfers of financial instruments between levels | $ 0 | $ 0
SBI |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Discount rate applied to cash flow forecasts to determine initial fair value of equity method investment. | 15.00% |
Market approach average price/earnings multiples of comparable companies to corroborate the income approach | 12.6 |
Time period of projected income to determine fair value of equity method investment | 5 years |

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